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Old Feb 23, 2005, 11:27 AM
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High Speed Sparless Epp Concrusher

Hey guys,

Since the Nucleus, I decided to created a new epp wing to replace my thicker heavier zipper, using the same equipment.

Objectives:
Sparless
lower drag
lighter
No flutter to 400W or more
Press fit countersunk level batteries
The option the run all wires between the top and bottom layer of the airframe.
1.3lb EPP
integrated non-balsa elevons, not taped on, pre-beveled
motor options: 2015-5400, or 020 4,5 turn, 3 turn mega etc
Battery options, 8-12 GP 1100's, 3s 1320, 3s TP2100, and others
Pre-cut motor socket, pre cut servo holes
Floaty, glides well, awesome flare outs, NO FLUTTER
NOT Hotwired
Airframe joins top/bottom , not left/right, using super77, not goop or hotglue.
No bad tip stalling al low speed.

Kevin at Viper Hobbies estimated the speeds at 130MPH with just a 3s TP2100 and 4 turn astro 020.

I would elaborate more but IE crashed once on me already after typing all of this.

Less talk more pix and Vids! Love it or hate it?

Justin in AZ
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Old Feb 23, 2005, 11:30 AM
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more pix
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Last edited by airsnyper; Feb 06, 2007 at 11:57 AM.
Old Feb 23, 2005, 11:34 AM
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elevons.
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Old Feb 23, 2005, 11:45 AM
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the gold one, my friend is running a 2025-4200, 4.2 prop, and 3s 2100TP
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Last edited by airsnyper; Feb 06, 2007 at 11:58 AM.
Old Feb 23, 2005, 11:48 AM
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Dallas Texas
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That looks great, a beautiful shape, and nice finish work too. I would love to see it with a cockpit canopy area attached, or colored in for more scale appearance. The pilot needs to be able to see out well for those 130 mph blasts 2 feet off the deck. I would deffinitely try to build this if you would post some plans please, as well as some instructions. The close ups of the finish look very nice too, is this iron on covering.
Thanks for showing us your great work.
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Old Feb 23, 2005, 11:57 AM
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countersunk TP2100 3s in the prototype concrusher, some wrinkes from nose ins, when attaining cg, no damage other than the wrinkles, cg acquired, flys great!
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Last edited by airsnyper; Feb 23, 2005 at 01:01 PM.
Old Feb 23, 2005, 11:59 AM
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SPARLESS BABY!

Holding near wingtip, fully loaded with 020, tp2100 3s, servos recevier etc...
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Old Feb 23, 2005, 12:03 PM
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rockin',

thank you.

I wanted to do a cockpit, but I just couldn't ignore the fact that it was just more drag, I may make one available for those who wish for one as yourself.

As far as plans go, it is not a build up plane, it is contoured from an epp foam block. So unless you have a CNC machine, I don't know if the Gcode file would be of much use to you.

I plan on kitting these, like the Nucleus.

Justin
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Old Feb 23, 2005, 12:11 PM
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Quote:
Originally Posted by airsnyper
more pix

Thats v.cool. Where are the vids ?


Digsy
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Old Feb 23, 2005, 12:17 PM
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Digsy

Vids will be shot tommorrow, and posted same day.
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Old Feb 23, 2005, 12:26 PM
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inside bottom half of a previous prototype, I used carbon fiber tape in the back ,but, ended up omitting it in later versions as it is not required

What's cool is that IF you wanted spars, you could runn the on direction in the bottom half inside, and ANOTHER direction in the top inside, the join, for crazy power with heavy bats, but so far, even with 12 GP1100's...NO spars needed!


and joining the top and bottom halves after super 77.....
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Old Feb 23, 2005, 12:27 PM
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That is beautiful. Quite original too. looks like a re-entry vehicle from a sci-fi novel. Or maybe a microjet on steriods.

just a thought, since you are contructing it via a sandwich method, it may be possible to wiggle in some micro retracts. what is now a thread, soon ,may be a legend.

bing
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Last edited by BING!; Feb 23, 2005 at 12:33 PM.
Old Feb 23, 2005, 12:36 PM
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Bing,

thank you, funny you mention gear, here is a 1" smaller early version prototype, running a 2015-4200 3x3 prop, and 3s TP 1320's, with fixed landing gear!

Since then, it's got the high HP equipment, and is 1" larger in size, with fine tuning to the thickness of the foil.

There is a vid of it in there.

My new EPP NON-hotwire cut wing!
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Old Feb 23, 2005, 05:59 PM
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That thing was bullet. Nice vid.

bing
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Old Feb 23, 2005, 06:59 PM
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Near Elmira Regional, New York, United States
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are you going to kit this aircraft?

-Nik
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