Marine Specialties, P. O. Box 19094, Houston, TX 77224-9094

(713) 468-6070 Phone (713) 468-6072 Fax

 

Miles per Hour at Given RPM with 0%, 10% & 20% Slippage

Part No. Diameter Pitch Shaft Size 1,000 8,000 9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000
                                             
  (Inch) (Inch) (Inch) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH) (MPH)
                                             
SS15 1.60 2.5 0.1875 2.37 18.9 21.3 23.7 26.0 28.4 30.8 33.1 35.5 37.9 40.2 42.6 45.0 47.3 49.7 52.1 54.5 56.8 59.2
      10% Slippage 2.13 17.0 19.2 21.3 23.4 25.6 27.7 29.8 32.0 34.1 36.2 38.4 40.5 42.6 44.7 46.9 49.0 51.1 53.3
      20% Slippage 1.89 15.2 17.0 18.9 20.8 22.7 24.6 26.5 28.4 30.3 32.2 34.1 36.0 37.9 39.8 41.7 43.6 45.5 47.3
SS20 1.72 2.6 0.1875 2.46 19.7 22.2 24.6 27.1 29.5 32.0 34.5 36.9 39.4 41.9 44.3 46.8 49.2 51.7 54.2 56.6 59.1 61.6
      10% Slippage 2.22 17.7 19.9 22.2 24.4 26.6 28.8 31.0 33.2 35.5 37.7 39.9 42.1 44.3 46.5 48.8 51.0 53.2 55.4
      20% Slippage 1.97 15.8 17.7 19.7 21.7 23.6 25.6 27.6 29.5 31.5 33.5 35.5 37.4 39.4 41.4 43.3 45.3 47.3 49.2
SS25 1.84 2.8 0.1875 2.65 21.2 23.9 26.5 29.2 31.8 34.5 37.1 39.8 42.4 45.1 47.7 50.4 53.0 55.7 58.3 61.0 63.6 66.3
      10% Slippage 2.39 19.1 21.5 23.9 26.3 28.6 31.0 33.4 35.8 38.2 40.6 43.0 45.3 47.7 50.1 52.5 54.9 57.3 59.7
      20% Slippage 2.12 17.0 19.1 21.2 23.3 25.5 27.6 29.7 31.8 33.9 36.1 38.2 40.3 42.4 44.5 46.7 48.8 50.9 53.0
SS30 1.90 3.0 0.1875 2.84 22.7 25.6 28.4 31.3 34.1 36.9 39.8 42.6 45.5 48.3 51.1 54.0 56.8 59.7 62.5 65.3 68.2 71.0
      10% Slippage 2.56 20.5 23.0 25.6 28.1 30.7 33.2 35.8 38.4 40.9 43.5 46.0 48.6 51.1 53.7 56.3 58.8 61.4 63.9
      20% Slippage 2.27 18.2 20.5 22.7 25.0 27.3 29.5 31.8 34.1 36.4 38.6 40.9 43.2 45.5 47.7 50.0 52.3 54.5 56.8
SS35 2.00 3.2 0.1875 3.03 24.2 27.3 30.3 33.3 36.4 39.4 42.4 45.5 48.5 51.5 54.5 57.6 60.6 63.6 66.7 69.7 72.7 75.8
      10% Slippage 2.73 21.8 24.5 27.3 30.0 32.7 35.5 38.2 40.9 43.6 46.4 49.1 51.8 54.5 57.3 60.0 62.7 65.5 68.2
      20% Slippage 2.42 19.4 21.8 24.2 26.7 29.1 31.5 33.9 36.4 38.8 41.2 43.6 46.1 48.5 50.9 53.3 55.8 58.2 60.6
SS40 2.12 3.3 0.1875 3.13 25.0 28.1 31.3 34.4 37.5 40.6 43.8 46.9 50.0 53.1 56.3 59.4 62.5 65.6 68.8 71.9 75.0 78.1
      10% Slippage 2.81 22.5 25.3 28.1 30.9 33.8 36.6 39.4 42.2 45.0 47.8 50.6 53.4 56.3 59.1 61.9 64.7 67.5 70.3
      20% Slippage 2.50 20.0 22.5 25.0 27.5 30.0 32.5 35.0 37.5 40.0 42.5 45.0 47.5 50.0 52.5 55.0 57.5 60.0 62.5
SS45 2.25 3.5 0.1875 3.31 26.5 29.8 33.1 36.5 39.8 43.1 46.4 49.7 53.0 56.3 59.7 63.0 66.3 69.6 72.9 76.2 79.5 82.9
      10% Slippage 2.98 23.9 26.8 29.8 32.8 35.8 38.8 41.8 44.7 47.7 50.7 53.7 56.7 59.7 62.6 65.6 68.6 71.6 74.6
      20% Slippage 2.65 21.2 23.9 26.5 29.2 31.8 34.5 37.1 39.8 42.4 45.1 47.7 50.4 53.0 55.7 58.3 61.0 63.6 66.3
SS50 2.30 3.6 0.1875 3.41 27.3 30.7 34.1 37.5 40.9 44.3 47.7 51.1 54.5 58.0 61.4 64.8 68.2 71.6 75.0 78.4 81.8 85.2
      10% Slippage 3.07 24.5 27.6 30.7 33.8 36.8 39.9 43.0 46.0 49.1 52.2 55.2 58.3 61.4 64.4 67.5 70.6 73.6 76.7
      20% Slippage 2.73 21.8 24.5 27.3 30.0 32.7 35.5 38.2 40.9 43.6 46.4 49.1 51.8 54.5 57.3 60.0 62.7 65.5 68.2
SS55 2.40 3.8 0.1875 3.60 28.8 32.4 36.0 39.6 43.2 46.8 50.4 54.0 57.6 61.2 64.8 68.4 72.0 75.6 79.2 82.8 86.4 90.0
      10% Slippage 3.24 25.9 29.1 32.4 35.6 38.9 42.1 45.3 48.6 51.8 55.1 58.3 61.5 64.8 68.0 71.3 74.5 77.7 81.0
      20% Slippage 2.88 23.0 25.9 28.8 31.7 34.5 37.4 40.3 43.2 46.1 48.9 51.8 54.7 57.6 60.5 63.3 66.2 69.1 72.0
SS60 2.52 3.9 0.1875 3.69 29.5 33.2 36.9 40.6 44.3 48.0 51.7 55.4 59.1 62.8 66.5 70.2 73.9 77.6 81.3 84.9 88.6 92.3
      10% Slippage 3.32 26.6 29.9 33.2 36.6 39.9 43.2 46.5 49.9 53.2 56.5 59.8 63.2 66.5 69.8 73.1 76.4 79.8 83.1
      20% Slippage 2.95 23.6 26.6 29.5 32.5 35.5 38.4 41.4 44.3 47.3 50.2 53.2 56.1 59.1 62.0 65.0 68.0 70.9 73.9
SS65 2.61 4.0 .1875 or .250 3.79 30.3 34.1 37.9 41.7 45.5 49.2 53.0 56.8 60.6 64.4 68.2 72.0 75.8 79.5 83.3 87.1 90.9 94.7
      10% Slippage 3.41 27.3 30.7 34.1 37.5 40.9 44.3 47.7 51.1 54.5 58.0 61.4 64.8 68.2 71.6 75.0 78.4 81.8 85.2
      20% Slippage 3.03 24.2 27.3 30.3 33.3 36.4 39.4 42.4 45.5 48.5 51.5 54.5 57.6 60.6 63.6 66.7 69.7 72.7 75.8
SS70 2.74 4.2 .1875 or .250 3.98 31.8 35.8 39.8 43.8 47.7 51.7 55.7 59.7 63.6 67.6 71.6 75.6 79.5 83.5 87.5 91.5 95.5 99.4
      10% Slippage 3.58 28.6 32.2 35.8 39.4 43.0 46.5 50.1 53.7 57.3 60.9 64.4 68.0 71.6 75.2 78.8 82.3 85.9 89.5
      20% Slippage 3.18 25.5 28.6 31.8 35.0 38.2 41.4 44.5 47.7 50.9 54.1 57.3 60.5 63.6 66.8 70.0 73.2 76.4 79.5
SS75 2.95 4.3 .1875 or .250