RE: Sig Somethin' Extra advice
Ditto with the TT46 Pro. My kit built SSE flies great with this
motor swinging an APC 11.5 X 4 prop.
A 12 X 4 would probably give a bit better verticle but there is
no quite enough ground clearance using the stock landing gear.
So the 11.5 X 4 is the best bet.
Mike Hammer