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Speed,Combat,Scale,Racing => Combat => Topic started by: Chad Hill on October 28, 2010, 06:50:31 AM
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My Stooge mounted on sawhorse. Scrap metal motor mount in photo # 3 keeps plane from sliding after line tension is applied (handle picked up). It has a small weight on the bottom to keep it in place. Stooge based on design I saw Howard Shenton demo in Huntersville a year or two ago.
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That is got to be the most thoughtout f2d stooge.. nice job! H^^
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Very nice but way to compli-a-cated for me...lol ~> n~
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Depends on had bad you want to fly. I like the idea. H^^
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Chad: do you have any drawings of the parts available?
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Gary,
This is the main part. I found that all the Russian F2D and Fast ARF's had very similar airfoils in the LE area. The "hook" at the top fits snugly over them. I used a 1" dowel to connect the pieces (the template wrongly shows 3/4"). There are small weights towards the front of the "ear" to help it fall when it is released by the pull pin.
It took about as much time to build as a Voodoo. The lauches are pretty smooth, unlike some stooges where the plane is pulled out of a sleeve. The rails that stick out 6" to the front are important for a controllable release. The top photo shows a "wing shim" at each end of the board to block up the wing as the airfoil gets thinner nearer the wingtips. This stooge can launch Speed Limit, F2D or Fast birds, although I have not tried a Fast yet. That would probably require anchoring the stooge or at least adding substantial weight to the sawhorse. I built it strong, out of 1/2" seven-ply plywood (from Hobby Lobby). Cost a bit, but should last a long time, and is heavy. The metal sawhorse adds weight, too.
Don't forget to step backwards after taking off, otherwise you may have an obstacle to deal with later on ;)
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Excellent! thank you, Chad.
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Gary, for what it's worth I used a 3/8" diameter pin with a spring loaded retaining socket ball for the "pull pin". I epoxied a 3/8" metal tube for it to slide thru in the wooden part of the stooge (see picture # 2 at the top). That makes sure the pin can't vibrate out because of a running motor. Available at any hardware supply.
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What's the function of that little tab sticking up front-and-center?
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First post says it is to keep the plane from sliding toward you when tension is applied to the lines. I am gald you made me reread as I wondered how he kept it from catching the tail of the plane. It dawned on me when he said there was a weight on it.
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First post says it is to keep the plane from sliding toward you when tension is applied to the lines. I am gald you made me reread as I wondered how he kept it from catching the tail of the plane. It dawned on me when he said there was a weight on it.
Ah...I see. That was my concern also, that the tail might hang up on it. but it just pivots out of the way when contacted by the tail.. Good engineering.
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If you want to make it even more complicated and neat you can use a cheap RC set to operate the mechanism. Just make sure to spring load the release lever so it doesn't activate before you get the handle set.