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 Post subject: 3 blade Max Prop setting
PostPosted: 01 Aug 2009 18:19 
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Rail Meat

Joined: 01 Aug 2009 18:09
Posts: 1
If anyone is using a 3-blade MaxProp, I would be interested in learning what you have the pitch set at.


 
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 Post subject: Re: 3 blade Max Prop setting
PostPosted: 03 Aug 2009 18:02 
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Skipper

Joined: 19 Mar 2007 16:40
Posts: 195
I have a 16" 3 blade classic on Ardea. I just had it repitched to 7.4". I get 3300 RPM max and about 7 knots top speed. At 8.6" it could get 7.2 knots at about 2700 RPM but only 3000 RPM max. I'm still 300 RPM shy of read line but I'm afraid to go any flatter on the pitch as it doesn't have much dig as it is.

-Jim Boissier
Ardea T-37 #285


 
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 Post subject: Re: 3 blade Max Prop setting
PostPosted: 04 Aug 2009 05:14 
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Skipper

Joined: 29 Dec 2006 09:38
Posts: 656
What engine do you have? I believe the max RPM on a W 50 is 3200.


 
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 Post subject: Re: 3 blade Max Prop setting
PostPosted: 05 Aug 2009 13:29 
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Skipper

Joined: 19 Mar 2007 16:40
Posts: 195
Velera wrote:
What engine do you have? I believe the max RPM on a W 50 is 3200.


Ah, but the max RPM on a new Beta Marine 38 is 3600. Very Happy Very Happy

-Jim


 
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 Post subject: Re: 3 blade Max Prop setting
PostPosted: 24 Sep 2009 15:21 
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Skipper

Joined: 19 Mar 2007 16:40
Posts: 195
An update on my prop. After finding out that my pitch is way too shallow compared to the norm for this type boat/engine configuration I checked some pictures and it appears that I have a prop larger than 16" ( 17" or 18"). PYI (Max Prop) says I should have a 16x11 three blade to achieve 3600 rpm. I will be sending the prop back to them to have it (and my bank account) cut down.

-Jim


 
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