4 Stroke Prop Sizes

B FONT **Prop Chart (4 Cycle) FONT B

Engine Size
(cu. in.)

Starting
Propeller

Alternate
Propellers

.20 - .21

9-6

9-5, 10-5

.40

11-6

10-6, 10-7, 11-4, 11-5
11-7,  11-7.5, 12-4, 12-5

.45 - .48

11-6

10-6, 10-7, 10-8, 11-7
11-7.5,  12-4, 12-5, 12-6

.60 - .665

12-6

11-7.5, 11-7.75, 11-8, 12-8
13-5,  13-6, 14-5, 14-6

.80

13-6

12-8, 13-8, 14-4, 14-6

.90

14-6

13-6, 14-8, 15-6, 16-6

1.20

16-6

14-8, 15-6, 15-8, 16-8
17-6, 18-5,  18-6

1.60

18-6

15-6, 15-8, 16-8, 18-6
18-8,  20-6

2.40

18-10

18-12, 20-8, 20-10

2.70

20-8

18-10, 18-12, 20-10

3.00

20-10

18-12, 20-12

2 Stroke Prop Sizes

B FONT **Prop Chart (2 Cycle) FONT B

Engine Size
(cu. in.)

Starting
Propeller

Alternate
Propellers

.049

6-3

5.25-4, 5.5-4, 6-3.5, 6-4, 7-3

.09

7-4

7-3, 7-4.5, 7-5

.15

8-4

8-5, 8-6, 9-4

.19 - .25

9-4

8-5, 8-6, 9-5

.29 - .30

9-6

9-7, 9.5-6, 10-5

.35 - .36

10-6

9-7, 10-5, 11-4

.40

10-6

9-8, 11-5

.45

10-7

10-6, 11-5, 11-6, 12-4

.50

11-6

10-8, 11-7, 12-4, 12-5

.60 - .61

11-7

11-7.5, 11-7.75, 11-8, 12-6

.70

12-6

11-8, 12-8, 13-6, 14-4

.78 - .80

13-6

12-8, 14-4, 14-5

.90 - .91

14-6

13-8, 15-6, 16-5

1.08

16-6

15-8, 18-5

1.2

16-8

16-10, 18-5, 18-6

1.5

18-6

18-8, 20-6

1.8

18-8

18-10, 20-6, 20-8, 22-6

2.0

20-8

18-10, 20-6, 20-10,  22-6

Engine Conversion Sizes

B FONT **Engine Size Conversion Chart FONT B

.049 cu. in. = .8 cc

.61 cu. in. = 10.0 cc

.09 cu. in. = 1.5 cc

.80 cu. in. = 13.0 cc

.15 cu. in. = 2.5 cc

.91 cu. in. = 14.9 cc

.19 cu. in. = 3.1 cc

1.20 cu. in. = 20.0 cc

.21 cu. in. = 3.5 cc

1.50 cu. in. = 25.0 cc

.25 cu. in. = 4.1 cc

1.60 cu. in. = 26.2 cc

.29 cu. in. = 4.8 cc

1.80 cu. in. = 30.0 cc

.35 cu. in. = 5.7 cc

2.00 cu. in. = 32.8 cc

.40 cu. in. = 6.5 cc

2.40 cu. in. = 39.3 cc

.46 cu. in. = 7.5 cc

2.70 cu. in. = 44.3 cc

.50 cu. in. = 8.2 cc

3.00 cu. in. = 49.2  cc