Jim's Cushman Scooter Site


          Comet Transmission Information

 
MPH RPM Ratio
0 0 2.44
20 2440 2.44
25 2650 2.12
30 2653 1.77
35 2580 1.47
40 2645 1.32
45 2705 1.20
50 2750 1.10
55 2830 1.00
60 3150 1.05
65 3410 1.05

 
RPM Ratio
2440 2.44
2650 2.12
2653 1.77
2580 1.47
2645 1.32
2705 1.20
2750 1.10
2830 1.00
3150 1.05
3410 1.05

 

The first graph shows the relationship between the engine speed in RPM and the Comet transmission ratio. The ratio is greatly affected by the horizontal alignment of the two Comet pulleys. See the Comet data sheet for more information about this offset.

The second graph shows the relationship between the speed of the engine in RPM and the speed of the bike in MPH.

Sprockets were selected for a top speed of 69 MPH at 3,580 RPM with a 1:1 Comet clutch ratio using a Vanguard 16 HP engine.

 

The technical information presented here is from actual measurements made by the owner of this web site and is believed to be accurate. It should not be considered official Comet Industries information. There is a link to Comet Industries on the Links page.

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