**EdgeRC Devastator DTV** DS record holder for "chevron foam" 154MPH!!

THUREN · Aug 29, 2006, 11:16 PM

Edit, 9-23-06...

Went to Parker Mtn. today with the intent to see how fast I could get this wing DS'n on the backside. I had no expectations to come home with a record but I did!!! BY A HAIR!!! 154MPH bumped from Vic's(-double-V-) record of 153mph with his own 42' Manta purpose built DSer... So stoked!!! It was fun battling it out with Vic on the slope, and we were talking about his new stuff coming out... Gonna' try to hold the record but Vic's surely on a mission to nab it back. Got it for now, and we'll see how long I can keep it...

More details starting on page 6....
__________________________________________________ _
Edit, 9-17-06

Justin added this full kit to his website, and every detail I added he has put in the kit, and some. Moulded pushrod covers, all carbon main spars, carbon drag spars, true aileron shaped elevons(no flat balsa), BOMB PROOF center fin, etc..

Available here ~Edge-RC Devastator DTV sloper~

__________________________________________________ _
This is my second Devastator and the only reason I parted with the first, was so that I could persuede my buddy into getting beyond the Weasel Pro. After seeing my Devastator fly, he litterally whipped out cash right on the slope.. It "was" my best flying plane..

~~Thread for my first Devastator~~

~~Link to a video of my first Devastator~~

After talking with Justin(owner Edge-RC) and ordering up some more Devastators, he decided he would make a true sloper from the E-planform and change up a few things. It now has a center fin, and IMO a MUCH improved spar system.

A few notes..

~ This is a wing in the prototype stages and availibility could be a moderate wait. Justin is a busy man and don't expect it in a week if you order one.. Few weeks minimum probably. It's worth the wait...

~ I will be adding a few things which are not in the "kit" and will try to note them as I progress with the build. Justin may chime in also and add some info, hopefully..

Can't wait to get this thing done and bust some more "grass skimming ACRO DS"... Such a great handling plane. Can't say it enough..

I am using Goop in this build as my target weight is 27-30oz, and I want STRENGTH. Nothing compares to Goop in all out EPP strength but if you want a slightly more delicate stucture, and about a 3 ounce lighter AUW, I'd go with PU glue... PU is great but becomes brittle, and from my experience, won't take a "shock load" like Goop.. Building with Goop takes time but it's worth it IMO..

-Don

Day one...

THUREN · Aug 29, 2006, 11:22 PM

Still day one..

I don't use the wing beds as they aren't usually 100% true. A good flat surface works great with this plane as there is zero washout etc. Just make sure to weight it evenly..

-Don

THUREN · Aug 29, 2006, 11:32 PM

Day two...

This new kit has the 4 added spars which do not come in the E-version. I added ribbon spars to my first Devastator but they became soft after a few poundings. These a true heavy wall round spars and they do an awesome job of making a reliably stiff/strong wing...

THUREN · Aug 29, 2006, 11:42 PM

Day 3....

The center fin mount plate design is 100% Justins, but I am flipping it over and adding a center carbon rod in the slotted plate. The fin mounting is hard to describe but you'll see as I go...

It will be BOMB PROOF as the two plates will be locked, and then Gooped to the main spar on top of that. The entire assembly would basically have to be ripped out with the main spar!!!

THUREN · Aug 29, 2006, 11:50 PM

Day 4.....

Note..... On everything I goop I use the masking tape to leave a smooth surface, but it slows dry time substantially... I remove the tape after the goop gets "rigid" but not fully dry....

THUREN · Aug 29, 2006, 11:52 PM

Day 5.....

willhaney · Aug 30, 2006, 12:00 AM

Man this is looking sweet! Did you use flats on the trailing edge or tubes?

-DoubleV- · Aug 30, 2006, 02:06 AM

im shocked!...... i was waiting to read something about 'calling me out' don, lol.

V V

hydrogin · Aug 30, 2006, 03:00 AM

Don,

I'm liking that black and green look. Very Xbox

Lance

WingmanDan · Aug 30, 2006, 09:15 AM

Great job so far Don!! As you know, I recently built one of these DTV devastators myself. They are super fast for a chevron, like a halfpipe. AKA combatwing killers. But in a recent unfortunate "turn" of events (pun intended), it landed upside down on the fin

I am going to redo the fin mount like yours (I have been waiting for this thread).

I want to see how you end up at 30oz, mine is only 20! At 30 it probably cuts the air waaaaaay faster.

Dan

THUREN · Aug 30, 2006, 10:26 AM

willhaney,
Flats for the sub TE. I like tubes also but I wanted this wing to be a combat basher also, and thin-wall tubes tend to split.

Vic,
LOL!!! I'll race ya' on the frontside but you can keep the DS record YO! Allthough these Devastators DS great(first plane I "pulled" an inverted lap with), they are more of an aerobatic close in DS'er and not the ba!!'s out wide lap screamer. Probably could be a wide lapper with some more weight but ehhhhh...

Lance,
Xbox? Is that some sort of video game gizmo?

Dan,
My first Dev came out at 24oz and I was trying to be a "little" conservative with weight. I used PU glue and CA a lot on that one but Goop is so much heavier, I'll be glad if this one says under 30oz.

At 24oz my last one could float in light air and SCREAM at the same time. I want this one to be a serious speed demon in medium lift and a few more ounces shouldn't hurt the light air performance. At 20oz your's must fly on NOTHING!!

-Don

THUREN · Aug 31, 2006, 10:20 PM

progress..

16oz now... Hmmmmm. lets take a guess......

Receiver........................... 1oz
elevons........................... 1oz
moderate/heavy tape job.... 3oz
center fin assembly............ 2oz
ultracoat......................... 1oz
Thinned Goop.................... 2oz
linkages, hinge tape, etc..... 1oz

27oz....... We'll see!!!!

WingmanDan · Sep 01, 2006, 09:07 AM

Don, sweet techniques! I especially like how you split the battery, I had trouble fitting mine around the spars but didn't think of splitting it like that.

I am anxious to know your final CG and throws. As I mentioned before, I have trouble with mine tip stalling in the turns... I even tried taping on winglets instead of the center fin but it did the same. Maybe mine is too light, I weighed it yesterday and it's only 17oz!!

THUREN · Sep 01, 2006, 10:02 AM

Quote:

Originally Posted by WingmanDan

Don, sweet techniques! I especially like how you split the battery, I had trouble fitting mine around the spars but didn't think of splitting it like that.

I am anxious to know your final CG and throws. As I mentioned before, I have trouble with mine tip stalling in the turns... I even tried taping on winglets instead of the center fin but it did the same. Maybe mine is too light, I weighed it yesterday and it's only 17oz!!

17oz..

Gnarly!!! Did you ballast with helium??

Should fly great really as long as you can keep it moving...

Did you try moving the CG forward yet? Or get a chance to go inverted in some OK lift? That will tell a lot, if it hasn't yet Dan.. With the CG too far back it will want to fall out of the sky in the blink of an eye, in a tight slow turn, like most "fastish" planks/wings. Most "fast" planes, even conventional planform will do that actually with the CG too far back.

Few more pics..

ajroahkni · Sep 01, 2006, 11:44 AM

don-got-skillz-dot-com

This is such an awesome, clean install.

Enjoying your work!

John

Aug 29, 2006, 11:16 PM	#1
THUREN blah... Join Date: Jun 2005 Location: Santa Barbara, CA Posts: 2,925	EdgeRC Devastator DTV DS record holder for "chevron foam" 154MPH!! Edit, 9-23-06... Went to Parker Mtn. today with the intent to see how fast I could get this wing DS'n on the backside. I had no expectations to come home with a record but I did!!! BY A HAIR!!! 154MPH bumped from Vic's(-double-V-) record of 153mph with his own 42' Manta purpose built DSer... So stoked!!! It was fun battling it out with Vic on the slope, and we were talking about his new stuff coming out... Gonna' try to hold the record but Vic's surely on a mission to nab it back. Got it for now, and we'll see how long I can keep it... More details starting on page 6.... __________________________________________________ _ Edit, 9-17-06 Justin added this full kit to his website, and every detail I added he has put in the kit, and some. Moulded pushrod covers, all carbon main spars, carbon drag spars, true aileron shaped elevons(no flat balsa), BOMB PROOF center fin, etc.. Available here ~Edge-RC Devastator DTV sloper~ __________________________________________________ _ This is my second Devastator and the only reason I parted with the first, was so that I could persuede my buddy into getting beyond the Weasel Pro. After seeing my Devastator fly, he litterally whipped out cash right on the slope.. It "was" my best flying plane.. ~~Thread for my first Devastator~~ ~~Link to a video of my first Devastator~~ After talking with Justin(owner Edge-RC) and ordering up some more Devastators, he decided he would make a true sloper from the E-planform and change up a few things. It now has a center fin, and IMO a MUCH improved spar system. A few notes.. ~ This is a wing in the prototype stages and availibility could be a moderate wait. Justin is a busy man and don't expect it in a week if you order one.. Few weeks minimum probably. It's worth the wait... ~ I will be adding a few things which are not in the "kit" and will try to note them as I progress with the build. Justin may chime in also and add some info, hopefully.. Can't wait to get this thing done and bust some more "grass skimming ACRO DS"... Such a great handling plane. Can't say it enough.. I am using Goop in this build as my target weight is 27-30oz, and I want STRENGTH. Nothing compares to Goop in all out EPP strength but if you want a slightly more delicate stucture, and about a 3 ounce lighter AUW, I'd go with PU glue... PU is great but becomes brittle, and from my experience, won't take a "shock load" like Goop.. Building with Goop takes time but it's worth it IMO.. -Don Day one... Attached Thumbnails Clean the core's with a scrap piece of EPP.. 64.4 KB · Views: 866 Sand spar slots so the spars will fall into the slots. If they are tight it will distort the foil.. 73.0 KB · Views: 619 Sand the main spar the same way, and check fit. Main spar must also drop deep as the two bottom spars sit on top. Make sure they clear.. 68.2 KB · Views: 683 Goop panels together and tape.. 83.8 KB · Views: 714 Last edited by THUREN; Sep 26, 2006 at 01:28 PM.

Aug 29, 2006, 11:22 PM	#2
THUREN blah... Join Date: Jun 2005 Location: Santa Barbara, CA Posts: 2,925	Still day one.. I don't use the wing beds as they aren't usually 100% true. A good flat surface works great with this plane as there is zero washout etc. Just make sure to weight it evenly.. -Don Attached Thumbnails Goop in the main spar and be sure to push it deep enough so that the smaller panel spar can sit flush on top of it. 80.1 KB · Views: 708 make sure everything is straight and let sit overnite. I babysat the spar for about an hour to make sure it didn't push out.. 58.9 KB · Views: 676

Aug 29, 2006, 11:32 PM	#3
THUREN blah... Join Date: Jun 2005 Location: Santa Barbara, CA Posts: 2,925	Day two... This new kit has the 4 added spars which do not come in the E-version. I added ribbon spars to my first Devastator but they became soft after a few poundings. These a true heavy wall round spars and they do an awesome job of making a reliably stiff/strong wing... Attached Thumbnails Top and bottom spars touch in the center but are not joined in the kit. I cut a nail, bent it to shape, and wrapped it to the spars with CF tow, CA, and kicker. I would have used Kevlar if I could have found it.. 80.1 KB · Views: 708 clearance EPP for nail addition.. 67.9 KB · Views: 716 Fill slots with goop, smooth down.. 70.6 KB · Views: 648 lay some masking tape down.. Remove after about 1 hour for final dry... 68.6 KB · Views: 660 Set bottom spar in the same manner, and leave flat overnite.. 75.7 KB · Views: 666 Last edited by THUREN; Aug 29, 2006 at 11:56 PM.

Aug 29, 2006, 11:42 PM	#4
THUREN blah... Join Date: Jun 2005 Location: Santa Barbara, CA Posts: 2,925	Day 3.... The center fin mount plate design is 100% Justins, but I am flipping it over and adding a center carbon rod in the slotted plate. The fin mounting is hard to describe but you'll see as I go... It will be BOMB PROOF as the two plates will be locked, and then Gooped to the main spar on top of that. The entire assembly would basically have to be ripped out with the main spar!!! Attached Thumbnails Top centerfin plate with pre-cut location.. 69.0 KB · Views: 679 top plate Gooped in 51.6 KB · Views: 635 goop in bottom plate and check that slot in parallel to flight direction.. 49.2 KB · Views: 612 Scrape out Goop spoooooge. Do this every 30 min as it keeps spooooging for a bit.. Notice where the main spar is. Super strong center fin design ehhhh? 54.1 KB · Views: 672 press overnite.... 75.1 KB · Views: 634

Aug 29, 2006, 11:50 PM	#5
THUREN blah... Join Date: Jun 2005 Location: Santa Barbara, CA Posts: 2,925	Day 4..... Note..... On everything I goop I use the masking tape to leave a smooth surface, but it slows dry time substantially... I remove the tape after the goop gets "rigid" but not fully dry.... Attached Thumbnails You get the idea... The solid CF rod will be gooped in place.. 74.8 KB · Views: 693 I'm adding 2.5oz to the nose from the get-go.. Dug a slightly small hole for the lead chunk, heated the lead, grabbed with pliers and burned a perfectly shapped hole, and lined hole with some Goop.. 77.8 KB · Views: 624 Set on EPP cover, taped down.... 53.7 KB · Views: 609 pressed for the nite.. 81.9 KB · Views: 596

Aug 29, 2006, 11:52 PM	#6
THUREN blah... Join Date: Jun 2005 Location: Santa Barbara, CA Posts: 2,925	Day 5..... Attached Thumbnails CF trailing spars drying in goop.... Not in kit.. 75.0 KB · Views: 607

Aug 30, 2006, 12:00 AM	#7
willhaney on a vacation Join Date: Feb 2004 Location: Fountain Valley, California Posts: 11,245	Man this is looking sweet! Did you use flats on the trailing edge or tubes?

Aug 30, 2006, 02:06 AM	#8
-DoubleV- Registered User Join Date: Mar 2005 Posts: 845	im shocked!...... i was waiting to read something about 'calling me out' don, lol. V V

Aug 30, 2006, 03:00 AM	#9
hydrogin Registered User Join Date: Feb 2004 Location: Santa Barbara, CA Posts: 2,836	Don, I'm liking that black and green look. Very Xbox Lance

Aug 30, 2006, 09:15 AM	#10
WingmanDan fast chevron foam Join Date: Jun 2005 Location: The OC Posts: 659	Great job so far Don!! As you know, I recently built one of these DTV devastators myself. They are super fast for a chevron, like a halfpipe. AKA combatwing killers. But in a recent unfortunate "turn" of events (pun intended), it landed upside down on the fin I am going to redo the fin mount like yours (I have been waiting for this thread). I want to see how you end up at 30oz, mine is only 20! At 30 it probably cuts the air waaaaaay faster. Dan

Aug 30, 2006, 10:26 AM	#11
THUREN blah... Join Date: Jun 2005 Location: Santa Barbara, CA Posts: 2,925	willhaney, Flats for the sub TE. I like tubes also but I wanted this wing to be a combat basher also, and thin-wall tubes tend to split. Vic, LOL!!! I'll race ya' on the frontside but you can keep the DS record YO! Allthough these Devastators DS great(first plane I "pulled" an inverted lap with), they are more of an aerobatic close in DS'er and not the ba!!'s out wide lap screamer. Probably could be a wide lapper with some more weight but ehhhhh... Lance, Xbox? Is that some sort of video game gizmo? Dan, My first Dev came out at 24oz and I was trying to be a "little" conservative with weight. I used PU glue and CA a lot on that one but Goop is so much heavier, I'll be glad if this one says under 30oz. At 24oz my last one could float in light air and SCREAM at the same time. I want this one to be a serious speed demon in medium lift and a few more ounces shouldn't hurt the light air performance. At 20oz your's must fly on NOTHING!! -Don

Aug 31, 2006, 10:20 PM	#12
THUREN blah... Join Date: Jun 2005 Location: Santa Barbara, CA Posts: 2,925	saaaaaa mmmmorrrrrrrree progress.. 16oz now... Hmmmmm. lets take a guess...... Receiver........................... 1oz elevons........................... 1oz moderate/heavy tape job.... 3oz center fin assembly............ 2oz ultracoat......................... 1oz Thinned Goop.................... 2oz linkages, hinge tape, etc..... 1oz 27oz....... We'll see!!!! Attached Thumbnails Split a 2300mah NiMh brick pack and sunk it in, touch o' goop.. Dremel'd out a receiver bay.. 54.5 KB · Views: 624 Dremel out bay's for HS85MG's. I am SICK of digging out servos/wires, so I am gluing in an extension right at the servo for future ease of repair.. 83.1 KB · Views: 614 Servo is fed from the bottom so the long control horn doesn't protrude too high from the top. 68.6 KB · Views: 559 Servo flush with the bottom.. 57.0 KB · Views: 537 16oz allready!!! 49.6 KB · Views: 586

Sep 01, 2006, 09:07 AM	#13
WingmanDan fast chevron foam Join Date: Jun 2005 Location: The OC Posts: 659	Don, sweet techniques! I especially like how you split the battery, I had trouble fitting mine around the spars but didn't think of splitting it like that. I am anxious to know your final CG and throws. As I mentioned before, I have trouble with mine tip stalling in the turns... I even tried taping on winglets instead of the center fin but it did the same. Maybe mine is too light, I weighed it yesterday and it's only 17oz!!

Sep 01, 2006, 11:44 AM	#15
ajroahkni PWP! Join Date: Oct 2002 Location: Makawao, HI Posts: 3,660	don-got-skillz-dot-com This is such an awesome, clean install. Enjoying your work! John

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