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Old 23-08-2012, 13:51   #16
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Re: How to adjust rudder alignment

Originally Posted by colemj View Post
Ackerman angles can only be set on rudders that are physically tied to each other by a tie-bar. The angle is set for turning by offsetting the tiller bar connection on the rudder post - not toeing in the rudders on centerline. Toe in will result in drag with no benefit in turning.

48ft x 19ft plywood cat with assymetrical waterline plane hull shape (aircraft aerofoil shape, with the "wing bottom" side outboard),

Don't know if it works with the boat he described but since it is assymetrical, similar to a Hobie 16 the racers have determined that a little toe in is faster. Might not be similar as the 16s also run with a lot of weather helm to deliberately load up the rudder to reduce leeway.


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