RE: Specs on a Goodrich Extra 300S
Ok...
C.G. 110mm from the LE of the wing CENTERLINE ( not measured at the fuse, rather at the wing center ).
Throws
Aileron 10mm
Elevator 12mm
Rudder 15mm
IMHO these are too conservative.
I maxed out my high rates and then set my low rates to give me the above.
That way I could start out with the recommended throws and quickly switch up or down to check the higher rates and find what I was most comfortable with... it snaps easily on high rates so be careful not to overdo it... however the wing loading is low..
I used a low rate Expo of 30% for ailerons and elevator and 15% for rudder.
I used a high rate Expo of 50% for ailerons and elevator and 25% for rudder.
It flies fine, but I have not had a chance to fully wring it out as I'm still breaking in the engine.
The wings are large enough that tip stalling is not as big an issue.