Counter Rotation

caspari

Cadet
Joined
Mar 14, 2004
Messages
26
Just purchased a 24' star craft with twin 135 Mercs (not counter rotated) is it necessary to counter rotate, or can I get away with it like it is? Been told trim tabs work.(?)
 

Kenny Bush

Chief Petty Officer
Joined
Mar 24, 2002
Messages
564
Re: Counter Rotation

How does it handle? Does it torque up on one side when you turn a certain direction? If not ... you may be OK. Heavier boats do OK also.....
 

caspari

Cadet
Joined
Mar 14, 2004
Messages
26
Re: Counter Rotation

have not run boat yet have a warning signal problem, but if it does pull do you know if trim tabs work, is the pull even manageable or is it too dangerous?
 

Kenny Bush

Chief Petty Officer
Joined
Mar 24, 2002
Messages
564
Re: Counter Rotation

I have seen quite a few boats with twins in the standard rotation format. Both engines rotate the same way. On boats with a lot of deadrise (Deep V) say about 20 degrees or more, they will tend to roll up on their side when turning a certain direction. Heavier boats also tend to be less affected by same rotation motors. Also outboards of today ALL run the same direction, it is the lower units that are coutered, unlike the old days of making the motor run backwards, to offset the torque. I would fix your alarm problem and go run her out and see how she rides....
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Counter Rotation

Moving to General Outboard
 
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