Balancing the 2nd
Generation Beaching Rudder
Helm handling is important to me and the 250 when I first
purchased her did not have a friendly helm. The problems were obviously
more than sail trim and boat balance.
Many
sub systems in a boat have their own balance issues, and this is true
for
the rudder. An unbalanced rudder requires all effort to move
it come from the helmsman. On a large rudder surface, this can
require considerable effort and result in a heavy helm. Balancing
places some area ahead of the hinge point and thus allows water flow to
assist and thus lighten the helm. In essence, it balances the
load on the pintles much like a teeter totter. While a fully
balanced rudder
is fairly mushy but easy to turn, a good compromise for a high aspect -
high lift rudder is a partial balance. Below are the steps to
obtain that with the 2nd generation beaching rudder.
Rudder torque was so excessive on my boat that pulling out of hard
turns made use of the autopilot impossible. Fortunately, the fix
was not difficult. It is accomplished by raking the lower portion
of the rudder forward which is fairly easy to do by milling some relief
to the frame of the rudder head. The pictures shows the area
milled from the rudder head to allow the rudder to swing forward.
This mod also requires converting
the hold down system by doing away with the rivet-detent system that
after some wear, allowed the rudder to trail aft
and contribute to the rudders unbalanced condition.
Many owners have likely changed to the 3rd generation (offered only in
a blade) but I like the beaching rudder because of its greater lift and
only partial balance. These yield full control, but yet some feedback
without excessive torque. The beaching design also offers
forgiveness for a grounding and the ability to get thru skinny
water. Note: Remember, that a beaching rudder should not be used
to helm the boat in an aft raked position as it will produce far too
much torque on the steering system. While raised for shoal
waters... steering should be done by the outboard motor.





PLEASE
NOTE: that this mod
can be intense if the screws holding the side
plates are seized and they likely are. The mod itself is not difficult
and the portion needed cut from the rudder head can be done
with a variety of tools including a table saw, band saw, saber saw,
milling machine, hack saw, or power sander.
Drilling out the sheered screws is difficult but can be done...
I did
it for another owner but it took a good bit of careful effort.