[Sentoa] Emergency Tiller

[Jim Moore]

The rudder is slightly semi-balanced, that is the rudder shaft is slighly 
abaft the leading edge.  If not locked up it may oscillate but will probably 
average "neutral" over a period of, say, no more that 1-2 seconds.  Underway 
prop walk is steady and will manifest without an opposing rudder effort.  We 
notice it in reverse when there is no prop wash but it is alwasy a present 
in the opposite direction when underway, it's just corrected by the rudder 
setting.  A pair of lines attached to the tiller arm and secured to the aft 
side cleats could provide a slight offset to counter prop walk but would not 
provide any steering capability.

The top of the rudder shaft is squared so an emergency rudder should be 
relatively easy to engage with the top of the post.  A piece of pipe with 
two bends and welded to a fitting to engage the top of the shaft should 
work.  I think the top of the rudder shaft on the 37 is too far aft to allow 
a "pie plate" access from the cockpit.  If so the emergency tiller would 
have to be engaged through the cockpit hatch.

Scotty (THREE JEANS- 37063) - Here's a project for you!!  The wedding is 
over so I know you have some free time.  Can we agree to call it a SCOTTY 
TOOL or just a SCOTTY?  Immortality is knocking on your door. 
 ("Oh, - - - -!  We've lost steering and we're meeting a container ship! 
Honey, please maintain watch while I dig out the SCOTTY.")  Inasmuch as you 
already have the patent on red (stack) I can guess your color preference. 
Please advise MSRP.

James Moore
RILEY 37085


----- Original Message ----- 
From: <jag at vcn.bc.ca>
To: <sentoa at lists.samurai.com>
Sent: Monday, August 18, 2008 11:19 PM
Subject: Re: [Sentoa] Emergency Tiller


>
> I have given this a "little" thought. In forward gear the rudder is going
> to swing hard over (which way ? ). A simple method of restraining it i.e.
> a length of small chain, one end secured to the tiller lever and the other
> secured to an "eye", adjustable link by link should allow one to proceed
> in straight line segments. I presume there could be quite a force on the
> rudder and the "eye" need be substantial. Secured through the stringer ??
>
> Has anybody had any experience with the this ?
>
> John Gallagher
> RADIANT
> 32-068
> Vancouver, B.C
>
>
>
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