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Old 05 July 2009, 08:39   #1
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Re-pitching stainless prop question

Hi all, Just wondered how much you can re-pitch a stainless prop? I got a stainless prop for a bargin price second hand but the pitch was a bit out of what I was looking for,but, I thought I would give it a shot, unfortunatly I am only pulling 4600rpm WOT so I fear I will not be able to repitch enough!!

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Old 05 July 2009, 12:42   #2
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Originally Posted by win-or-bin View Post
Hi all, Just wondered how much you can re-pitch a stainless prop? I got a stainless prop for a bargin price second hand but the pitch was a bit out of what I was looking for,but, I thought I would give it a shot, unfortunatly I am only pulling 4600rpm WOT so I fear I will not be able to repitch enough!!

Thanks
You may be able to reduce by upto 2" however that is all. I dont know what the ideal RPM is for your engine but 2" may give you another 2-300 RPM. I doubt that would be enough.
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Old 05 July 2009, 22:34   #3
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If you need rpm, you could have the prop repitched as much as possible, but also reduce diameter. Rule of thumb is to gain 100 rpm for each 1/4" smaller in diameter. The alterations must be done in concert, or you'll lose the shape of the blade.

As to the original question, I, too have heard (from the prop shop I went to) that about 2" of pitch as the maximum you can reconfigure a prop.

jky
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Old 06 July 2009, 14:41   #4
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Where would one get this re pitching work done and roughly how much
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Old 06 July 2009, 15:35   #5
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http://www.propellersolutions.co.uk/
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Old 07 July 2009, 08:38   #6
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www.steeldevelopments.co.uk is another option
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Old 07 July 2009, 13:25   #7
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another

http://www.streamlinedpropellers.co.uk/
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