ORIGINAL: yachty
I think i just worked it out in my little head, tell me if im wrong.
With the firewall back say 1/2" from normal then to keep the same thrust LINES i would need to mount the motor slightly HIGHER and slightly more LEFT than if it were in the plans position?
Steve
Thats it. It won't take much.
One of our guys built an old school kit, th plans showed a tube type receiver, and the plans called for 7 degrees right thrust. That's what he built in, but didn't move the motor mount centers. It kind of looked like a prize fighter that had his nose broke a few times to many. It flew well though.
Four strokes do sometimes present a bit ofa problem due to the carb being behind the engine. The Dave Brown Long mounts are good ones for cramped spaces, but you still have the extra "nose" haning out there. Some of the kit motor mounts, the two piece ones are probably the best for cramped spaces. You can usually swing the carb so it clears the lug and tuck it back between the mounts to give you some extra room.
Don