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Old Dec 03, 2005, 06:01 PM
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Delta's


I built a couple of delta's last week and figured I would share them with everybody. They have no airfoil and are built from 1/4" balsa, the balsa is about $7.00 and covering is about $5.00 and it can be built and flying very quickly. The orange one has 4 flights on it with a 7.2 volt speed 400 turning a 6x3 folder or a 5.5x5.5 graupner cam and a 3s tp 1320 pl. AUW for the orange is 16oz and 13oz for the yellow which uses the same battery but has a brushless(nippy 280 silver, I had it laying around and it's better than a speed 400), I have yet to fly the yellow because it was finished last night and was quite windy today. I expect to fly the yellow tomorrow and I will post how it went...Impact
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Old Dec 03, 2005, 06:46 PM
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more delta


my zagi from chile...
Old Dec 04, 2005, 09:04 AM
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Impact, is the leading edge just sanded to form a roundish type shape or is it beveled to like a 45 degree angle? Wing planform just a piece of balsa or is it in 2 pieces? Is it spar'd or strengthened in any way? What is wingspan?
Sorry to be with many questions. Does look like a quick build and I have some 400's and hs-81 servos sitting around doing nothing.

Dave...
Old Dec 04, 2005, 10:33 AM
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How about making plans available?
Old Dec 04, 2005, 05:01 PM
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I'm drawing up a plan that I will post here. I didn't fly the yellow one today because it was snowing and I hate belly landing in fresh powder....Impact
Old Dec 05, 2005, 08:18 PM
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Cool.....Even have some econokote to use for covering.
The only things I fly in the winter are models that have their electronics pretty much covered in case of snow getting in. Burned up a 30 amp esc last winter because water got in. And out went the magic smoke!

Dave...
Old Dec 05, 2005, 10:09 PM
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I'm thinking about some landing gear because I have to land on tar when there is snow. The plan will be done tonight. I going to try a 6V motor and see how that is, static with the 6V and 4.7X4.7 and 3s is about 23 amps so they won't last but a few minutes at that load but I have a bunch of them so I'm willing to burn up a few.....Impact
Old Dec 05, 2005, 11:40 PM
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Here's something to get going with, I'm sure that I have forgot things so feel free to ask as many questions as needed....Impact
Old Dec 06, 2005, 10:39 PM
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Thanks for the word doc!!! Gonna have to grab a sheet of 1/4 inch balsa. I have some but it is not going to be big enough.
I was planning on running a 400 6 volt w/8 cell CBP 1150's.

Dave...
Old Dec 06, 2005, 11:44 PM
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Great, w/8 cell CBP 1150 for battery it will be easy to balance properly I'm useing a thunder power 3s 1320prolite that weighs 3.2oz(or so) so I have to pack everything up in the front and that still puts me about 1/4" aft of the CG but I'm happy with the way it has been flying. The air frame is fairly weak so I covered it with something not to light( ultracote,oracover and some topflight monokote) the covering adds a lot of strength...I'm on here everyday so I can respone to questions pretty fast good luck with your build.....Impact
Old Dec 06, 2005, 11:58 PM
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With the speed 400(7.2) and a 6x4 master airscrew and 3s static draw is roughly 15 or 16 amps but with 5 minutes of WOT flying I land and the motor is cool so I'm thinking that it unloads a lot in the air(doesn't sound like it though) so now I've gone to a 6V sp400 which with the same 3s pack and a 6x3 cam folder it draws about 23 amps static, I'm thinking that it will unload and reduce the draw to something more realistic......Impact
Old Jan 07, 2006, 10:36 PM
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Well I have a ton of flights on the orange and the yellow I gave away as x-mas present. The orange is brushless now but only 80 to 100 watts and it's not to fast but it's enough to fly and have fun. I have a few other thing to try before my norvel .074 (300+ watts) finds it's way onto the plane and that should turn it into a missile....Impact
Old Jan 22, 2006, 10:17 PM
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Here is the latest delta. 198sqin, AUW 11oz with 115 watts. I flew it today and it was pretty quick, 60 to 70 mph would be my quess. Oh yes I'm going to call this one "The Fulcrum" ......Impact
Old Jan 22, 2006, 10:39 PM
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Excellent Delta!!! Plans? Airfoil?
Old Jan 22, 2006, 10:52 PM
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The wing is a flat plate and there is a rough plan with post #8 in this thread. A little bit more info can be found here; https://www.rcgroups.com/forums/showthread.php?t=468715 ....Impact


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