HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Dec 25, 2005, 11:27 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Build Log
Stevens Aero Edge 1.5

Merry Christmas everybody!
Ok Ok Bill didn't ask me to do this to his Edge design. But after the success of the Siamese CAP (http://www.rcgroups.com/forums/showthread.php?t=352940) and the only partial success of the Wild Hare Edge (http://www.rcgroups.com/forums/showthread.php?t=385681), I took it upon my self.
I know there is a market for 70-80" aerobatic planes. Look at all the places selling large numbers of ARFs that size.
One problem for most of us is the price. You'll need a large (~1.5-2kW) power system to haul those 12-15lb planes around. Here, as when we had only NiCads and NiMh cells with brushed motors, Bill's designs can shine. I think I can build a 75" edge that will weigh 7lb or so. It will have a much cheaper power system (and servos) than an equivalent ARF and should fly every bit as well as those overweight ARFs. Of course it will land much slower as a bonus. I hope this will be popular enough to get Bill's interest and he will make some money selling a few.
So Let's get started. My wonderful Wife gave me the SA Edge for Christmas. I decided to build both the 1.5 scale and the 1.0 scale together. Piece by piece. Here are the fin and rudder:
feathermerchant is offline Find More Posts by feathermerchant
Last edited by feathermerchant; Dec 26, 2005 at 12:13 AM.
Reply With Quote
Sign up now
to remove ads between posts
Old Dec 25, 2005, 11:56 PM
Dizzying Heights
SargeNZ's Avatar
New Zealand, Southland, Invercargill
Joined Feb 2003
1,063 Posts
I will be watching this with interest. Is it too early to tell whether scaled plans would be released for a fee?
SargeNZ is offline Find More Posts by SargeNZ
Reply With Quote
Old Dec 26, 2005, 12:12 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
I am just using my scanner to reprint and tile them at 150%. Time consuming but effective. It would help to get some legal size paper though. I have a buddy who is a lawyer.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Dec 26, 2005, 09:04 AM
Test your skills....fly IMAC!!
sun.flyer's Avatar
Swanton, Ohio
Joined Feb 2005
7,990 Posts
Awesome feather, this should be fun watching your plane(s) develop. Can I ask what power system you are thinking about using? I think you will probably be going with some combo of Tanic packs for the batteries.

Tim
sun.flyer is offline Find More Posts by sun.flyer
Reply With Quote
Old Dec 26, 2005, 09:14 AM
Plane dodger
KillerAir's Avatar
Stratford Sikorsky, Connecticut, United States
Joined Dec 2001
6,715 Posts
You are certainly more agressive than I. Wonderful idea Feather. I will stay tuned into this one. If you need any assistance with graphics or color don't hesitate to contact me.

Killer
KillerAir is offline Find More Posts by KillerAir
Reply With Quote
Old Dec 26, 2005, 09:27 AM
Registered User
Belfast / Dublin
Joined May 2004
1,554 Posts
can't wait for the flight report ... this is gripping stuff

big bird
big bird is offline Find More Posts by big bird
Reply With Quote
Old Dec 26, 2005, 09:30 AM
Registered User
JLSalas's Avatar
Santiago Pudahuel, Chile
Joined May 2003
1,286 Posts
interesting project!

JL
JLSalas is offline Find More Posts by JLSalas
Reply With Quote
Old Dec 26, 2005, 09:46 AM
Same Day Delivery
mike3976's Avatar
Economy, Pa.
Joined Mar 2002
3,448 Posts
What is the weight of the SA EDGE, 36 to 42 oz.? If so building one @ 1.5, you might come in at 54 to 63 oz. given the crude multiply by 1.5 approach. You might be able to pull this off a little lighter than seven lbs.
mike3976 is online now Find More Posts by mike3976
Reply With Quote
Old Dec 26, 2005, 09:50 AM
OZZIEJAP
Australia, VIC, Mount Waverley
Joined Sep 2004
188 Posts
Great work! Hope you don't get tired of cutting all those pieces out. I have been contemplating doing the same with my G-ride but to the same scale as Bill's 55" cap. (since I could use the same power setup etc) Good luck

Graeme
digigarb is offline Find More Posts by digigarb
Last edited by digigarb; Dec 26, 2005 at 10:03 AM. Reason: new image
Reply With Quote
Old Dec 26, 2005, 10:56 AM
blucor basher's Avatar
United States, PA, Lancaster
Joined Jun 2003
24,141 Posts
Let's hope this inspires SA to release this as kit. I would order one immediately.
blucor basher is offline Find More Posts by blucor basher
Site Sponsor
Reply With Quote
Old Dec 26, 2005, 12:45 PM
LJH
Moths do not fly inverted
LJH's Avatar
Greenwich CT.
Joined Sep 2000
4,191 Posts
Very Cool,
I have a deep burning desire to get into something larger then 48-50" span but the $$$ nesessary to get there puts a damper on the whole thing. But is Bill could comeup with something in the 65-75" span range that came out at 6-7lbs just think of the possibilites..... . Hey Bill....is it done yet . will be keeping an eye on this thread for sure.

Cheers,
Jim
LJH is offline Find More Posts by LJH
Reply With Quote
Old Dec 26, 2005, 01:00 PM
Registered User
jooNorway's Avatar
Norway
Joined Jul 2005
796 Posts
Is there any chance Stevens would produce a kit in this size??? 170cm VS SA-model is something I for sure would like to have in my hangar!!!
Bough myself a Cap232-40e for christmas-pleasure, almost ready to cover the beauty now. Then it is time to wait for release of the Ultimate from SA
jooNorway is offline Find More Posts by jooNorway
Reply With Quote
Old Dec 26, 2005, 01:22 PM
Scott Stoops
sukhoi26mx's Avatar
United States, CO, Longmont
Joined Mar 2002
8,411 Posts
Quote:
Originally Posted by mike3976
What is the weight of the SA EDGE, 36 to 42 oz.? If so building one @ 1.5, you might come in at 54 to 63 oz. given the crude multiply by 1.5 approach. You might be able to pull this off a little lighter than seven lbs.
Unfortuantely, for a pure scale-up, weight usually cubes as the size doubles... so I would guess that 7-8 pounds would be reasonable. For comparisons, my 30% (87") Yak weighs 16.5 lbs, so a 70" model at 8 lbs would be crazy light.

Scott
sukhoi26mx is offline Find More Posts by sukhoi26mx
Reply With Quote
Old Dec 26, 2005, 02:59 PM
Plane dodger
KillerAir's Avatar
Stratford Sikorsky, Connecticut, United States
Joined Dec 2001
6,715 Posts
I would think that 7lbs would be about right. What pack do you plan on powering this with, I would think around 800-900watts should do nicely given such a low wing loading.
Hey While your cutting out the larger one might as well do two and send one up here
I'll be more than happy to build it.

Killer
KillerAir is offline Find More Posts by KillerAir
Reply With Quote
Old Dec 26, 2005, 03:06 PM
Sink stinks
Montag DP's Avatar
United States, GA, Atlanta
Joined Apr 2005
4,523 Posts
Is the build going to be purely scaled up 1.5 times? Are you planning on adding to the frame to ensure rigidity? This should be interesting.

I was thinking about an Edge from Bill Stevens but then I got bit by the heli bug. (Watch out, helis are very addicting). I may still get one sometime if I ever have the money.
Montag DP is offline Find More Posts by Montag DP
Reply With Quote
Old Dec 26, 2005, 04:11 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
I knew it, I knew it....can't wait to see it.
Brycycles is offline Find More Posts by Brycycles
Reply With Quote
Old Dec 26, 2005, 05:10 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Ok Lots of comments - Great. I was hoping there would be some interest.
If I can get it to come out at 7lb than a 4130/16 (or Eflite 60) should be great. ~1,000W and should have unlimited vertical. As far as stiff, I'm trying to use the right balsa in the right places but I don't have near the experience that Bill has.
I do have a 1"X36" aluminum tube and phenolic sleeves from Gator RC.
That is the same size used in my 12lb Edge so it may be overkill but the phenolic sleeves should make it pretty stiff. I could go to 3/4" if 1" is too heavy.

Killer - I thought about cutting out 2 and sending you one. How about if I just mail you the bones and let you finish it? How about you take a week vacation during the long cold winter and visit us here is sunny Texas. It's 79 deg right now and has been sunny the past 2 days.

Bought $60 of balsa and ply today. Printing place was closed or I'd have gotten them to reprint the plans to 1.5X which would save me some time.
Maybe they'll be open Fri. Time to start cutting.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Dec 26, 2005, 05:34 PM
Smashes Things
RCTyp's Avatar
Montpelier, VA
Joined Feb 2005
2,400 Posts
Great stuff FM.

Are you attempting to scale thickness on the wood, I sure hope so (most likely a dumb question).

Good luck, can't wait to get the flight report.

Typ
RCTyp is offline Find More Posts by RCTyp
Reply With Quote
Old Dec 26, 2005, 05:43 PM
Real Men Fly Pink Planes...
kepople's Avatar
United States, TX, Rockwall
Joined Jun 2001
8,080 Posts
Feather;

I have been impressed with the Elite 60 outrunner on Davidsons UCD. Its lighter than this should come out, but on 6s its producing 1133 watts. For a $130 motor, and $236 batteries, (2 3s Tanic 3250's) you cant beat the cost of admission on it. Kelvin took some video of it today that should show what I mean.

Looking good. You should put your TX in a photo with those 2 rudders so everyone cans see how big we are really talking here.

Kirby
kepople is offline Find More Posts by kepople
Reply With Quote
Old Dec 26, 2005, 09:53 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
RCTyp - Yes, on most thicknesses I'm just adding a third.
1/16 becomes 3/32
1/8 becomes 3/16
3/32 becomes.....oh well.
Anyway it does not always work out so I err on the strong side to make sure. I think it will be plenty light but I do not want to have it break. There is a lot to this balsa selection stuff. Bill said once that he threw away 20% of the wood he got.

Kirby - That kind of power system is exactly what I'm thinking.

One thing I'm still wrestling with is servo size. I'm thinking standard servos could work (real cheep too) because of the light weight and I have HS-85's which could save almost 3oz. I also have some HS 5645's and they would certainly be overkill but weigh 2.1oz each. The Futaba 3102's are also good candidates. I know Kirby would like them.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Dec 26, 2005, 10:04 PM
Real Men Fly Pink Planes...
kepople's Avatar
United States, TX, Rockwall
Joined Jun 2001
8,080 Posts
3102's for certain on the ailerons, but I would feel better were I you, to have more gusto in the back. Maybe 5245 digitals. They are not too heavy and would give power, and precsion.

Standards may be tempting, but you sure will be putting a lot of work into this to risk a cheap servo. My guess is that like most stevens planes they fly fantastic, but they dont crash well.

Kirby
kepople is offline Find More Posts by kepople
Reply With Quote
Old Dec 26, 2005, 10:15 PM
Test your skills....fly IMAC!!
sun.flyer's Avatar
Swanton, Ohio
Joined Feb 2005
7,990 Posts
Quote:
Originally Posted by kepople
My guess is that like most stevens planes they fly fantastic, but they dont crash well.

Kirby
I don't know of many planes that do crash well. My DuraPlane was always good at crashing and flying again.

Tim
sun.flyer is offline Find More Posts by sun.flyer
Reply With Quote
Old Dec 26, 2005, 10:37 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
5245's are torquey little devils. Might have to beef up the joining wire on the elevators. MAL has 1/4" music wire....
Just trying to avoid spending another $200 or so for servos.
Haven't crashed too many times lately. Must try harder.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Dec 26, 2005, 10:47 PM
BOSS
j_z_123's Avatar
New Jersey (excl EWR), United States
Joined Apr 2002
4,984 Posts
I can't wait to see the finished product
j_z_123 is offline Find More Posts by j_z_123
Reply With Quote
Old Dec 26, 2005, 10:56 PM
Plane dodger
KillerAir's Avatar
Stratford Sikorsky, Connecticut, United States
Joined Dec 2001
6,715 Posts
Feather, I think I may take you up on that offer, If your cutting out the bones I'll build it. As for a vacation in Texas...sounds good to me. Would love to come down and heat up my bones. This NE weather is just getting old to me.

Killer
KillerAir is offline Find More Posts by KillerAir
Reply With Quote
Old Dec 27, 2005, 08:35 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Was kidding about sending bones to you but was not kidding about the invitation.
I have some "Killer" finishing ideas and will get with you when I'm a little further along.

I'll need to make a cowl and canopy. Ideas?
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Dec 27, 2005, 08:41 AM
Plane dodger
KillerAir's Avatar
Stratford Sikorsky, Connecticut, United States
Joined Dec 2001
6,715 Posts
Drats! Canopy...2 liter bottle will be almost the right shape. cowl? Fiberglass premade maybe. How about Blue foam plug to shape, fiberglass and melt out foam, lost foam method.
Let me know about the finishing, happy to help.

Killer
KillerAir is offline Find More Posts by KillerAir
Reply With Quote
Old Dec 27, 2005, 09:49 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Thought about the 2 liter bottle for canopy. Don't know nuts about molding though.
Would be great if there was a pre made cowl. Maybe start with a large balsa block...

BTW the difference in weight of the finished pieces so far is double.
If we use Scott's formula for cubing the scale to calculate the weight difference then for a 30oz plane scaled by 1.5:
1.5 X 1.5 X 1.5 X 30oz = 101.25oz = 6.3lb
feathermerchant is offline Find More Posts by feathermerchant
Last edited by feathermerchant; Dec 27, 2005 at 10:17 AM.
Reply With Quote
Old Dec 27, 2005, 11:29 AM
E-Flight Addict
ronin8451's Avatar
Weatherford, Tx.
Joined Oct 2003
1,329 Posts
Feather,
I have an old .60 sized Edge cowl laying around the back of the shop somewhere. If I can find it, it's yours. The next time I see Kirby or Ronnie, I'll give it to one of them to see if it will work for ya !

Rick
ronin8451 is offline Find More Posts by ronin8451
Reply With Quote
Old Dec 27, 2005, 11:47 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
WooHoo! Thanks already.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Dec 28, 2005, 10:15 AM
E-Flight Addict
ronin8451's Avatar
Weatherford, Tx.
Joined Oct 2003
1,329 Posts
Here's the cowl, shouldn't be too many unwanted holes cause the guy did not know about cutting the exit area out at the bottom for cooling , which is why he dead-sticked the plane after the OS .61FX overheated !
Katana, my little Pit, even sniffed it and declared it a good cowl ! LOL !

Rick
ronin8451 is offline Find More Posts by ronin8451
Last edited by ronin8451; Dec 28, 2005 at 10:17 AM. Reason: forgot the picture ! DUH !
Reply With Quote
Old Dec 28, 2005, 11:25 AM
Registered User
Mike Hall's Avatar
Albany, GA
Joined Jun 2002
2,356 Posts
My 25% edge is 10lbs. I was shooting for 8-9lbs but unless its just a huge parkflyer then it will be hard to hit that weight. My edge could have been in the mid 9lb range but my cowl ended up being over 10oz. I had no idea how much glass to lay up in the mold. LOL Anyhow Build it like a parkflyer and 7-8lbs should be easy.

Mike
Mike Hall is offline Find More Posts by Mike Hall
Reply With Quote
Old Dec 28, 2005, 02:09 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Hey Mike - Good to hear from you. Got some pics of the huge Edge? Any specs?

Will you make it to SEFF? Hope to see you there.
One more - Did you sell your big Pitts design to Bill?
That's one beautiful plane. Brycycles here wants a bipe so bad, he's making one from leftover Groove parts.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Dec 28, 2005, 08:14 PM
High Roller designer
Impact's Avatar
Londonderry NH
Joined Mar 2005
1,414 Posts
Looks like a great project I can't wait to see the finished product. I'm sure you know this but I think the plan for the edge is only 80% to scale. I hope that doesn't throw the monkey wrench into the plan...Impact
Impact is offline Find More Posts by Impact
Reply With Quote
Old Dec 28, 2005, 10:21 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Woo you scared me there for a minute. The side view of the fuselage assembly is 80% but the fuse parts above are scale as well as the tailfeathers layout. They are many parts however that are not on the plans. Coincidentally I went by the printer today and copied and printed the un removed parts at 150%. Some of the parts ended up split up on 2 sheets and I'll have to join sheets to have a pattern. Hope you feel guilty Bill.
Also bought 4 HS-635 servos. They were only $28 each and have 69ozin torque at 4.8V. Supposed to be good for planes up to 12lb.
Have framed the stab and one evevator complete, other elevator needs cross bracing.
Edge 1.0 stab and elevator are complete (~30min). Will post pics when I can.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Dec 29, 2005, 12:25 AM
High Roller designer
Impact's Avatar
Londonderry NH
Joined Mar 2005
1,414 Posts
Great I'm glad it wasn't a problem...Impact
Impact is offline Find More Posts by Impact
Reply With Quote
Old Dec 29, 2005, 08:13 AM
Forgot how to fly
Mike Parsons's Avatar
Atlanta, Georgia
Joined Oct 2002
10,177 Posts
Quote:
Originally Posted by feathermerchant
Hey Mike - Good to hear from you. Got some pics of the huge Edge? Any specs?

Will you make it to SEFF? Hope to see you there.
One more - Did you sell your big Pitts design to Bill?
That's one beautiful plane. Brycycles here wants a bipe so bad, he's making one from leftover Groove parts.
It is sweet. I still cant talk Mike into selling it to me LOL
Mike Parsons is offline Find More Posts by Mike Parsons
Reply With Quote
Old Dec 29, 2005, 08:43 AM
Plane dodger
KillerAir's Avatar
Stratford Sikorsky, Connecticut, United States
Joined Dec 2001
6,715 Posts
Sweet Edge!
KillerAir is offline Find More Posts by KillerAir
Reply With Quote
Old Dec 29, 2005, 09:05 AM
Test your skills....fly IMAC!!
sun.flyer's Avatar
Swanton, Ohio
Joined Feb 2005
7,990 Posts
Quote:
Originally Posted by KillerAir
Sweet Edge!
Double the Sweet. Mike what is the power system your running in your edge?

Tim
sun.flyer is offline Find More Posts by sun.flyer
Reply With Quote
Old Dec 29, 2005, 09:23 AM
Forgot how to fly
Mike Parsons's Avatar
Atlanta, Georgia
Joined Oct 2002
10,177 Posts
C50 12XL, Jeti 77, 8S2P TP PL.

-Mike
Mike Parsons is offline Find More Posts by Mike Parsons
Reply With Quote
Old Dec 29, 2005, 10:47 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Is that Mike Parson's or Mike Hall's?
Too many Mikes.
Any plans?
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Dec 29, 2005, 11:42 AM
Forgot how to fly
Mike Parsons's Avatar
Atlanta, Georgia
Joined Oct 2002
10,177 Posts
Sorry Feather, I didnt mean to hijack your thread . It is Mike Hall's I just happen to know more than I should . Those are photo's I took at SEFF last year.

-Mike
Mike Parsons is offline Find More Posts by Mike Parsons
Reply With Quote
Old Dec 29, 2005, 01:15 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Feather,

I read that sometimes the copiers need to be adjusted to get a correct 150% blow-up. Try putting a 1 x1 inch square on the corners. After the image size is increased to 150%, the square should measure 1.5 x 1.5. Just something that I read.
I started the Boove last night. Decided use the kit, stretch the fuse an inch to, o degree upper wing, and raise the side-profile 1/2 inch...."What the heck" is its new name.
Bryce
Brycycles is offline Find More Posts by Brycycles
Reply With Quote
Old Dec 29, 2005, 02:13 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
I asked her that exact question as I was copying parts. She said that it made 1:1 copies. Maybe I'll get past the tailfeathers tonight. At least post some pics.

OK here is a pic for comparison with Tx for scale. 1.5 scale Fin and rudder came out pretty light 20g vs 9 for the 1.0
Stab and elevator not so good. 51g vs 11g
I used some really hard wood to make it stiff and strong buy from here on out I'll layoff fthe heavy stuff.
Other notes:
I have a 1" Al wing tube with Phenolic sleeve from GatorRC. It's light and strong but much larger than the scaled up tube (~1/2"). It won't clear the battery tray but it does clear everything in the wing. I've decided to move the tray down by 1 thickness (3/16") to make it clear. I'll only have to make a few other changes. Sitll be plenty of room for batteries. The firewall is 7" by 8". The servo holes in the aft end of the fuse scaled up to almost exactly the size I need. The 1" tube is what was in my 12lb Edge so it will definitely be strong enough.
feathermerchant is offline Find More Posts by feathermerchant
Last edited by feathermerchant; Dec 29, 2005 at 11:00 PM.
Reply With Quote
Old Jan 02, 2006, 01:57 PM
High Roller designer
Impact's Avatar
Londonderry NH
Joined Mar 2005
1,414 Posts
Anything new?....Impact
Impact is offline Find More Posts by Impact
Reply With Quote
Old Jan 02, 2006, 05:41 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
I've been cutting and cutting and fitting. I've gone to 2 places looking for wood. It's getting hard to find good balsa like Bill uses. I've cut the firewall and battery tray out of 3/16 birch. Really stiff but really heavy. May scrap it. Have cut out the sides and made the carry thru hole for the wing tube. Took a long time to make sure it was in the right place. Also had to cut stab slot and make cutouts for servos. Have cut out F4 and th epattern for FB 1&2. As I said above I have to join sheets to make some patterns. Aligning the patterns and then using them to cut out parts is time consuming. I hope next pics will have some fuse assembly.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 02, 2006, 06:06 PM
Test your skills....fly IMAC!!
sun.flyer's Avatar
Swanton, Ohio
Joined Feb 2005
7,990 Posts
Looking forward to the fuse pics. Any new progress with the SA edge FM?

Tim
sun.flyer is offline Find More Posts by sun.flyer
Reply With Quote
Old Jan 02, 2006, 10:36 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
As stated above I'm building them in parallel. Sometimes the parts don't fit so well. LOL
Anyway it helps to have the miniature one to see how everything goes together and where I can make shortcuts. Like leaving off those darned tabs.
Fit up fuse sides, battery tray and firewall tonight. Marked additional lightening holes to cut in firewall and battery tray. Also cut bottom and checked it for overall dimensions. Next are the rails that run along the bottom and the hatch. The copies of the parts enlarged by 1.5 seem really accurate even after I cut them out, tape them together and use them for patterns to cut out balsa. The plans sheet does not seem as accurate. If I use parts from it they will be off.
Oh and my printer quit. Power supply went out. It's a little switcher that snaps into the bottom of the printer. Fuse is good but output voltages are way off. Checked a few components but all were OK. Wish it were a Castle. I'll call Canon parts tomorrow. It is less than a yaer old so under factory warranty but I'd have to send the whole thing back.
feathermerchant is offline Find More Posts by feathermerchant
Last edited by feathermerchant; Jan 04, 2006 at 08:43 AM.
Reply With Quote
Old Jan 05, 2006, 10:53 AM
Glow Free Since Aug, 2005
tommy321's Avatar
Ottawa, Ontario, Canada
Joined Aug 2004
1,258 Posts
Just thought of something... maybe we should call this plane:

Stevens Aero Edge 810

(540*1.5=810)

Tom
tommy321 is offline Find More Posts by tommy321
Reply With Quote
Old Jan 05, 2006, 11:12 AM
E-Flight Addict
ronin8451's Avatar
Weatherford, Tx.
Joined Oct 2003
1,329 Posts
James,
Sent your cowling with Ronnie last Saturday. I hope it is close enough to fit for you ! Looking forward to see this puppy work out cause I want one too and don't mind scratching it up either !

Rick
ronin8451 is offline Find More Posts by ronin8451
Reply With Quote
Old Jan 05, 2006, 12:12 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
I hope to pick it up Sat at the field. Thanks again. If it's not close I'll try the Wildhare cowl and canopy. A balsa cowl would be really light.
I need more balsa but cannot get a hold of Lonestar. The phones seem to be out for the past 2 days. Strange. New printer (warranty) should be here today. Thanks Canon!
Between watching football, I've finished the fuse bottoms on both with hatches. I need to fit the 1.5 to the firewall. The 1.0 fits like a glove of course. I still need to make 3 fuse formers then I can see how it fits together. I still need to cut out more lightening holes in the firewall and battery tray. Anybody know where the CG is without wings? I'd like to mock up my servos and motor in the fuse and see if I can leave the servos in the tail or move them up and go pull-pull. I also need to bend the 5/32" gear wires.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 05, 2006, 01:26 PM
E-Flight Addict
ronin8451's Avatar
Weatherford, Tx.
Joined Oct 2003
1,329 Posts
Whenever I can't get hold of Mr. Wooten @ Lonestar Balsa, I just run over to a Hobby Lobby . They usually have a decent rack of Midwest Balsa. I know the one over on Rufe Snow has it, but the big one on South Cooper even has some contest grade.

Rick
ronin8451 is offline Find More Posts by ronin8451
Reply With Quote
Old Jan 05, 2006, 02:15 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Wow. Didn't know that. He finally emailed me back that they have lost power to their building and expect it back on sometime today. I already ordered from BalsaUSA so we'll see if I need any more. I am concerned about wrapping the 1/16 sheet around the turtle deck. I could probably use 1/32. The stuff at the LHS is pretty heavy and high $. No offense to them, that's just how it is.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 07, 2006, 07:36 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Ronin - got the cowl and it looks great. It is just the right width but is too short because it does not extend downward enough to cover that trapazoidal bottom the Edge has. Maybe that ARF had a flat bottom to the fuselage. I think it will help me to make a plug or make a balsa cowl though.
I have trial fit the formers, sides and bottom of the fuselage. I've also bent the gear out of 5/32". (That was pretty difficult.) I measured and I'd have room for a 22" prop so I shortened the gear legs by 2" each. I'm concerned that the gear legs will not be strong enough so the grooves in the firewall are 3/8 just in case. I'll probably mount the gear wires in Gorilla glue instead of epoxy until I've had a few flights.
I drilled the firewall for #6 screws and installed the top 2 blind nuts. I epoxied the 1/8 ply doubler to the rear of the firewall and I'm waiting for it to setup so I can drill and install the other 2 blind nuts.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 07, 2006, 08:08 PM
Registered User
The Other Dave's Avatar
Colorado Front Range, USA, EARTH, Sol system, Milkyway Galaxy
Joined Nov 2001
2,356 Posts
Quote:
Originally Posted by ronin8451
Whenever I can't get hold of Mr. Wooten @ Lonestar Balsa, I just run over to a Hobby Lobby . They usually have a decent rack of Midwest Balsa. I know the one over on Rufe Snow has it, but the big one on South Cooper even has some contest grade.

Rick
Holy moly the Hobby Town near me has balsa somwhat resembling
oak or maybe Maple.

The Hobby Lobby is even worse.
The Other Dave is offline Find More Posts by The Other Dave
Reply With Quote
Old Jan 08, 2006, 12:44 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Some progress

Got the basic fuselage built. Sorry for the green pics. The camera was on night shot somehow. Fuse weights so far are 12.4 and 3.2
At that rate the plane will come out at 7.25lb
About the only thing that is really overweight is the firewall and battery tray. I made them out of 3/16 birch ply. I could save about 2oz by making them out of 1/8 but the gear legs would not fit (5/32).
Instead of tabs which are a real hassle for me to cut correctly, I glued some 1/8 sq pieces on the bottom so the sides would line up. I used Gorilla glue to glue the firewall and sides to the battery tray. I left some areas along the battery tray free of gorilla glue so that I could CA them to hold everything together while the gorilla dried.
I used blue masking tape to hold the corners together then once everything was lined up and with the fuse sitting flat on the bench, I CA's my way back.

Need to add wing carrythru, angle braces, F2, stab support, and upper stringers then sheet.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 08, 2006, 01:03 AM
Registered User
Germany
Joined Jul 2003
899 Posts
very interesting.
G.Hanssmann is offline Find More Posts by G.Hanssmann
Reply With Quote
Old Jan 08, 2006, 02:04 AM
Test your skills....fly IMAC!!
sun.flyer's Avatar
Swanton, Ohio
Joined Feb 2005
7,990 Posts
Nice work FM, looking very good. Thanks for the photos, was wondering what things were looking like.:P

Tim
sun.flyer is offline Find More Posts by sun.flyer
Reply With Quote
Old Jan 09, 2006, 07:37 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
More progress

Here's the wing tube carry thru. That is a 1" aluminum tube through the phenolic sleeve. The tube is installed to make sure the sleeve stays round while the glue dries. I've also added some reinforcement behind the firewall to brace the gear legs. If you've seen me land you know why.
To make the glue joints on this post I applied a little water and Gorilla glue to most of the surface then while holding the part in place I CA'd the part to hold it tight until the Gorilla dries. The trick is NOT to allow Gorilla into the sleeve or you'll be figuring out how to get the aluminum tube out for the next year or so. The glue foamed up all around the outside of the tube and I just kept wiping up the excess. I left the tube a little long so the glue would not get into it. I'll cut/sand it down later.
feathermerchant is offline Find More Posts by feathermerchant
Last edited by feathermerchant; Jan 09, 2006 at 07:52 PM.
Reply With Quote
Old Jan 09, 2006, 11:22 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
In the mean time

Did not think I would get this far tonight but I've lashed the wing tube to the battery tray with 50lb fiber fishing line. This just ties the tray to the tube so it can carry the aircraft weight. The aluminum tube is stiff enough on its own so that It doesn't need the carrythrough structure of the 1.0 Edge.
The 1/8" ply on the inside is also to transfer load to the wings.
I'll wrap the battery velcro strap up around the tube too so it can transfer the battery weight right to the wing tube. That assumes I'll have to strap the battery at that location.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 10, 2006, 05:02 AM
Registered User
Belfast / Dublin
Joined May 2004
1,554 Posts
that's an impressive beast, can't wait to see it get sky-born

big bird
big bird is offline Find More Posts by big bird
Reply With Quote
Old Jan 10, 2006, 12:15 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Nice Feather! Keep it up!
Brycycles is offline Find More Posts by Brycycles
Reply With Quote
Old Jan 10, 2006, 02:06 PM
Registered Snoozer
Neil Morse's Avatar
San Francisco, CA, USA
Joined Jul 1999
6,123 Posts
Great work, FM. I can't decide which "enlarged" model I want more, your 1.5 Extra or Ed's Jelly Bean XL. This is a great concept.

Neil
Neil Morse is offline Find More Posts by Neil Morse
Reply With Quote
Old Jan 10, 2006, 02:49 PM
Plane dodger
KillerAir's Avatar
Stratford Sikorsky, Connecticut, United States
Joined Dec 2001
6,715 Posts
Looks Great FM! Man you got some lumber going on there. Much bigger than I thought it would be. Keep it up!

Killer
KillerAir is offline Find More Posts by KillerAir
Reply With Quote
Old Jan 11, 2006, 11:28 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Killer - Trust me it's all 1.5 The bare fuse is right at 44" It's hard to lose.
Turtledeck(s)
Pics from last night and tonight - I fit the first side to the longeron and glued it down. It did not want to curve over the top so I wetted (water) it and strapped it down with those handy paper strips (have lots of extra paper). The ends of the strips are taped to dry balsa as masking tape won't stick to wet. Figured that out all by myself. I did not glue it down yet. Guess how I learned that?
I let the first side dry 24 hrs and it did shrink a little and warp a little. It was made from 2 separae 3" sheets as I had no 6" at the time. I did not match the pieces well so one is stiffer than the other. Then I CA'd it in place.
Today I got my order of balsa from Balsa USA. I asked for them to pick the lightest they could find. That cost a little more but it's worth it to get the best balsa you can find. It all looks really good and the price was right.
The second side was cut from a 1/16X6X36 sheet that weighed 0.7oz.
It was able to follow the curve of the turtledeck dry and is less bumpy.

The shots from above reveal that the grain on the left and right sides runs different. For both planes! As I was cutting the second side the best wood for curving caused me to line up the grain with the upper keel. After I made my first cut, my heart sank as I realized that the piece already on the plane had the grain lined up with the longeron. So I looked at the 1.0 and and Bill's laser cut sheets are different just like I was doing for the 1.5. I looked at my patterns copied (copier) from the parts and sure enough the way he cuts them out, one has the grain along the keel and one along the longeron. Running the grain along the keel should make it easier to install.

Anyway I'll sheet the forward part of the fuse tomorrow. Then it's on to sanding and filling. BTW This thing is really stiff already.

I have found that the Wildhare Edge 540T canopy will fit. So I've ordered one. It is elongated (540T - two seat) but I think I can cut it down. The cowl is about the right width but too short. By about an inch. I'm still looking. I may have to make a custom balsa cowl. It could be real streamlined like for a turbine engine and use an annular air intake.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 12, 2006, 12:02 AM
High Roller designer
Impact's Avatar
Londonderry NH
Joined Mar 2005
1,414 Posts
I found a neat trick with sheeting, Stick packing tape to the balsa then do your sheeting and pull off the tape. The tape on the outside holds the balsa and forces the inside to squish rather than crack on the outside. My first test peice I wraped around a spray paint can and made a wood tube.....Impact
Impact is offline Find More Posts by Impact
Reply With Quote
Old Jan 12, 2006, 08:09 AM
Registered User
mexico's Avatar
NJ
Joined Aug 2003
8,892 Posts
Holy...the rudder/stab is HUGE! The tail looks to be 3.5
mexico is offline Find More Posts by mexico
Reply With Quote
Old Jan 12, 2006, 08:35 AM
Glow Free Since Aug, 2005
tommy321's Avatar
Ottawa, Ontario, Canada
Joined Aug 2004
1,258 Posts
That thing is dead SEXY... When I first saw this thread, I thought you were NUTS!... I still think you're nuts, but my respect for ya grows daily I have to try this sometime.

How floppy are the tail feathers? I assume you picked some stiff balsa. Does it feel like you'll need the covering to stiffen them up?

Tom
tommy321 is offline Find More Posts by tommy321
Reply With Quote
Old Jan 12, 2006, 08:51 AM
Plane dodger
KillerAir's Avatar
Stratford Sikorsky, Connecticut, United States
Joined Dec 2001
6,715 Posts
This Edge is awsome. Hey can I have the first ride?

Killer
KillerAir is offline Find More Posts by KillerAir
Reply With Quote
Old Jan 12, 2006, 09:01 AM
Recruiter - 60 Amp Club
Ed Lyerly's Avatar
Rutherfordton, North Carolina, United States
Joined Apr 2001
5,941 Posts
FM,
Teriffic job so far . I can't wait to see your new Edge 1.5 at SEFF this year!!
1st the Siamese CAP .....now the Edge 1.5 .....
"You 'Da Man".
Ed
Ed Lyerly is offline Find More Posts by Ed Lyerly
Reply With Quote
Old Jan 12, 2006, 09:53 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Thanks for the comments all. The fin seems pretty stiff outside the airframe but once it's slid into that pocket it's really stiff. The rudder has a really hard piece along the bottom where the control horn goes. That piece has to push the rest around so it needs to be stiff. The stab came out too heavy IMO. The piece I used for the big LE part is like oak. It is stiff though and will only get stiffer when mounted in the fuse.
The whole fuse is really stiff too.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 12, 2006, 09:56 AM
Real Men Fly Pink Planes...
kepople's Avatar
United States, TX, Rockwall
Joined Jun 2001
8,080 Posts
Now thats a rudder!!!

Kirby
kepople is offline Find More Posts by kepople
Reply With Quote
Old Jan 12, 2006, 11:44 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Front sheeting is installed. Turns out the sheet I used was ~3/64.
Noticed that after I had it on. So it is really thin. Anyway fuse weight is now 15.8 compared rto 4.2 Ack!
I've secretly budgeted 2lb for the fuse structure complete and covered but without power and radio. Might make it. Not too happy with the amount of CA all over the sheet.
Did some drawing and mockup of a cowl design with motor and spinner. The spinner is set a little more than 8" from the firewall. This is probably going to be the hardest part. I do think I can use the scaled up motor mount with some minor modifications.
I'm thinking carved or builtup balsa cowl at this point.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 13, 2006, 07:56 AM
Registered User
mexico's Avatar
NJ
Joined Aug 2003
8,892 Posts
Do you think the cowl from SA's big Cap might work?
mexico is offline Find More Posts by mexico
Reply With Quote
Old Jan 13, 2006, 08:31 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Mexico - The big CAP is 55" so it's not much bigger than the SA Edge.
The firewall on the 1.5 measures ~7.5"W by ~8" tall. The spinner backplate will be ~8.5" in front of the firewall.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 13, 2006, 08:43 AM
Registered User
mexico's Avatar
NJ
Joined Aug 2003
8,892 Posts
The span may not be that much bigger but I remember when I used to see Doc e fly his Cap40 my impression always was that the fuselage was MUCH wider and more massive than the Groove. It must have been deceiving. The shape of the cowl gives a larger apearance.
mexico is offline Find More Posts by mexico
Reply With Quote
Old Jan 13, 2006, 11:42 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
I'll measure it tonight but I'm pretty sure the CAP is a lot smaller.
Makes me wonder though if I could cut up a CAP cowl like 4 ways or something and make it larger....
Wait! it comes in 2 pieces. Half the work is already done.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 13, 2006, 11:59 AM
E-Flight Addict
ronin8451's Avatar
Weatherford, Tx.
Joined Oct 2003
1,329 Posts
Yeah, but the Cap cowl has the rocker cover bulges sticking out the side ( which makes it a trademark Cap cowl) and the edge doesn't have that . Notice the pics below.
ronin8451 is offline Find More Posts by ronin8451
Reply With Quote
Old Jan 13, 2006, 12:20 PM
Glow Free Since Aug, 2005
tommy321's Avatar
Ottawa, Ontario, Canada
Joined Aug 2004
1,258 Posts
Quote:
Originally Posted by ronin8451
Yeah, but the Cap cowl has the rocker cover bulges sticking out the side ( which makes it a trademark Cap cowl) and the edge doesn't have that...
You're telling the guy who has a twin tail CAP that the cowl bulges won't be scale???

Tom
tommy321 is offline Find More Posts by tommy321
Reply With Quote
Old Jan 14, 2006, 05:14 PM
Registered User
Dennis C's Avatar
Grass Valley California
Joined Jun 2004
2,469 Posts
have you ever tried foam covered with glass cloth?

white foam sanded to shape coverd with glass cloth and epoxy resin, stick it into a balloon. then melt/sand the foam out. works well for a one off. a couple of layers of 1.5oz glass cloth should work. use laminating resin, the hard part is finding a big balloon

Dennis
Dennis C is offline Find More Posts by Dennis C
Reply With Quote
Old Jan 14, 2006, 06:39 PM
Recruiter - 60 Amp Club
Ed Lyerly's Avatar
Rutherfordton, North Carolina, United States
Joined Apr 2001
5,941 Posts
Or ....you could use blue foam (sands to a smoother surface) and an old pair of panty hose (instead of the baloon) .
Ed
Ed Lyerly is offline Find More Posts by Ed Lyerly
Reply With Quote
Old Jan 14, 2006, 06:44 PM
Scott Stoops
sukhoi26mx's Avatar
United States, CO, Longmont
Joined Mar 2002
8,411 Posts
Quote:
Originally Posted by Ed Lyerly
and an old pair of panty hose (instead of the baloon) .
Ed
Ed - I'm seeing a whole new side of you!

Scott
sukhoi26mx is offline Find More Posts by sukhoi26mx
Reply With Quote
Old Jan 14, 2006, 07:25 PM
WAA-08 Survivor
Griffin's Avatar
Joined May 2004
2,644 Posts
Ah, the dreaded cowl. I did a lot of reading on the subject and found what I think is good advice on fiberglass methods--use the green foam for flower arrangements for the mold. Today I stole some from the wife and indeed, it carves, sands and handles like a dream. Now, if I could only awake my somewhat dormant right brain and carve something that doesn't look like it came out of a cow... -Steve
Griffin is offline Find More Posts by Griffin
Reply With Quote
Old Jan 15, 2006, 06:28 AM
Registered User
Belfast / Dublin
Joined May 2004
1,554 Posts
that rudder is a 36 DD

big bird
big bird is offline Find More Posts by big bird
Reply With Quote
Old Jan 15, 2006, 10:59 PM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
What have I been doing?

Thanks for the cowl help guys. I'm still thinking carved balsa cowl. Anyway before you can make a cowl you have to know where the motor is going to end up. I scaled the mount and drew a scale side view of the 4130 and all I had to do was move the motor mounting plate back 1/4" or so to get the correct spinner to firewall dimension - 9-15/16" OK about 10"
I put a small amount of right thrust in the plate and offset the base of the motor 1/16" to the left. The mount is all 1/8" like the 1.0 but is not light ply so it's much stronger. I figured I'd need it with that 13oz motor hanging out there. It weighs 5.4oz (I was guseeing it would be 5 or so) which is not bad but the 1.0 mount weighs 1.2oz. It's looking more like 8lb all the time. I should weigh one of my aluminum mounts for comparison. BTW that is a 3" spinner.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 15, 2006, 11:44 PM
Real Men Fly Pink Planes...
kepople's Avatar
United States, TX, Rockwall
Joined Jun 2001
8,080 Posts
impressive. I like the daddy, baby pix!

Kirby
kepople is offline Find More Posts by kepople
Reply With Quote
Old Jan 16, 2006, 06:49 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Knew you would Kirb.
Before gluing the mount together, I'll bolt the motor to it and install on the fuse to see if the cowl I'm planning will clear the mount. I think it will interfere along the sides. If so, I think I can narrow the motor mounting plate and angle the side pieces in. I can also shorten them a bit. Here is what I'm talking about:
feathermerchant is offline Find More Posts by feathermerchant
Last edited by feathermerchant; Jan 16, 2006 at 06:56 AM.
Reply With Quote
Old Jan 16, 2006, 09:01 AM
Registered User
mexico's Avatar
NJ
Joined Aug 2003
8,892 Posts
Really nicely done. What did you use to cut out the lightening holes in the motor mount parts so cleanly? Looks as good as a laser.Did you say it was solid stock and not ply? If so, should the grain on the top of the motor mount be running left right in that last picture?
mexico is offline Find More Posts by mexico
Reply With Quote
Old Jan 16, 2006, 10:12 AM
Smashes Things
RCTyp's Avatar
Montpelier, VA
Joined Feb 2005
2,400 Posts
Quote:
Originally Posted by mexico
Really nicely done. What did you use to cut out the lightening holes in the motor mount parts so cleanly? Looks as good as a laser.Did you say it was solid stock and not ply? If so, should the grain on the top of the motor mount be running left right in that last picture?
Ya, me too. Looking for a little wood wisdom here.

I believe you said that you are not using light ply, therefore you are using solid as Mex said or Heavy ply? Would ply not always be stronger than solid stock?

Typ
RCTyp is offline Find More Posts by RCTyp
Reply With Quote
Old Jan 16, 2006, 10:19 AM
Bob S
ki0qm's Avatar
Austin Tx
Joined Dec 2004
291 Posts
It looks like ply to me. It just isn't Lite-ply as in the kit.
ki0qm is offline Find More Posts by ki0qm
Reply With Quote
Old Jan 16, 2006, 10:37 AM
Registered User
mexico's Avatar
NJ
Joined Aug 2003
8,892 Posts
I think you are correct. I zoomed in on the image and it appears to be ply. Grain doesn't matter.

This is going to be one exciting maiden. If you end up making another motor mount you could use the one in the post as a lifeguard stand. It's pretty huge.
mexico is offline Find More Posts by mexico
Reply With Quote
Old Jan 16, 2006, 11:34 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
Sorry I wasn't more clear. the SA 1.0 kit uses 1/8" light ply for the mount. I am using 1/8" 5ply birch so the grain doesn't matter. All that you see is cut out with my Craftsman jig saw. I'm getting real good with it by now. I'll post a pic of it with the next round. It should get some credit. The 3/16" firewall and battery tray were much harder (50%) to cut than the 1/8".
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 18, 2006, 07:11 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
OK the CAP cowl is definitely too small.
Ed- Any details on the pantyhose method?
The mount was narrowed sort of like in the pic above. Worked well and it is glued up.
Started the balsa plank cowl last night and I think it is going to look awful. I should finish it anyway just to learn (what not to do) and who knows it might be salvageable.
I used the front of the fuse as a template (drew around it) to cut out a piece of 1/8" light ply to serve as the cowl back. Then from a paper pattern, I transferred the motor mount mounting holes to it for indexing. Next I stacked the cowl back and the motor mount onto the front of the fuse and put in the mounting screws to hold everything in alignment. I drew around the base of the motor mount and cut that part out of the cowl back. I put 2 #6-32 blind nuts on the cowl back then drilled 2 corresponding holes thru the 3/16" firewall into the battery box. Now I can secure the cowl with 2 nylon #6-32 thumbscrews from inside the battery box.
The piece I cut out of the cowl back was used to make a spinner ring. I drew concentric circles of several diameters from 2-1/2" to 3-1/2" and drilled the center for the motor shaft. I have put the motor on the mount and the mount on the fuse. Then with the cowl back and spinner ring in place, I just have to fill in the gap between the 2 with balsa. Simple.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 18, 2006, 07:51 AM
Recruiter - 60 Amp Club
Ed Lyerly's Avatar
Rutherfordton, North Carolina, United States
Joined Apr 2001
5,941 Posts
Quote:
Originally Posted by feathermerchant
OK the CAP cowl is definitely too small.
Ed- Any details on the pantyhose method?
FM,
See post #19 thru #24:
http://www.rcgroups.com/forums/showt...9&page=2&pp=15
I would just use blue foam. Carve and sand to shape, then use epoxy layered fiberglass, followed by stretching the panty hose over that. Then just dig out the blue foam after the epoxy hardens.
Ed
Ed Lyerly is offline Find More Posts by Ed Lyerly
Last edited by Ed Lyerly; Jan 18, 2006 at 07:56 AM.
Reply With Quote
Old Jan 18, 2006, 10:16 PM
TKG
Registered User
Riverton Wy
Joined Apr 2003
342 Posts
You use foam planks the same way you did with the wood. Only start with 1" thick.
Just sand away anything that dont look like a cowl. Remember the foam is only used to mold the real cowl. Gas work real good when you have to remove the foam form the glass.
TKG is offline Find More Posts by TKG
Reply With Quote
Old Jan 19, 2006, 01:47 AM
Registered User
ViktorF's Avatar
Krasnodar, RUSSIA
Joined Nov 2004
1,027 Posts
feathermerchant
You have started the heaviest work.
I 2 months am tormented with plug.
I wish you success!
ViktorF is offline Find More Posts by ViktorF
Reply With Quote
Old Jan 19, 2006, 07:09 AM
Use the 4S Luke
feathermerchant's Avatar
USA, TX, Euless
Joined Aug 2003
9,343 Posts
ViktorF - 'Tormented' is a very good word to describe my feelings about this cowl.
I talked to Adrian Page and he offered to mold me 2 halves if I would make the plug and split it down the middle. He said to make it out of solid balsa so the vacuforming process did not crush the plug. 15psi over 80sqin generates a lot of force.
I'm going to ask him how to get it right as a solid. Best I can offer would be to make it as I am then fill it with foam and hope for the best.

TKG - I may have to go lost foam if this does not work out.

I spent about 20min last night with the balsa plane working over the corners and it looks much better now. I might be able to tolerate it if it doesn't come out too heavy.
5oz would be great. It is still 7.2 or so now.
feathermerchant is offline Find More Posts by feathermerchant
Reply With Quote
Old Jan 19, 2006, 07:48 AM
Recruiter - 60 Amp Club
Ed Lyerly's Avatar
Rutherfordton, North Carolina, United States
Joined Apr 2001
5,941 Posts
FM,
Very nice work. Thanks for sharing the construction photos on your cowl. I know you will have it "shaped up" in no time .
Ed
Ed Lyerly is offline Find More Posts by Ed Lyerly
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Video Stevens Aero Edge 1.5 better quality Brycycles Electric Plane Talk 0 Oct 26, 2006 12:12 PM
Discussion Stevens Aero Edge pictures, here's mine, post yours 3dcraz Sport Planes 16 Aug 07, 2006 06:58 PM
Video Another SA Edge 1.5 Maiden feathermerchant Electric Plane Talk 1 Apr 25, 2006 05:43 PM
Found NIB Stevens Aero Edge, Re-Groove, Cap or Mountain Models Etana punkindrublik Aircraft - Electric - Airplanes (FS/W) 6 Mar 28, 2006 12:37 PM
Beta Build: Stevens Aero Groove Pt.5 kepople Sport Planes 499 Feb 10, 2005 04:14 PM