[Rhodes22-list] GB tiller-motor link geometry problem

[PBR]

On this new to me 89 recycled 2012 I have issues with the tiller link.  On
my first boat I made a link that worked pretty well.  I recall at higher
speed it wanted to just go straight (which was fine).

This one is really squirrelly.  If you start to turn it seems unstable and
just wants to go full into a hard turn.  From these pics. at center, turned
max port, and max starboard - you can see that the motor is turning much
faster than the rudder and it actually stops the rudder from turning as
much as I would like to cruise into dock.  It also kind of binds up as the
max angle resists turning back from the stops.

On my home built I tried to get the distance from the rudder rotation point
to the connecting bar, and the distance from the motor rotation point to
the attach point on it to be about the same radius.  In this GB setup, the
rudder pin to connection pivot point  is about 16 inches whereas on the
motor it is only about 5 inches.  I think this is the problem and I
probably need to build an extension to move the attach point on the motor
top out further behind it.

Thoughts?

I sort of need this linkage for maneuvering in shallow water where my
rudder might get kicked up.  If I leave the motor straight I could have
prop. impact.

Patrick
-------------- next part --------------
A non-text attachment was scrubbed...
Name: RudderPT.jpg
Type: image/jpeg
Size: 684357 bytes
Desc: not available
URL: <http://rhodes22.org/pipermail/rhodes22-list/attachments/20240606/f1808a34/attachment.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: RudderSB.jpg
Type: image/jpeg
Size: 703586 bytes
Desc: not available
URL: <http://rhodes22.org/pipermail/rhodes22-list/attachments/20240606/f1808a34/attachment-0001.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: RudderCtr.jpg
Type: image/jpeg
Size: 2231008 bytes
Desc: not available
URL: <http://rhodes22.org/pipermail/rhodes22-list/attachments/20240606/f1808a34/attachment-0002.jpg>