Prop Chart For Two-Stroke Engines

Alternate Propellers Starting Prop
Engine Size

5.25 x 4, 5.5 x 4, 6 x 3.5, 6 x4 , 7 x 3 6 x 3
.049

7 x 3, 7 x 4.5, 7 x 5 7 x 4
.09

8 x 5, 8 x 6, 9 x 4 8 x 4
.15

8 x 5, 8 x 6, 9 x 5 9 x 4
.19 - .25

9 x 7, 9.5 x 6, 10 x 5 9 x 6
.20 - .30

9 x 7, 10 x 5, 11 x 4 10 x 6
.35 - .36

9 x 8, 11 x 5 10 x 6
.40

10 x 6, 11 x 5, 11 x 6, 12 x 4 10 x 7
.45

10 x 8, 11 x 7, 12 x 4, 12 x 5 11 x 6
.50

11 x 7.5, 11 x 7.75, 11 x 8, 12 x 6 11 x 7
.60 - .61

11 x 8, 12 x 8, 13 x 6, 14 x 4 12 x 6
.70

12 x 8, 14 x 4, 14 x 5 13 x 6
.78 - .80

13 x 8, 15 x 6, 16 x 5 14 x 6
.90 - .91

15 x 8, 18 x 5 16 x 6
1.08

16 x 10, 18 x 5, 18 x 6 16 x 8
1.20

18 x 8, 20 x 6 18 x 6
1.50

18 x 10, 20 x 6, 20 x 8, 22 x 6 18 x 8
1.80

18 x 10, 20 x 6, 20 x 10, 22 x 6 20 x 8
2.00

here is a chat i hope it help every one.