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Forum: General Q & A

08-15-2010, 11:51 AM

Replies: 3

High altitude prop change/trade

Views: 657

Posted By Griff

If your 90hp loss calculation is correct, then...

If your 90hp loss calculation is correct, then you should be able to use a 21" prop of the same model prop. 60-70hp is usually worth about 2" of pitch.

Forum: General Q & A

08-14-2010, 12:27 PM

Replies: 3

High altitude prop change/trade

Views: 657

Posted By Griff

How much pitch to go down depends on what rpm you...

How much pitch to go down depends on what rpm you are spinning at WOT.

A 26' boat with a 525EFI only spinning a 23" prop sounds off to me already. Do you know what gear ratio your drive is???

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