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Old 09-28-2017, 02:30 PM   #9
PMF1984
Guru
 
City: Marion, Massachusetts
Vessel Name: Wanderer
Vessel Model: Pilgrim 40
Join Date: Sep 2016
Posts: 632
You have to get the transmission info on the transmission plate.

Think about the work the engine does and about how it relates to the transmission.

The work the engine does relates to the rpm, transmission, prop diameter and pitch.

The work the engine should do is related to type of hull, length, beam, and tonnage.

I the "does" is more than "should do" you'll be seeing black smoke soon (if you have a diesel) that's a sign of asking too muck work from the engine

Most prop places have a computer program now that needs these inputs.
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