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Justan Olphart[_2_] Justan Olphart[_2_] is offline
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First recorded activity by BoatBanter: Aug 2015
Posts: 1,244
Default My 1985 Mercury 75

On 5/23/2016 10:46 AM, wrote:
On Mon, 23 May 2016 08:33:24 -0500, "Ryan P."
wrote:

On 5/17/2016 1:48 PM, Ryan P. wrote:

There was great debate over whether to lower the engine a peg, since
now it sits a little higher when vertical, but with the additional
setback (about 7") and additional down tilt, we figured the water would
be quiet enough to give me good performance. I can always lower it a
notch if I don't like the way it performs this weekend.


And the answer is... I don't like the way it performs. Oh, it gets on
plain super fast, but now I have a HARD pull to the right. I know I
should be able to tilt the motor back up to about vertical, but now at
cruising speed, vertical brings the prop up too high and I get excessive
revving.

Am I right in thinking that the hard pull is because the motor is
tilted in too far? Will lowering the motor a inch (or two) actually
alleviate the problem by letting me tilt out farther?

Thanks!


Have you tried adjusting the trim tab?

That might help but I suspect he's getting bow steer. He needs to lower
the motor and make sure he has some bow lift and the bow wake starts
about 1/3 of a boat length from the bow. Once he has that he can tweak
for the performance he wants.