HI Mac,
Thanks for the advice. Your instructions on figuring the place to drill the first two holes is great -- Now I have a methodical approach the problem without having to think about it for two days to be sure I've taken all the variables in account(regular and deep prop drive, power head clearance).
Best,
Judy
In a message dated Tue, 17 Aug 1999 10:12:48 AM Eastern Daylight Time, "Mac Davis" <mcmd@innet.com> writes:
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> West Wight Potter Website at URL
> http://www.lesbois.com/wwpotter/
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> Hi Judy:
> You may be asking too much of the stock Fulton mount. My long shaft
> Evinrude 6 does a good job of going deep enough for the 2-4 seas routine in
> the Gulf, but won't raise high enough to clear the water completely because
> the powerhead hits the transom as the motor rotates to the lock position
> with the mount up. Turning the motor sideways helps enough so that only
> the tip of one blade drags. To check if this situation applies to you,
> mount the motor on a stand and measure the fore and aft travel as the motor
> lifts/rotates. I had the same problem with an earlier trailerboat (Chrysler
> 22) and fixed it by putting a 2 " block between the mount and the transom as
> a spacer, as well as drilling new holes in the parallel arms of the mount to
> extend the motor farther aft. As with many of my modifications, effective
> but somewhat cosmetically challenged. I have not done this with Kelpie as I
> don't intend to keep the Evinrude as the powerplant. It's overkill for my
> motoring needs, achieving hull speed at less than half throttle, and heavy
> to boot.
>
> The distance from the inside top of the mounting bracket on the motor to the
> cavitation plate is the critical vertical dimension. The top of the Fulton
> mounting pad is the same elevation as the inside top of the motor mounting
> bracket. At the low position, the distance from the top of the Fulton mount
> to the waterline should be at least 6 inches less than the critical
> dimension. This should put the cavitation plate 6 inches under water with
> the mount full down. If the range is 14 inches, the cavitation plate would
> be 8 inches above the water line in the full up position, and the tip of the
> motor skeg just barely in the water. You can drill 2 holes based on these
> measurements, mount the mount and motor, and check things. The multiple
> holes in the mount will then allow a couple of inches adjustment either way
> while still using the original holes. When exactly as you want it, drill
> additional holes, install backing plate and voila.
> Hope this helps,
> Mac Davis, Kelpie, WWP19#804, Aripeka, Fl