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twin props.....

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Old 05-17-2010, 12:24 PM
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Question twin props.....

how do you pick out props for a twin? I keep seeing adds for right and left hand props. Do you need one of each? What pitch should I use?
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Old 05-17-2010, 01:42 PM
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There are a very few twin engine boats out there that have both props spinning in the same direction. That is the exception. Almost all twin engine boats have the props rotating in opposite directions. Most rotate the props outward. Some performance boats will rotate the props inward. The difference in rotation is usually done in the drives, though some older boats accomplished it with the engines. You will need both a left and right hand prop. The pitch will be determined by several different factors. You need to provide as much information as you can concerning your boat, the engines, the outdrives, etc.
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Old 05-17-2010, 02:23 PM
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I just got an 1986 Chris Craft Stinger 260 with twin 260HP V8 Mercs
it has Alpha One out drives and that is about all I know at this point.
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Old 05-17-2010, 08:31 PM
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Quote:
Originally Posted by beergeek View Post
I just got an 1986 Chris Craft Stinger 260 with twin 260HP V8 Mercs
it has Alpha One out drives and that is about all I know at this point.
on your boat both outdrives are probably rh drive that's how most of the alpha boats in the 80s came ,for props you should probably look for something like a mirage + 21 pitch. Check the Chris Craft section I'm sure they would have some more info on where to start

Last edited by andyt25; 05-17-2010 at 08:37 PM.
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Old 05-17-2010, 08:55 PM
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I ran 23 inch Mirage three blades on my 260 and they were both right hand drives. It was just slightly over propped with those but cruised efortlessly at around fifty. Great boat and i had a lot of fun with it.


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