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Old 05-03-2005, 08:44 PM
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Default RE: Extreme Flight 87" Yak 54 - Build & Fly

At our altitude-- a 22x8 which turns 6500, will barely hold a hover on an early 14 lb H9 CAP - (a ZDZ40 on a small incowl muffler) - in word - it is nowhere near enough static thrust for the YAK
The cowl is not the real problem -if the engine sticks out enough .
Just not enough power .
Also-- You are not likely to balance the YAK with a small engine unless you move all servos up front .
To get one under or at 15 lbs - you will have to do some equipment shifting -or add ballast .