Montague
Posts: 4632
Joined: 4/19/2002
From: Laurel, MD,
Status: offline
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Kelly and I talked about kitting the Mongoose. But neither of us has the time or gear to make up kits in any kind of quanity. They aren't hard to make, but it does take time to hand cut out everything. The fuse cutouts were done with a jigsaw, for example. And there are 5 additional bits that have to be cut for each fuse. The engine plate, a cross brace in the wing LE area, 2 elevator servo mounts, and a bulkhead behind the tank (not shown in that picture, it was added later). The bulkhead and engine plate were cut on Kelly's milling machines. We cut a small stack for our planes and some spares, but we aren't geared up for making piles of these parts for kitting.
The wing cores were cut on my home-brew gravity-feed foam cutter, I don't have a CNC foam cutter.
If there is real interest in a kit, and we can find someone with CNC gear (or is willing to do the work manually) to do the cutting, either as a sub contractor or someone who'd do the kits under license, we might be willing to go that route.
Glen, thanks, I really had that particular one zero'd in quite well. I flew all 6 rounds in Bloomfield on 1 airframe, and 1 prop. I only had a couple of "wing slap" mid-airs, no damage to anything, some amazing luck considering how often I usually run in to other airplanes.
The sub fin is there to increase vertical area. Having all your vertical area above the horizontal stab isn't the end of the world, but the plane will fly better if you get some below the stab as well. I think the biggest thing is that when you're really cranked in to a hard turn, the wake of the horizontal starts to blanket the vertical fin, and you loose some yaw stability, and loss of yaw stability results in a snaproll. If you get more stab in "clean" air, you actually can turn tighter before snapping out.
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Kirk Montague Adams
RCCA 560
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All Forums >> RC Airplanes >> RC Combat >> RE: Show us your home-brew combat designs. 
RE: Show us your home-brew combat designs. - 
I think that plane will be a screamer once you get it fine tuned. The CG should be set at 20%, keep trying wraps of solder until you get it more stable, then evaluate if you want to extend, or redo the engine mount. The flat sheet 3/16" x 1.5" elevons will improve your fine control.
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! What is it made out of?
