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Sun, December 22 2024, 01:06 [ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, 2, [3], 4, 5, 6, 7, 8, 9 ]

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Date Posted: - Friday - 05/27/11 - 4:50pm
Author: Mike Anthony
Subject: Prop size
In reply to: Alan Gallagher 's message, "Mariner 40 Propeller size" on - Friday - 04/29/11 - 7:21pm

I also have a 40, #85, When we repowered with a new 65 hp engine the recommened prop for my 1 1/8" shaft was a 18x15. If I would have upgraded to a 1.5" shaft I could have gone to a 21x17...the 18x15 gives me 2600rpm which is my max rpms. It has worked well for me.

Mike

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[> [> mariner 40 prop size -- Alan Gallagher (:o)), - Sunday - 09/11/11 - 6:17pm

I've got a Perkins 4-108 in our 40 --- I was told I need a 18/13 which I have but it is so slow - had a Luke feathering prop 18/13 for awhile - she worked okee dokie but it crapped out so I put the three bladed left hand 18/13 o and now my girl is way to slow - I've got a 1 1/8 shaft and a Borg Warner transmission and no clue as to what to prop her with - is there anyway or anyone that can tell me how to get the correct ratio and get this girl going again?


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