2 stroke		4 stroke*		Gas**	Aircraft Weight (lbs)
(cu-in)	(cc)	(cu-in)	(cc)	(cu-in)	(scale aircraft)
0.40	6.55	0.53	8.74	10.00
0.46	7.64	0.61	10.05	11.31
0.61	10.00	0.81	13.33	15.00	6-9
0.75	12.29	1.00	16.39	18.44
0.90	14.75	1.20	19.66	20.23	10-12
1.00	16.39	1.33	21.85	24.58
1.20	19.66	1.60	26.22	30.00	13-15
1.40	22.94	1.87	30.59	34.41
1.60	26.22	2.13	34.96	40.00	16-19
1.80	29.50	2.40	39.33	44.25
2.00	32.77	2.67	43.70	50.00	18-25

* 4 stroke engines are approximately 30% larger in displacement (cc’s) than 2 strokes of equivalent power and can swing larger props.

** Gas engines are approximately 50% larger in displacement (cc’s) than 2 strokes of equivalent power. Use the manufacturers recommended props.

Always check your models power requirements.