Model Forum / Radio Controlled / Helicopters / March 2007

Hello Adrian

If the CG is not at the mast it'll still fly just fine, and it's not really
critical. But a small amount of cyclic trim will be needed. That's
inefficient - but not seriously. It'll run a tiny bit more smoothly with
zero cyclic trim and the CG right on the mast. I sometimes epoxy a bit of
lead into the extreme front of the canopy to get the CG to the mast - when
the tank is half full! The fuel tank is never really on the CG and this of
course means the CG moves as fuel runs out....

Best wishes

Malcolm