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  After new bracket - how fix too much bow lift?

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Author Topic:   After new bracket - how fix too much bow lift?
John Fitzgerald posted 07-09-2002 02:53 PM ET (US)   Profile for John Fitzgerald   Send Email to John Fitzgerald  
I put a CMC power tilt/trim bracket on my 13' sport. I did not raise the short shaft 40 hp johnson. Until I get her on plane, I have significantly more bow lift. Should I look for a stern lift prop? Any ideas?
Bigshot posted 07-09-2002 03:12 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Nope...won't do any good. The only way to lower bowrise on takeoff is to decrease trim angle.
bsmotril posted 07-17-2002 10:34 PM ET (US)     Profile for bsmotril  Send Email to bsmotril     
Too much bow lift and/or porpoising is a sympotom of a motor mounted too deep. The added setback of the bracket has effectively lowered the motor, because the water stream curls up after passing the transom. To make your motor perform as before, you have to raise the mounting position. Using a setback bracket is a common racing strategy to allow mounting the motor higher for more speed and less drag.
If you can raise the mounting a few inches, your problem should go away.
SuburbanBoy posted 07-17-2002 11:02 PM ET (US)     Profile for SuburbanBoy  Send Email to SuburbanBoy     
I have a 4" setback bracket. bsmotril, your comments parallel my own observations. Nice web page btw.


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