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Old Apr 21, 2006, 06:21 AM
Test your skills....fly IMAC!!
sun.flyer's Avatar
Swanton, Ohio
Joined Feb 2005
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FM,

The new elevator is looking extremely strong. The additional weight will definately not effect the way it flies. Sounds like it will actually help on your cg placement with the packs.

Tim
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Old Apr 21, 2006, 06:21 PM
Smashes Things
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Montpelier, VA
Joined Feb 2005
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Mass Balancing Thoughts

I have been thinking about mass balancing and I am now thinking that this should not buy you much. When I think about the forces on the elevator, it seems like a small 1 oz force would be quite small compared with the aerodynamic loading seen on the piece.

Are you saying that the dynamic forces are accentuated by the off balance? For instance, if the piece is tail heavy, the air pushes the rear up then the servo tries to push it down, then the extra weight on the balancer works with the servo thereby decreasing the overshoot of the servo trying to center, thereby causing less flutter? (this may be greek, but I am going with it, etu?)

Typ
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Old Apr 21, 2006, 11:49 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Feather,
Looking like a stong repair! Thanks for the information on counter balancing as well. Do you think it be under 10lbs. with the bigger motor set up and the repair?
Bryce
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Old Apr 22, 2006, 12:09 AM
Use the 4S Luke
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I'm no aeronautical engineer but you could think of an unbalanced flexible surface like a napkin held out the car window. At rest it droops vertical and when moving it flops about. If it were stiff you could hold it, like a servo does, up to some speed then it would oscillate. The stiffer the higher the natural frequency of oscillation and generally the smaller the amplitude. But if you balance it so it remains level at rest it's harder to start the oscillations.
BTW What starts the oscillations?
Mechanical - Vibration from the motor/prop, servo twitching.
Aerodynamic - propwash, turbulence.
Others?

Note the part that broke off was the farthest from the servo. The stiffness definitely affects the tendency to flutter in the first place.

Bryce - I did a rough calc and with the 5330 and 10S 5,000 or so it would be ~2,000W and 8.5lb. I think that's more power than is safe on this thing.
My whole goal is to prove that a 75" plane can be made to fly very well on a (?) cheap power system - 6S and an outrunner. That being said, my experience with 4130's tells me that it's about a 1,000W motor so I am looking at some slightly larger motors (1200-1400) that could run on 6S. I don't think I'd try to hover this with the current setup. Maybe with a 16X8 but I think you'd cook the motor with the 16X10.
Hyperion? Hacker? I've got to get it fixed first then see what the CG does.
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Old Apr 26, 2006, 10:38 PM
Use the 4S Luke
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Well, Ive decided to sheet all the tail surfaces and move the servos to the cockpit to help the CG. It will add ~6oz for sheet and mass balances. Moving the servos will gain ~4oz so I'll still need some help. I figured out that I can install the servos on the existing structure so I won't have to add any weight there. Losing their extensions will also save some weight. I'll operate each elevator with it's own pull-pull. That eliminates the joiner and allows independent adjustment of each elevator travel and centering.
Sheeting the fin rally stiffened it up. When I sheet the rudder it should help stiffen everything even more. Covering the fin and rudder while installed should be interesting.
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Old Apr 27, 2006, 05:41 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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Yes! It looks great Feather!
Bryce
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Old Apr 27, 2006, 08:44 PM
Use the 4S Luke
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Wait till you see the pics tonight.
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Old Apr 27, 2006, 08:56 PM
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Weatherford, Tx.
Joined Oct 2003
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James,
Looks great !! I hope you get it to work in time for the Seagoville fly-in !! I know those tail feathers will work now !

Rick
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Old Apr 28, 2006, 06:47 AM
Use the 4S Luke
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Better than Viagra

Wow - the bias sheeting really stiffened up the fin and rudder!
One side I could glue easily from the open side. The second side was much more difficult. I did the second side of the rudder in pieces. It used almost 2 sheets of 6X36 1/16" balsa. If you ever do this, be sure to measure the angle as I could not accurately guess the 45deg it took.
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Old Apr 29, 2006, 11:43 PM
Use the 4S Luke
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Hope y'all are flying.

Was too windy this am so I got a little work done.
I'm ready to install the servos and hook up the controls.
Then see if I can get CG. It feels way tailheavy.
To get the 45deg throws I have a little less than 1/32 hinge gap. I used 2 full size CA hinges on each elevator and ~6 drops of CA on each side of each hinge. The hingeline will get sealed.
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Old Apr 29, 2006, 11:48 PM
Test your skills....fly IMAC!!
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Swanton, Ohio
Joined Feb 2005
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FM,

Looking very solid indeed. Nice work, should hold very nicely for ya.

Tim
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Old Apr 30, 2006, 05:13 PM
Recruiter - 60 Amp Club
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Rutherfordton, North Carolina, United States
Joined Apr 2001
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James,
Sorry to hear you will not be making the trip to SEFF this year .
I'll always remember your Siamese CAP flying there last year.
Hope to see your 1.5 Edge there next year.
Ed
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Old Apr 30, 2006, 08:45 PM
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Very nice work, very clean.
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Old Apr 30, 2006, 11:39 PM
Use the 4S Luke
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Rats!

Well got it finished about 30min ago. Checked incidence and it's fine. Weight now is ~8lb 4oz. How did it gain a pound? I added about 8oz of sheet, lead weights, and pull-pull hardware but lost the servo extensions, elevatro joiner, and pushrods.
Maybe it was eatin grass while I wasn't looking. To get CG I'll have to put all batts in the motor cage. Ordered the 5320 motor so I may try that. Have also ordered pattern prop but it won't fit my 'electric' spinner. So it's back to Roy's.
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Old May 01, 2006, 01:11 PM
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Man this thing is turnin out pretty sweeeeeeeet......
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Old May 01, 2006, 01:40 PM
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Grass Valley California
Joined Jun 2004
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with that as stiffffff as it looks you will probably not need the extra weight of the mass balance. athe aerodinamic balance will probably be enough, could save the weight of all the lead in the tail.

I believe very few models are useing mass balanceing even in the big stuff, food for thought,you can over engineer a good thing

Dennis
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Old May 01, 2006, 02:33 PM
Use the 4S Luke
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Yup but seeing a piece of your plane depart in midair (see video) has a way of affffffffectnig you.
The mass balances are only 2oz total.
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Old May 01, 2006, 08:58 PM
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Eureka!

Remember when we threw those little gliders? When it stalled or looped (tail heavy) and you wanted to smooth out the flight path? You just slid the wing back and WaLa! Instant CG!
How about I just 'slide' the wing back 1.5" or so?
Any comments?
I guess not. It's too near the Seagoville fly in to do something radical so here is my setup for now. Those are 2 Tanic 3S 5,000 packs nestled in the mount cage. I think they'll get enough coolling there.
This setup puts the CG very close to that of the maiden. Just in front of the servo screws.
The maiden was done with a single 6S 5,000 pack so this is essentially the same battery. I'd love it if my 3650's fit but I think they're too long.
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Old Jun 09, 2006, 09:46 PM
Use the 4S Luke
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Update time. I've flown the 1.5 Edge about 5 or 6 times now. I'm still kind of hard on the LG so I repalced it (5/32)with 3/16 and lengenthened it too. It is stiffer and can accomodate a 20" prop. This is a good thing because I decided to upgrade to a 5320. Not a radical or heavy as a 5330 but can swing an 18-20" prop. The extra weight does help with the CG. But more would be better. I just can't imagine a 2500W motor (5330) on a 10lb plane.
I'd like to be able to hover. From what I can tell, it pulls ~1600W on 10S with an 18X12. Well that sounds like a lot of pitch speed so I'm gonna try 8S and 9S and a few diferent props. It may be that a 20X10 or 8 is what I'm looking for.
With the 4130 on 6S (16X10) it flies fine pattern and harriers great but has mediocre vertical and won't hover at all. I have some new super duper Tanic cells that I want to try at 8S. Should allow me to swing a big prop.
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Old Jun 10, 2006, 05:25 PM
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Did not get to fly the Edge 1.5 today. I did a few power checks though. Om the 18X12 it pulled about 1400W from a 9S Tanic 5,000 (10-12C, 2lb 4oz) pack.
I also tried an 8S setup of Tanic 4350's (20-30C, 2lb). Surprisingly, the 8S pack had more power ~100W than the 9S pack. I think the 20X10 is the ticket.
Bad news is that sometimes the motor would make a growling ound followed by a sining sound. I think the controller was losing synch with the motor. Also every other time I connect the battery to the ESC, I get no tones or light. I have a call in to Castle....
So I flew the 4350's in my Venus which takes 4S and they came out hardly warm. Vertical as well as top speed are better too. I flew 10min and put ~3800 back in.
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Old Jun 14, 2006, 06:49 AM
Use the 4S Luke
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Talked to Castle and they are going to look at the AXI and controller so I have sent it to them. I'll post what they find. Meanwhile, I installed a Hyperion 4035/12 on the nose - this plane is becoming a test bed. The motor ran smooth. Good news is no growling and I saw as much as 65A (on an HV45!) and >1800W. That is a little much for this motor and I had a 16X8 on at the time. The motor kV is just too high for this plane and 8S so I'll recharge and try 7S tonight. I'll bet it will be fast. I was planning on a 'fast' project for this motor anyway.
I still have the AXI 5330 to try...2kW <10lb
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Old Jun 15, 2006, 07:39 PM
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OK so tonight with Tanic 4,350 packs charged (they were not last post), I tried 7S and the 16X10. Saw 1700W and 65A!!! That's 3.7V per cell and 240W per cell!!
Holy smokes Bullwinkle! So I'll try this combo Sat and let y'all know. I'm thinking it will be too fast. It will do until I get the 5320 back from Castle.
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Old Jun 15, 2006, 08:08 PM
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Rutherfordton, North Carolina, United States
Joined Apr 2001
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James,
Try that 5330/18 you got from Steve H on 8S. You will like it with something like a 20x8 APC-E prop.
Ed
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Old Jun 15, 2006, 08:43 PM
Use the 4S Luke
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I have a 20X10 and a 5330/24 too.
Remember my 8S is like a 9S
I am tempted to use a 5330/24 but I was saving the 24 for the Hawk. I'd like to swing a 3 blade 18.5in prop and it will do it. Plus I am out of HV esc's and UBECs.
Many choices.
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Old Jun 16, 2006, 05:41 PM
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45HV deal

OK found a heck of a deal on 45HV's so I bought one.
http://stores.ebay.com/www-rctoys-co...QQftidZ2QQtZkm

Brycycles got the 1.5 cutouts from me and I said he could post his progress here so lets encourage him.
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Old Jun 16, 2006, 10:25 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Much thanks to Feather for a box of cut-outs I received today. He is a great guy y'all should know! Here are some progress photos on my attempt at the 1.5 Edge. My work isn't nearly the quality of FM's but I think it will fly when done. I thought I could get the tail featers done quickly. After $50 something in balsa I was on my way. To save time and material I sheeted in alternating directions on top and bottoms. The end result ultamately isn't as strong as 45 degree sheeting but I think it will work. I also used carbon strips on the edges.
Bryce
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Old Jun 17, 2006, 09:12 AM
Use the 4S Luke
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That looks realy thick. What is it?
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Old Jun 17, 2006, 10:46 AM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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I used 3/16 balsa throughout with 1/16 sheeting (5/16 total width). Some strips were 3/16 x 1/4 for the inside bracing were I thought more stress would be.
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Old Jun 22, 2006, 04:29 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
I made some progess this past week. The fuse is almost done. I still need some sanding and a few choice reinforcements, but it looks really good so far. The fuse and feathers weigh 620 grams.

Bryce
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Old Jun 22, 2006, 05:17 PM
Use the 4S Luke
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That's 22oz American
Looks great so far. I'd lose those Midwest stickers tho. And easier to install the wing tube before you finish that sheeting. Are you moving teh wing back a little for CG or are you going to install a 5330?
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Old Jun 22, 2006, 05:45 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
My plan was to talk with you about the cg issues you encountered. I used a heavier ply for the firewall than you recommended and I do plan on using the 5330-18. I don't know if the cg will be an issue.
What was your wing tube dia?
Now if only I could get Bill to cut me some ribs.....
Bryce
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Old Jun 22, 2006, 06:03 PM
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Flagstaff, AZ
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Is that midwest wood for aircraft use???
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Old Jun 22, 2006, 06:12 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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It clearly states "Not for aircraft use" on the decals! I think they are trying to keep it off of a Cesna.
Woooo hooooo, Bill just said he would cut me some ribs! Good days.
Bryce
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Old Jun 22, 2006, 07:36 PM
Use the 4S Luke
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Mine has a 1" Al tube.
I sent you a scrap of the sleeve I have so you could try it out on your wing tube and compare it to your sleeve. Bill cut my ribs to fit that scrap I sent you. If it matches yours just have him cut the ribs the same size as he cut mine.

I just got my HV45 from Dragonfly so I should go ahead and mount up the 5330 to see where the CG somes out. I'll probably only need 8S.
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Old Jun 22, 2006, 09:10 PM
gwh
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Quote:
Originally Posted by feathermerchant
I'll probably only need 8S.

But use 10S. You know how that tree by the old pump house can jump up and grab planes!
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Old Jun 22, 2006, 10:11 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
I'm planning on using the 10s too and more cargon. Feather, thanks again for all your hard work on the cut-outs!!!! I have found everything I have needed as well as a complete DVD and your note(I didn't find that until last night).
I am wondering who will get them next?

Bryce
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Old Jun 22, 2006, 10:31 PM
Use the 4S Luke
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gwh - I figure 1800W into a 20X10 on a 9lb plane will clear that tree. Anyway that's why I have you spot fo me.

Bryce - Only real men build from scratch.
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Old Jun 22, 2006, 10:38 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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I'm still growing and drinking my milk , hence your cut-outs!
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Old Jun 26, 2006, 02:45 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
I finished the motor mount. I used Gorilla glue to fill in the gaps, but most of the tabs fit pretty well.
I got to thinking about the cowling and decided to make a plug for our local carbon guys to see if they could use it. Although it seemed straight forward it did take me about 6 hours of cutting and sanding to get a decent shape. If I can get cowls made I will send one with the cut-outs when I return them.
It sits at 7.5lbs will all the radio gear, batteries, fuse and tail feathers. Hoping for 10lbs (and 2200 watts) when its done. I will post more pictures this evening.
Bryce
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Old Jun 26, 2006, 04:39 PM
Use the 4S Luke
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Waiting for pictures...
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Old Jun 26, 2006, 10:43 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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OK, here are some pictures. Be kind, it is my first attempt.

Bryce
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Old Jun 27, 2006, 06:35 AM
Team 3DHS
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Man, that's freakin' impressive! Keep up the good work.
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Old Jun 27, 2006, 08:04 AM
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Nicely done! And good job making that helmet out of the scraps. -Steve
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Old Jul 01, 2006, 01:57 AM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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I spoke with my local hobby guy about my cowl. He informed me I made the plug out of the wrong material so I needed to start again. I attempted a balsa cowl just in cast the mold dosen't work. I bent 5/32 wire for lg as well. Its getting closer.
Bryce
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Old Jul 01, 2006, 02:43 PM
Use the 4S Luke
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If you're going to use the 5330, I'd go with 3/16 gear. I just did and it's lots stiffer.
Hope I didn't steer you wrong. I made my firewall ready for 3/16 so the switch was easy. Love the bike.
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Old Jul 01, 2006, 07:08 PM
Too lazy to repair!
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Round Rock, Tx
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What did you make the plug out of, foam? If that is the case, and you only need to make one cowl, then you made it out of the right material. I have done this before. You simply use fiberglass cloth and epoxy to cover the foam plug. If you do a search you should be able to find a how to. Once you have it done, you simply use gasoline to disolve the foam and viola, you have a cowl.

Joe
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Old Jul 02, 2006, 02:15 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Thanks for the tip! I will try the fiberglassing this week. The wood cowl is almost finished and I am liking what I see. I just need to sheet it some more. I am amazed at how much you can shape 1/32 sheet balsa. With enough Windex I got it to make some complex curves without breaking.

Bryce
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Old Jul 03, 2006, 02:11 PM
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Grass Valley California
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use thin laminateing epoxy and fiber glass with the weave designed for laying up glass parts, may not be available at the hobby store. I got mine at a specialty plastics store. after I layed it up I used a LARGE! baloon to hold the glass down. blow it up and push the cowel into it then let the air out. you may want to add the air scoop after the cowel is finished. fill all the small hols in the plug with spackel

there are some really good sites for building glass parts, not necessarily in the groups try a google search

easy on the epoxy and glass, it gets heavy in a hurry, the baloon will squeze the extra epoxy out

Dennis
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Old Jul 05, 2006, 01:34 AM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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Dennis,

Thanks for the tip. I am planning on trying it out in the morning. I don't know where I can get that large a ballon but I will look.
Here are some pictures of the wooden version and our bike pile at the end of the July 4th Cruiser Nation bike race.

Bryce
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Old Jul 05, 2006, 05:49 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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Here are a couple more shots of the cowl.
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Old Jul 05, 2006, 06:24 PM
Test your skills....fly IMAC!!
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Looking real nice Bryce. The scoop should definately help with the cooling.:P

Tim
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Old Jul 05, 2006, 11:01 PM
Use the 4S Luke
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OK 21X10. How many S and what's the Amps and power?

Where'd you get the snazzy canopy?
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Old Jul 05, 2006, 11:05 PM
BOSS
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Looks good Bryce! Is that the canopy from your Hangar 9 Extra?
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Old Jul 07, 2006, 11:31 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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Hey Josh! I am still looking forward to a nice vid of yourself and your plane now that you should have a little more time on it! You have always impressed me as a pilot--yup, I get stoked with your piloting!
The canopy IS from my next Extra 260. I accidentaly kicked it, cracked it, and now it looks good on my project. Hoping the wing ribs will be done soon, they might be done now knowing Bill, but I do not want to pester him. Hopefully a maiden in 2-3 weeks. It take alot of time to cut, fit, cut, fit, cut, fit, cut, fit, cut, fit, cut fit, cut , fit , cut , fit, cut , fit ,cut, fit, cut, fit, fut, cit, ----Hey, will I see you agian at the next AZ Elec Fest? My thumbs are slightly better than last year! Tell your bro I said Hey.

Feather,

I was seeing 2100-2400 watts using a similar prop. I had a 22 x 10 mejlik but it dosne't work anymore. Something about needing both blades attached to one hub? So, If I can get the 1.5 to 10-11lbs I should be fine.

BTW, I flew at a soccer field this morning on the Regular sized Edge and had a blast! You guys with nice grass fields are quite lucky. I have to get the city to put in a field, sprinklers, and H20 to get a green tarmac.
Bryce
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Old Jul 08, 2006, 02:17 PM
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Dennis C's Avatar
Grass Valley California
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the wood work on the balsa cowell is lookin very nice. may be difficult to do better and lighter with glass

big baloons are out there just have to do a little work,try a party store

Dennis
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Old Jul 08, 2006, 02:48 PM
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Bryce - Was that 2100W on 10S or 8S?
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Old Jul 08, 2006, 05:41 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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That was on 10s. I only have one set of big batteries right now. Thunder Power F3A set of two 5s 5300mah packs. I am looking for a lighter battery set but haven't made up my mind yet.
Bryce
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Old Jul 18, 2006, 03:24 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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OK, so I got bored last week and knowing the way I tend to fly I built up another 1.5 fuse. Taking a few pages for Mr. G. I did the new fuse in 1/8 balsa and 1/16 balsa. I also used thinner ply for the firewall and battery tray. I used his 1mm balsa technique for the rudder and elevator. I will post weights and more pictures tonight.
Just got the word from the man that I have some ribs showing up this week. Perhaps a maiden on Sunday.

Bryce
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Old Jul 25, 2006, 05:45 PM
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Maiden Sun???

Anyway I have decided to try the AXI 5330/18 and though it did move he CG up about an inch, I still had to add a battery tray to the mount to accomodate these long 4350 packs. I just ran it up on 8S with an APCE 20X10 and it only drew 1350W @ 45A
One of the packs has been flown and the other is freshly charged so that is a representation of average power available. Motocalc estimates 54mph pitch speed and about 15lb thrust. It weighs ~9.5lb so it should hover. I could go 9S with this setup if batteries fit.
I do have a 20X12. There is not clearence for 22". I'd have to bend more gear.
I had to buy a reamer to ream out the prop to 12mm(!)
Now the hole is too big for my balancer. Next one will get balanced before reaming.
I had another servo failure too. This is the second HS635 that has quit working in one direction. I sent the other in and Hitec replaced it. I'm considering more powerful servos.
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Old Jul 25, 2006, 06:04 PM
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Quote:
Originally Posted by feathermerchant
I had to buy a reamer to ream out the prop to 12mm(!)
Now the hole is too big for my balancer. Next one will get balanced before reaming.
James,
I took my 12mm prop shaft to a machine shop and had it cut down and threaded to 8mm (like my Hacker stuff)
I understand you can buy an 8mm replacement shaft from Hobby Lobby.
Rediculous that AXI made these 12mm.
Good luck with your maiden.
Ed
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Old Jul 25, 2006, 06:21 PM
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Yeah I probably should do that.
This will be the third power system so it will be a re re maiden.
Such is experimentation.
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Old Jul 25, 2006, 11:04 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
I tried to build my wings tonight, but I cut the main spar out of 1/8 and the ribs are cut for 3/32. Not much progress.

I decided to use 100oz. torque HS servos but I forgot the model number. Apparently they are new. I am thinking of using the Cyclone motors Horizon is offering for power, but I still don't know.

Fuse #2 came out almost 140 grams liter and the tail featers were 40 grams liter. I sheeted with 1/16 on the 45degree of the grain. I meant to use Mr. G's technique of using thin capping strips but forgot. Heck maybe I will try a third bird.
Feather, I will get the plans back very soon!

I have to go on vacation thurs so no building for another week. It seems to be dragging along. Maiden on Sun--yeah right.

Bryce
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Old Jul 26, 2006, 07:03 AM
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I think 3/32 for the spar is plenty because you have the Al or carbon wing tube for most of the span. Just make sure to join the tube sleeve to the spar so the weight can be transferred. Looks like you're heading the right way on the fuse. Lighter in the tail is better.
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Old Jul 27, 2006, 01:54 AM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Some progess was made!
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Old Jul 27, 2006, 06:51 AM
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So where do you sleep?
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Old Jul 27, 2006, 10:56 AM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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Under a pile of balsa scraps lately!
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Old Jul 29, 2006, 05:02 PM
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Re Re maidened today. The 5330/18 on 8S and a 20X10 is my favorite so far. The 20X8 has better vertical but coming out of a downline, you realy have to get on the throttle to keep your speed. The brake on teh ESC works great for slowing descent and making landing approaches.
It does great parachutes and blenders just like the small one.
On the last landing though I let it get too slow and now I have some repair work to do. No major damage that I can see but mostly the cow(l) split and the motor cage tore off it's base. Did not even break that big ol prop. LG is bent of courst but I think I can straighen it.
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Old Jul 29, 2006, 05:25 PM
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James,
I just knew you would like the 5330/18 . Glad to hear the maiden went well .... except for that last landing . Hope you have it back in the air soon.
Ed
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Old Jul 29, 2006, 05:52 PM
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Yup next project is a 13lb biplane with a 5330/24. I'll probably run it on 10S. Maybe I'll be able to start it next week.
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Old Aug 01, 2006, 11:36 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Got a little further today. I need to fasten the wing tubes in place, do a little more cutting, some sanding, and final tweaking. This has been a very fun project!
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Old Aug 02, 2006, 06:59 AM
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Looking good so far...
I notice you've removed the rib alignment tabs already. Be careful when you glue in the wing tubes that you don't leave the wing twisted.
Your cowl looks more scale than mine.


My structure is repaired. I just need to recover the front of the fuselage and cowl. Oh and straighten the LG. I should post a pic.
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Old Aug 02, 2006, 10:07 AM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Feather,

The wings are amazingly straight, I don't think the tubes should be an issue. I see you really like the bigger AXI in your plane. I am curious what the auw is with the larger motor? I am going to start putting HS645mg in tonight for the tail feathers. Both are going to be pull/pulls I think. That way I can get the servos under the canopy to help with CG. My LHS guy also as a supply of "5 lbs balsa" that I am considering building more feathers up with. He said I can save more grams and still have it be strong. You should be getting your cut-outs back very soon. Thanks again! By the way, do you and yours have a favorite place to eat?

Bryce
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Old Aug 02, 2006, 11:52 AM
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I glued in my tube sleeves before sheeting so my wings were pretty floppy until then. The sleeves made them stiff so I did not have to worry much about twisting them as I added the sheet.

The AUW with the 5330/18 is about 9.5lb
A far cry from the 72" 12.5lb Extra (ARF) I had.
On Tanic 8S 4350 and the 20X10 it only draws about 50A and ~1400W WOT
That's easy on all the electronics. It took off on about 1/3 throttle which made me really excited. The prop dia matches the stabilizer span.
My 10 min flights have been using just a little more than half a charge.

I could drop some weight by going to the 3650's (about 5oz) but I'd have to check the CG to see if it's doable.

I really like the JR DS821 digital servos on 6V.

Hmmmm food...Quiznos,Chilis, El Fenix
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Old Aug 02, 2006, 03:01 PM
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Do you know what the wing area is?
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Old Aug 02, 2006, 03:11 PM
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It would be 440 X 1.5 X 1.5 = 990
The 440 is from the SA website
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Old Aug 16, 2006, 08:02 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
I got off work early today and managed to get some building time in.
The plane with 4 servos weights in at 4lbs 9oz. Motor/batteries/lg are another 5lbs. I hope the maiden will be this weekend. If I can get some video I will.
Bryce
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Old Aug 16, 2006, 09:25 PM
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Don't forget the landing gear!
Looks good. Waiting for video.
We have 2 flyins here back to back a the end of Sept.
Feel like a road trip?
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Old Aug 17, 2006, 07:53 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Feather,

If I could get away I would! As it is this is my busy season. Give me the dates and I will see. Thank you for the invite! Your cut-out should make the mail next week. I put the LG in last, the rest of the gear should be tonight. Testing Saturday night, and maybe a flight on Sunday. I am getting excited to fly it, but scared at the same time. I have put way more time into this than I thought. I see why arfs are so popular and how SA kits bridge that gap very well.
I won't fly it without video of the maiden; just-in-case!
Thanks again, it has been a learning education to say the least. 10lbs, 75inch span and 2300 watts can only be a good thing!
Bryce
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Old Aug 17, 2006, 09:20 PM
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2300! Mine's only 1300 and it really goes. Make SURE the CG is AHEAD of the front aileron screws. You'll be glad. Even if you have to put the batteries in the motor mount get a good cg. I've gone to 3/16 wire for the gear. I'll get you a link to the events. Turns out they are 2 weeks apart.....

DEAF Sept 23-24
http://www.rcgroups.com/forums/showthread.php?t=538593

BEST
10-7 & 8

Love to see you at one or the other.
We even have some cycling trails.
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Old Aug 17, 2006, 10:53 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Wow, didn't know you ride! Now, if I can explane to my girl about some new trail down in Texas, and an event pertaining to my hobby, it just mightwork out!

I was looking at the 41xx for the plane, but I thought you went up to a 5330 and was really likeing the results? On 10s, 21-12 Mej prop I am pulling over 2300 watts @ 72 amps consistantly on an Axi 5330 a HV110. Oh wait, this means mine should realllly gooo! I hope I'm only compensating for the higher altitude. Big motor, big plane, big batteries. Shoot, the big Chevy is just around the corner!

Bryce
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Old Aug 17, 2006, 11:16 PM
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goo is right!
I haven't ridden in a while but I do enjoy it. Have an ancient Super LeTour II that must be close to 25 now. Also a Sears mountain bike. No suspension but 18 gears.
I am running the 5330/18 on 8S Tanic 4350 (like 9S on other brands). It is drawing ~45-50A I think. I ran it up with one 4S pack about 1/2 discharged so I might be at 1500W. Anyway the Phx45HV is cool and nothing else gets hot at all. The batteries come down about 1/2 charged after 10 min. I have flown the APC-E 20X10 and 20X8.
The 10 suits me more I think. The 8 pulls better of course but after a power off (to engage the brake) downline for a Cuban 8 you have to quickly advance the throttle to 75% or more for the next upline. With the 20X10 it's only about 50%.
On the first flight with the 5330 I had the 20X10 on and the plane took off about the time I reached 1/3 stick. I knew it would be a winner. Second flight with the 20X10 I had it on high rates and did an unplanned vertical departure.
If you were doing 3D a lot the 8 would probably be a better choice.
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Old Aug 18, 2006, 03:01 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Thanks for the info Feather. I am stuck with 2.3 : 1 thrust with the 5330 on 10s! I do hope I can fly 3d with this plane, actually I just hope it flies period! I put the lg in last night with 30min epoxy. The motor, esc, on/off switch and ubec also made it into the fuselage. I would like to purchase a "shunt" for it but I can't find one. I need a new spinner (at lunch today), install the rx, and double check my tripple checks. I'm waiting for the first few flights before I get a decent coving scheme on it. I think it will fly on Monday as my video guy has to work Sunday.
1.5 #2 is almost done as well. I think it will save only 1.2lbs over the first, but it did build quicker. I need to get Bill to cut out another set of ribs though.
Bryce
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Old Aug 18, 2006, 03:32 PM
gwh
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Fort Worth, Texas
Joined Dec 1996
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Bryce,

MPI is showing a shunt arming system for $8.95. http://www.maxxprod.com/mpi/mpi-21.html

It has Dean's Ultras for the battery and Anderson Power Poles for the shunt. Would be easy enough to build your own.
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Old Aug 20, 2006, 08:47 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
GWH,

Terrific! That is exactly what I want!

Thank you very much,

Bryce
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Old Aug 29, 2006, 10:42 AM
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Flagstaff, AZ
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I have the camera charged, Wednesday morning booked for Bryce's Maiden. Thats right, I'm calling him out right here and now.
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Old Sep 22, 2006, 07:03 PM
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Bryce - Where are you? I thought we'd have maiden video by now.
Finally finished the 'cowing' on the tail and wings in preparation for DEAF.
The pilot look like he wants out. He's probably seen me fly before.
I have not flown it with the spinner yet. Without, I know I get great cooling.
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Old Sep 22, 2006, 07:41 PM
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Ed Lyerly's Avatar
Rutherfordton, North Carolina, United States
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James,
She looks mooooovelous ! Good luck with your flying at DEAF. Hope someone shoots some video th share with us.
Ed
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Old Sep 23, 2006, 11:40 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Feather,

My HV11o smoked the evening before the maiden. I have been waiting since. I have had this experience once before and it was handled expeditiously. This time I refrain on comment.

OK, the esc smoked, I am waiting a replacement and josh darn does that plane look good!

Bryce

Hence my delay shipping your plans back. I am hoping to have them back as soon as it maidens without complications. My appoliges to you.
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Old Sep 23, 2006, 11:49 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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Nice fit!
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Old Sep 24, 2006, 09:21 AM
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USA, OH, Newark
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I have a 110HV that's smoked twice before it got off the ground. It only moved the prop a couple degrees each time. I declined the offer to have it repaired again, and opted for a replacement, but Castle has none in stock, and they said they don't know when they will have any more.

How many cells were you using? I'm using 12s.
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Old Sep 24, 2006, 11:11 AM
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I have a home grown shorting plug system on a couple of my bigger ones that are not easy to reach the packs. To short the deans I wrapped some wire around the posts, and flooded as solder bridge across them. Then I submerged that end is some epoxy, and grinded it off to a rectanble with a groove on each side to make it easier to grasp.

I found out pretty quickly that I needed to secure it to the side of the aircraft with a small piece of string, and leave it dangling from the side of the fuse when not in use, so I don't go to the field without it
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Old Sep 24, 2006, 02:04 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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My HV110 popped on 10s. This is the second time I have had this experience. Funny, but it worked for 10 flights and then gave up.
Bryce
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Old Sep 24, 2006, 02:38 PM
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How many amps were you pulling with the 110HV?

My first one died on the bench, the instant I advanced the throttle. The second tme I ran the motor several times, and taxied the plane around. Then when I hooked it up later to fly, it smoked the instant I advanced the throttle.
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Old Sep 24, 2006, 08:20 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
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If I recall correctly I have never seem more than 78amps. The 110 shouda held that just fine. Perhaps the supplier of the capacitors, diodes, ect should check out ISO.
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Old Sep 24, 2006, 08:59 PM
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Don't know if this is relavent but they had many Phx80's go out with a defect in an inner trace in a circuit board (there are several layers) that was visually undetectable.
This defect would allow the capacitors to become disconnected from the circuit with disasterous results. Mine worked once then later when I took it to the field, I plugged it in and as soon as I touched the throttle it torched. Castle replaced it of course.
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Old Sep 25, 2006, 11:42 AM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Castle repaired mine once when I crashed it, replaced it once when it blew up, and now we shall see what the out come is. I've read it could take awhile either way. I really don't want to purchase another ESC, but I want to fly the 1.5! This week is screwed up for me with a bike trade show so I can put off doing anything till next week. Or order a new ESC and have it ready for next monday????
Bryce
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Old Sep 25, 2006, 11:51 AM
Test your skills....fly IMAC!!
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Swanton, Ohio
Joined Feb 2005
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Quote:
Originally Posted by Brycycles
Castle repaired mine once when I crashed it, replaced it once when it blew up, and now we shall see what the out come is. I've read it could take awhile either way. I really don't want to purchase another ESC, but I want to fly the 1.5! This week is screwed up for me with a bike trade show so I can put off doing anything till next week. Or order a new ESC and have it ready for next monday????
Bryce

Any pre-maiden pictures you'd like to share Bryce?

Tim
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Old Oct 07, 2006, 01:52 PM
Brycycles@7000ft.
Flagstaff, Arizona
Joined Oct 2004
398 Posts
Alright! My new replaced HV110 arrived yesturday. Maiden in the morning--fingers crossed! My video guy won't be there, but I will see if someone else can shoot for me.

Bryce
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Old Oct 07, 2006, 08:38 PM
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Good luck to you. May the Field Effect Transistor gods be with you.
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Old Oct 07, 2006, 10:58 PM
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Not to curse your attempt or anything but my HV45 burned some FETS Fri.
Second dead HV45 this week.
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