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Old Jul 10, 2012, 04:28 PM
Sure it'll work
Flyextreme's Avatar
United States, CA, Torrance
Joined Nov 2005
4,272 Posts
So what is it, that's in the box?
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Old Jul 10, 2012, 04:30 PM
Chess club geek with wings
blunight's Avatar
United States, FL, Cape Coral
Joined Aug 2008
1,060 Posts
It may be "old school" but I'm old and I also like pink planes...what's it called and where did you get it?!
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Old Jul 10, 2012, 04:42 PM
Sure it'll work
Flyextreme's Avatar
United States, CA, Torrance
Joined Nov 2005
4,272 Posts
Quote:
Originally Posted by blunight View Post
It may be "old school" but I'm old and I also like pink planes...what's it called and where did you get it?!
Zackly!
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Old Jul 10, 2012, 05:04 PM
ground penetration specialist
Nathan Schmoekel's Avatar
USA, MI, Grand Rapids
Joined Apr 2007
1,819 Posts
It's called the Fire Fly, it's not widely available yet
There are only three or four in existence right now. They are testbeds for working out a one-piece fuselage version of the design.....although time will tell if that's actually any lighter, mostly just a little easier to build for the end-user.

One has been built with a pair of 9gram servos and one 6g for the elevator, running on a single LiPo cell the all up weight was 7.6oz
BUT this is not a corner cutting, stupid light DLG... it's a revisit of older designs like the Super Gee, but rearranged, a bit and built with newer materials and methods. The wing, for instance, is a Zone-2 based foil with a mid-aspect forward swept planform.

Mine is actually just about built, I have all the photos taken, but need to organize them and get to typing. I have a two cell and BEC going in it right now, it's going to weigh 8.5oz for the first flights. When a certain package arrives I'll convert to a single cell and booster; that will drop her well below 8oz.
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Old Jul 10, 2012, 05:40 PM
Dub Cult.
Long Island NY
Joined Feb 2011
95 Posts
Next purchase for sure.
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Old Jul 10, 2012, 07:00 PM
Hey was that a Thermal ????
Joined Nov 2009
2,448 Posts
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Old Jul 10, 2012, 08:32 PM
Registered User
Congress, AZ
Joined Sep 2001
4,917 Posts
What is the wing area?
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Old Jul 10, 2012, 08:48 PM
Sure it'll work
Flyextreme's Avatar
United States, CA, Torrance
Joined Nov 2005
4,272 Posts
Well, if they are not available, I gotta have one for sure.
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Old Jul 11, 2012, 01:32 AM
Jim C
ShadowFalken's Avatar
Joined Sep 2009
1,473 Posts
More dead butterflies?!
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Old Jul 11, 2012, 07:45 AM
ground penetration specialist
Nathan Schmoekel's Avatar
USA, MI, Grand Rapids
Joined Apr 2007
1,819 Posts
Quote:
Originally Posted by GaryO View Post
What is the wing area?
315 ish square inches.
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Old Jul 11, 2012, 08:45 AM
ground penetration specialist
Nathan Schmoekel's Avatar
USA, MI, Grand Rapids
Joined Apr 2007
1,819 Posts
Ok, guess it's time for a bit more....
This project started with a question.... Why are one piece fuses lighter than two piece fuses?? Simple answer...Ideal distribution of mass and lack of redundant material. SO.... The elephant in the room is the boom-pod tenon overlap! Not only is it double thick and heavy, but it's AFT of CG....That's not where you want extra weight, and that's the primary place where one piece fuses are winning the weight distribution battle.

That lead to a simple stroke of genius....move the boom tenon under the wing. It made the most sense to use the double thick tenon area as a wing support...the strength is already there, plus the mass of the tenon overlap is moved forward!

Admittedly, these are not completely new ideas. All you need to do is go back a few years and look at the two piece high-pylon DLGs, like the Super Gee; but their weak point was the pylon. Because of the mass hanging so far below the wing, the wing mount had to withstand a huge twisting side load during launch....so how to mount the wing???

Hey, the B-3 mounts the wing right to the boom.....SO mix in a little red-neck B-3 style wing mount done with aluminum screw posts and VIOLA! Now we don't have to worry about breaking the a wing pylon! Which further means there are no worries about ballast weight twisting the fuse off the wing. The ballast is even contained within the tenon overlap area, so ballasting heavy is not an issue

Now, the only structural advantage a one piece fuse has is being able to shape the boom oval... which is cool, but perhaps a bit overrated I suppose you could still argue that a wing saddle supports the wing better, but no issues with the screw posts so far.... even using nylon screws! If things were moving and twisting the screws would surely give out.

Well enough babble... MORE PICS
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Old Jul 11, 2012, 05:17 PM
let's FLY!
JimZinVT's Avatar
United States, VT, Castleton
Joined Dec 2007
2,086 Posts


Dumb question #1: Is that screw post custom-bent, or do they sell them with a curved head?
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Old Jul 11, 2012, 06:16 PM
Now fortified with carbon
DLGjunkyard's Avatar
Canada, ON, Puslinch
Joined Apr 2010
2,718 Posts
Quote:
Originally Posted by JimZinVT View Post


Dumb question #1: Is that screw post custom-bent, or do they sell them with a curved head?
http://www.rcgroups.com/forums/showthread.php?t=1666627
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Old Jul 11, 2012, 08:30 PM
ground penetration specialist
Nathan Schmoekel's Avatar
USA, MI, Grand Rapids
Joined Apr 2007
1,819 Posts
OOPS.... somebody made a connection will the haters come out now?

But even without fancy jigs, it's not that tough to bend them either Just clamp the edge you need to bend in a vice and tap it with a hammer / screwdriver combo till you get a good angle...then flip it and repeat Perfection of the angle that meets the mounting area is not necessary, CA fills the gaps and inhibits movement...the wrap further distributes the stress. No movement, no wear, no issues
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