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hi


You are replying to:
VMS
Posted 9/19/2012 8:48 AM (#585703 - in reply to #585272)
Subject: Re: 115 merc prop





Posts: 3511


Location: Elk River, Minnesota
Hiya,

In most cases when a boat is set up, the plate is set so that it matches the lowest portion of the hull. This is a great starting point if you run aluminum...any higher and most aluminum props cannot hold and will quickly ventilate.

I would highly suggest checking as mnpat said, but I would not bother moving the motor until you have a prop that is getting you much closer to your rpm range. A move of the motor up one hole is roughly good for about 100 rpms, so it is only a minute change and with an aluminum propeller, one bolt hole too high and the prop will blow out quite easily and performance is lost since very little trim can be applied before the prop breaks loose.

I too am interested in the exact model, as I wonder about the gear ratio and power curve. The ones I have looked at are 2.33:1 on the website, which surprises me that with a 15 pitch they are having a tougher time getting out of the hole than other models... I'd love to see the dyno power curve on this engine....that would tell a good story..

Steve

Edited by VMS 9/19/2012 8:50 AM

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