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Pooley929
01-31-2002, 11:15 PM
Whats the deal with the rudder servo arm do I need to drill a hole in there ?
01-31-2002, 11:30 PM
Yes you do need to drill a hole in the arm.
Jeff Wohlt
02-01-2002, 10:05 AM
Can anyone tell me why the new rudders are swept back? What does this do? Seems it would try to raise the rear end up or does it not matter? A couple of my molded units like the SH also has the skeg/rudder swept back.

Great looking new hardware. Can the transom take the stress of two units torquing on one set of screws. Obviously it works so maybe I'll hush.
AndyKunz
02-01-2002, 10:49 AM
Jeff,

It's the HINGE LINE that matters most. If the hinge is not perpendicular to the water, it would lift of drop the transom in a turn.

You should have a little lift for turning the hydros as the prop doesn't lift as well then. To get that lift, kick back the rudder blade about 1/8" - remembering that the hinge line is what needs to change.

Andy
Jeff Wohlt
02-01-2002, 12:16 PM
So the distance of the hinge is more important than the angle? The angle has to do something right?
AndyKunz
02-01-2002, 12:20 PM
Originally posted by Jeff Wohlt
So the distance of the hinge is more important than the angle? The angle has to do something right?

No, the ANGLE of the hinge is almost everything. (We won't worry about wedge or profile etc).

Think about it with a rudder in your hand. If the rudder is perpendicular to the direction of travel, forces applied by the rudder are only going to put yaw (turning) forces out.

If the rudder blade is parallel to the direction of travel and the hinge is in the same position on the transom, this is the exact same as a very short but broad rudder blade, and there are STILL no lifting forces.

If the rudder is hinged at an angle, some the force will be translated to turning and some to lifting. Just how much is dependent only on the angle.

Andy