Re: [OMC-Boats] Engine RPM and Boat Speed.

Don and Dave:

Not sure what the problem is but its not propeller slippage. The drive pin
prevents that - leading to many damaged propellers over the years.

-Doug Julien

----- Original Message -----
From: <drusilas@...>
To: <omc-boats@...>
Sent: Tuesday, July 22, 2008 4:10 AM
Subject: Re: [OMC-Boats] Engine RPM and Boat Speed.

> Don,
>
> I have the same prop on a 1969 Sportsman 155. I make 25 mph at about 3000
RPM and top out at 36 MPH at about 4000 RPM. I'm pretty sure that the foam
flotation under the floor is waterlogged too.
>
> I'm not sure what could be causing you not to get up to speed but
something's definitely going on. Even though these props are driven by a
shear pin I believe that the hubs are still set in rubber. If you didn't
experience these problems before with another prop, maybe the hub is
slipping inside this one.
>
> Dave Rusilas
>
>
> -----Original Message-----
> From: Don Mandelas <dmandelas@...>
> To: Evinrude & Johnson Boats of the 1960's and 70's
<omc-boats@...>
> Sent: Tue, 22 Jul 2008 3:12 am
> Subject: Re: [OMC-Boats] Engine RPM and Boat Speed.
>
>
> I have a 1967 Evinrude Sportsman boat with the V-6 155 hp engine.? On the
stern drive unit I have installed the 14 x 18 propeller.? When the engine
reaches 3700 RPMs how fast generally should I be traveling across the
water?? It seems lately that I am going slower than normal (about 25 mph).
> Stay in touch when you're away with Windows Live Messenger. IM anytime
you're online. =
>
>
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>

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