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Old 12-11-2014, 08:14   #1
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Join Date: Dec 2009
Location: Pickering Ontario
Boat: 1995 hunter 430
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sprocket rotary drive

I have contacted ....Applied....for a quote on my sprockets for my type 2 rotary drive,
as per the chart I need a 15 tooth and a 57 tooth sprocket with a three eighth pitch..........the 15 tooth is no problem along with the chain.......but the 57 tooth is a special order and its 450 bucks..........(the 15 tooth is 70 bucks).....
am I looking in the right spot....
is this normal....
please adise

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Old 12-11-2014, 14:52   #2
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Location: New Orleans
Boat: 1976 Cal 2-27
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Re: sprocket rotary drive

Is this a engine to prop reduction gear? Electric motor repower? I would say look for a sprocket that is close to what you want and don't worry about being exact. As long as the reduction ratio doesn't change more than 5% or so, you will never know the difference. If one tooth more or less saves you $400 then it is money well saved.

1976 Cal 2-27, MR WIGGLES
Now with clean, dependable electric propulsion!
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Old 12-11-2014, 15:00   #3
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Boat: Boden 36 Triple chine long keel steel, named Nekeyah
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Re: sprocket rotary drive

57 divided by 15 gives you a 3.8: 1 ratio. Any combination of sprockets that gives you that ratio will work, so try to find it in common sizes.

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Old 12-11-2014, 15:00   #4
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Re: sprocket rotary drive

I think he is talking auto pilot? If so, is there a rudder angle sensor?
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Old 12-11-2014, 15:01   #5
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Boat: '76 Allied Seawind II, 32'
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Re: sprocket rotary drive

I picked up sprockets from McMaster Carr for my type 1 rotary drive.....

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