Originally Posted by HappyMdRSailor
Wonder what the heck oldfrogster was trying to accomplish? And even more importantly... why from under the boat?
As usual it took about 5 or 6 posts for Old Frog to realize he hadn't been specific enough in his OP so here goes:
As a club sailor I get on (and race) a lot of different boats (38 or so at last count) and all but a very few have a wheel
rather than a tiller.
The range of the wheel
from center to rudder
stop varies from boat to boat but is usually somewhere between 180 - 270 degrees.
If I know the total rudder arc
I can do the arithmetic and figure out how much helm
(rudder) I'm adding for any given degree turn of the wheel and therefore how much additional resistance the rudder might be creating in the water
, because obviously less is good; more is bad.
I was hoping there is an industry standard regarding full rudder arc
for sailboats with a wheel helm
since this information is next to impossible to come by on an individual boat basis.
Consequently, if all boats are different, as I suspect they are, I was looking for a quick, easy way to derive the degrees of full rudder arc without hauling out the boat or diving
down to inspect it empirically - neither of which are practical, at least not for me.