Engine for R/C Helicopter
Model#	Dimension of engine
	[mm]
	A	B	C	D	E
SS50-H Ring TN	44.0	17.5	33.8	50.0	UNF1/4-28
35X-H TN	38.0	15.0	30.4	46.0	UNF1/4-28
35X-H Ring TN	38.0	15.0	30.4	46.0	UNF1/4-28