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First recorded activity by BoatBanter: Jun 2007
Posts: 4
Default trim angle, rooster-tail, poor performance

Hi all,

I have a small (14 ft) wood boat that I built myself. I put a 25 HP
(Suzuki 4 stroke, manual trim) outboard on it. The angle of the
transom is such that the outboard is always trimmed in (even when I
adjust the bracket to the most trimmed out pin). The outboard may also
be a little bit high. The cavitation plate is at an angle in the
water, the front is lower than the back, the front is probably level
with the keel or 1/4" high, while the back is higher than the keel.

What I have noticed in the water is that the boat creates a lot of
spray, a big rooster tail appears behind the boat (maybe 4-6 ft
behind), and the performance seems quite sluggish. I am a little
confused as I expected that a trimmed in motor would not generate a
rooster-tail of water coming up, quite to the contrary that it would
push water down.

Could the trim angle or the motor height be causing this problem?


Thanks
--Hector

 
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