SUGGESTED PROPELLER SIZES

Suggested propeller sizes are given in the table. Note that your ideal propeller diameter, pitch, and blade area should be chosen by trial and error depending on your particular engine type, model size, and usage. Even if propellers have the same size, their properties vary considerably depending on the manufacturer. Please select blades for proper balance on the left and right.

Never touch, or allow any object to come into contact with, the rotating propeller and do not crouch over engine when it is running.

TWO-STROKE ENGINES

DIA X PITCH

	Running-in	Trainer / Sport
10LA	7x4	6.5-7x3-6,8x4
15LA	8x4	7x5-6,8x4-5
25LA	9x5	9x5-6
40LA	11x5	10x6-7,10.5x6,11x5-6
46LA	11x6	11x6-7
65LA	12x6	12x7-8,13x6-8
	Running-in	Aerobatic / Sport
15LA-S	8x4	8x4-6
25LA-S	9x6	9x6,10x5
40LA-S	11x5	11x5-6
46LA-S	11x6	11x6-7,12x5-6
	Sport	Aerobatic
15CV-A	7x5-6,8x4-6,9x4	8x4-6
25FX	9x5-6,9.5x5,10x5	9x6,9.5x5
32SX	10x6,10.5x5,11x6	9x7-8,10x6
40FX	10x6,10.5x6,11x6-7	-----
46FX	10.5x6,11x6-8,12x6-7	11x8-10,12x7-9 (tuned silencer used)
50SX RING	11x6-10,12x6	12x7-9
61FX	12x6-8,13x6-7	12x9-11 (tuned silencer used)
91FX RING	15x8,16x6-8,17x6, 14x7(3blade)	13x11-13,14x10-11
108FSR RING(RN)(BX-1)	14x6-8,15x6-8,16x6,18x6	-----
140RX / 140RX-FI	Aerobatic 15x14-16,16x13-15	15x14
160FX RING	17x10-13,18x10-12	15x12-14,16x10-14, 16.5x10-13
160FX-FI	16x12-13,17x10-11,18x10-12	16x14,16.5x12-13, 17x12-13
BGX-1 RING(RN)	18x10-12,20x8-10	18x10-12,20x8-10

FOUR-STROKE ENGINES

Single-cylinder	Sport & Aerobatic	Trainer / Sport
FS-26S	9x6-7	9x6-7,10x6,10.5x6, 8x6(3blade)
FS-30S	9x6-7	10x4-6
FS-40S	10x7-7.5,11x6, 9x7(3blade)	10x7,10.5x6,11x7,12x5-6, 10x7(3blade)
FS-52S	10x9 -10,10.5x8-9,11x7-8	11x7-8,12x6,12.5x6
FS-70SII	11x8-9,12x7-8,12.5x6	13.5x8,14x7, 11x7(3blade)
FS-91SII/FS-91S II-P	11x11-12,12x10-12,13x9	13.5x8,14x7,15x6,16x6, 12x8(3blade)
FS-91SII-FI	12x10-12,13x9,14x7	15x6,16x6
FS-120S-E	13x11-12,14x10-11	15x9,16x6-7,18x5-6, 14x7(3blade), 15x8(3blade)
FS-120S III	13x11-13,14x10-11	15x8,16x6-7,18x5-6, 14x7(3blade), 15x8(3blade)
Twin & Multi-cylinder	Sport & Scale
FT-160 (Gemini-160)	16x6-8,18x6-8,20x6
FT-300 (Super Gemini-300)	18x10-14,20x8-11,22x8
FF-320 (Pegasus)	18x10-14,20x8-10,22x8
FR5-300 (Sirius)	18x10 -14,20x8-10,22x8