Propeller dimensions

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• 2-Blade folding propeller
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• Propeller dimensions

Propeller dimensions

Please be aware:

• Unlike the general perception, even as little as 8-10 mm of free space between propeller and hull will be fine on most boats.
• Due to the nature of the propeller construction, folding blades are positioned further aft than a fixed propeller (see hub length) and thereby leave more space between shaft and hull.

 

View dimensions:

Hub length, ISO standard
Hub length, SAE standard
Hub length, IMP standard
Blade length
Propeller diameter

How to calculate the total length of the folded propeller:

Hub length, ISO standard

Hub length (A), 2-blade

22 mm shaft, 1:10 taper = 88 mm ≈ 3.5"
25 mm shaft, 1:10 taper = 110 mm ≈ 4 3/8"
30 mm shaft, 1:10 taper = 130 mm ≈ 5 1/8"

Hub length (A), 3-blade up to 22"

25 mm shaft, 1:10 taper = 120 mm ≈ 4 47/64"
30 mm shaft, 1:10 taper = 136 mm ≈ 5 23/64"
35 mm shaft, 1:10 taper = 146 mm ≈ 5 3/4"
40 mm shaft, 1:10 taper = 156 mm ≈ 6 9/64"
45 mm shaft, 1:10 taper = 196 mm ≈ 7 23/32"

Hub length (A), 3-blade >22" and 4-blade6

35 mm shaft, 1:10 taper = 148 mm ≈ 5 53/64"
40 mm shaft, 1:10 taper = 157 mm ≈ 6 3/16"
45 mm shaft, 1:10 taper = 196 mm ≈ 7 23/32"
50 mm shaft, 1:10 taper = 206 mm ≈ 8 1/8"


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Hub length, SAE standard

Hub length (A), 2-blade

3/4" shaft, 1:16 taper = 100 mm ≈ 4.0"
7/8" shaft, 1:16 taper = 115 mm ≈ 4.5"
1" shaft, 1:16 taper = 130 mm ≈ 5 1/8"
1 1/8" shaft, 1:16 taper = 142 mm ≈ 5 19/32"
1 1/4" shaft, 1:16 taper = 157 mm ≈ 6 3/16"

Hub length (A), 3-blade up to 22"

1" shaft, 1:16 taper = 136 mm ≈ 5 23/64"
1 1/8 shaft, 1:16 taper = 146 mm ≈ 5 3/4"
1 1/4" shaft, 1:16 taper = 156 mm ≈ 6 9/64"
1 1/2" shaft, 1:16 taper = 194 mm ≈ 7 41/64"
1 3/8" shaft, 1:16 taper = 177 mm ≈ 7"
1 3/4" shaft, 1:16 taper = 210 mm ≈ 8 9/32"

Hub length (A), 3-blade >22" and 4-blade

1 1/2" shaft, 1:16 taper = 202 mm ≈ 8"
1 3/4" shaft, 1:16 taper = 210 mm ≈ 8 9/32"
2" shaft, 1:16 taper = 275 mm ≈ 10 53/64"


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Hub length, IMP standard

Hub length (A), 2-blade

1" shaft, 1:12 taper = 110 mm ≈ 4 3/8"
1 1/4" shaft, 1:12 taper = 129 mm ≈ 5 5/64"

Hub length (A), 3-blade up to 22"

1" shaft, 1:12 taper = 116 mm ≈ 4 37/64"
1 1/4" shaft, 1:12 taper = 136 mm ≈ 5 23/64"
1 1/8 shaft, 1:12 taper = 120 mm ≈ 4 47/64"

Hub length (A), 3-blade >22" and 4-blade

1 3/4 shaft, 1:12 taper = 196 mm ≈ 7 23/32"

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Blade length

Blade length (B), 2-blade propeller:

12" = 139 mm ≈ 5 31/64"
13" = 152 mm ≈ 6"
14" = 165 mm ≈ 6.5"
15" = 177 mm ≈ 7"
16" = 190 mm ≈ 7.5"
17" = 203 mm ≈ 8"
18" = 215 mm ≈ 8 15/32" 
 

Blade length (B), 3-blade propeller:

14" = 151 mm ≈ 6"
15" = 163 mm ≈ 6 27/64"
16" = 176 mm ≈ 6 15/16"
17" = 189 mm ≈ 7 29/64"
18" = 202 mm ≈ 7 61/64"
20" = 227 mm ≈ 8 15/16"
22" = 282 mm ≈ 11 7/64"
 

Blade length (B), 4-blade propeller:

25" = 275 mm ≈ 10 53/64"

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Propeller diameter

12" = 305 mm
13" = 330 mm
14" = 356 mm
15" = 381 mm
16" = 406 mm
17" = 432 mm
18" = 457 mm
20" = 508 mm
21" = 533 mm
22" = 559 mm
24" = 610 mm (3-blade propeller)
24" = 625 mm (4-blade propeller)
25" = 635 mm

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