Gardner,

  Here's what I believe is happening:

  a)  With the quadrants, if you look at the cable, you'll see that it doesn't have to wrap 360 degrees around the quadrant.  Just 358 degrees -- because the rudder only rotates 270 degrees, the cable doesn't have to pass through the sleeve that holds the rudder.  That leaves the sleeve free to have a "fuse" that will break, allowing the rudder to kick up, without interfering with the cable.

  b)  With tillers, you're probably going to have a somewhat short tiller with a very long tiller extension.  This extension will then allow you to either:

      1) Turn the rudder 180 degrees between shunts, with the tiller then on the opposite side, or

      2) Turn the rudder 180 degrees, flip the tiller back to the original side, and then steer as before, or

      3) Just kick up the foreward rudder and use the aft for both steering and leeway prevention.


  Anyone: please fee free to correct me if I didn't get it.
 
  I'd personally prefer speer sections that don't have to rotate more than a few degrees between shunts, allowing steering with a whipstaff or vertical tiller, but I'm not willing to bet on that solution without first doing some real-world tests.

       - Mike



gardner@networknow.org wrote:

 

Hi,

I have been looking at all the photos I can locate of the rudders on different harryproas, but particularly sidecarry, aroha and blind date. I can't figure out how the kickup mechanism works.

With the boats that have a quadrant at the rudder, it would seem that the cable would either hold the rudder in place, or else rip things out of the rest of the boat.

If you use tillers, when the rudders are 20' apart, then doesn't the long (10+') tiller jump all around when the rudder kicks up?

Can someone point me to some photos that explain this better?

Thanks,
- Gardner