Hi folks got another question,

My busa sopwith calls for side and down thrust when I install the engine.
I have built a lot of wwll aircraft and always set them up at 0 degrees to the centerline. and set the wing to zero also if it was a fully symetrical wing...and slightly neg if it was a semi symetrical wing.

This is my first quarter scale bipe and I was wondering if I really need that side and down thrust.

Also I was wondering has anyone tried to glue a piece of hard rubber to the firewall to absorb vibration.

My zenoah has a large flat surface that mounts against the fire wall.... seems to me that a piece of hard rubber about 1/8 inch thick and the size of the fire wall would help.

I don't know just asking the experts.