RC Prop Chart

Propeller Chart

Choose The Right Propeller
While all engines produce power the Propeller is essential to transmit this power. A more efficient propeller will transmit more power to the air. It would be fair to say that these recommended props are often much larger than those typically used in the USA but this helps significantly with noise reduction and therefore we will go with a larger prop. The engines will not bog down with these props, they just won't quite develop all the power they could. Though to be fair we do overpower anyway. Prop sizes are only slightly above US recommendations. If you field is noise sensitive (as many are) then head for one of the large sizes. These figures are merely estimates - do not take them as gospel. They are merely a rough guide to get you started.

Note: This Chart was Hijacked from the UK. Please note the disclaimer above!!!

		2-Stroke Glow Engines
Engine Size	Ideal Prop Size	Propeller Size Range	Ideal RPM Range
0.10	7x4	7x4~6, 8x4	14000~16000rpm
0.15	8x4	7x5~6, 8x4~6	14000~16000rpm
0.25	9x5	9x4~6, 10x4~5	12000~15000rpm
0.32-0.36	10x5	9x6~8, 10x5~6, 11x4~5	12000~15000rpm
0.40	11x5	10x6~8, 11x5~7, 12x5~6	11000~12000rpm
0.46	11x6	10x7~9, 11x6~8, 12x5~7	10000~12000rpm
0.53	11x7	10x8~10, 11x7~9, 12x6~8	10000~11000rpm
0.61	13x6	12x8~10, 13x6~7, 14x5~6	9500~11000rpm
0.75	13x7	12x9~11, 13x7~8, 14x6~7	9500~10500rpm
0.91-1.08	14x6	13x10~11, 14x6~8, 15x6~8	9000~10000rpm
1.20-1.35	16x8	15x8~10, 16x8~10, 17x8	8500~9500rpm
1.40-1.80	18x8	17x8~10, 18x8~10, 20x6~8	8000~9000rpm
2.10	20x10	20x10, 22x8	8000~8500rpm
		4-Stroke Glow Engines
Engine Size	Ideal Prop Size	Propeller Size Range	Ideal RPM Range
0.26-0.30	10x6	10x5~7, 11x4~5	10000~11000rpm
0.40-0.45	11x6	11x6~7, 12x5~6	10000~11000rpm
0.48-0.56	11x7	11x7~8, 12x6~7, 13x5~6	10000~11000rpm
0.63-0.72	12x7	12x7~9, 13x6~7	10000~11000rpm
0.80-0.91	14x7	13x8~11, 14x7~9, 15x5~7	10000~11000rpm
1.00-1.20*	14x8	14x7~8, 15x6~10, 16x6~8	9000~10000rpm
1.40-1.50**	16x8	16x8~12, 17x8~10, 18x6	8500~9500rpm
1.80-2.00	17x8	16x10~12, 17x8~10, 18x8	8000~9500rpm
2.40	20x8	18x10~12, 20x6~8	7500~8500rpm
2.70	20x10	20x8~12, 21x8~10	7500~8500rpm
3.00-3.20	21x10	20x10~12, 21x8~10, 22x8	7500~8500rpm
		Gasoline Engines
Engine Size	Ideal Prop Size	Propeller Size Range	Ideal RPM Range
1.40-1.80	16x8	16x8~10, 17x8~10, 18x8	8500~9500rpm
40cc	20x8	18x10~12, 19x10, 20x8~10	6500~7800rpm
45cc	20x10	20x10~12, 21x8~10, 22x8	6000~7500rpm
50cc	21x10	20x12, 21x10~12, 22x8~10	6000~7200rpm
60cc	22x10	22x10~12, 24x8~10, 26x8	6000~7200rpm
75cc	24x10	24x12, 26x10~12	6000~6800rpm
100cc	26x10	26x10~12, 28x10	6000~6500rpm
150cc	32x12	30x10~12, 32x10~12	5500~6000rpm
200cc	34x11	32x12~14, 34x10~12, 36x10	5000~6000rpm