Thread: Discussion Enlarged Sparky-114 "
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Old Apr 30, 2012, 07:40 AM
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Sparky looks like an Anteater...He has a long snout,like me.
I believe it was originally designed for rubber power..Since elastic doesn't weigh so much,the aircraft nose needed to be 'way long to balance the tail assembly.

I'm leaving it long. Typically a 1/4 scale Cub's C.G.is 15-17" from the prop.This one is 25".But it ain't gonna be rubber powered.I want to use an O.S.91 4 cycle as the motive source.
A lack of engineering savvy requires me to arrive at solutions differently than most folks. I'm thinking,' if I hang an engine out there,it's going to be nose heavy'!
Much discussion ensued,and the idea of installing the engine in the cockpit originated,with an extension shaft to the prop.Roughly 25" of extension shaft!!!

Boy did the cages start rattling then ! -can't-won't-don't-go for it! I chose the last,for two reasons.I have a P-39/P-63 envisioned in future,so let's encounter the pitfalls now,and continue along,or scrap the whole idea.
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