[C320-list] Maximum Stop to Stop Wheel Turn Capability

Sun May 18 17:39:10 PDT 2008

Bill,

This is an old lever and fulcrum problem and the net, net is, as you have
already guessed, one size doesn't fit all. On the early boats the clamp
attached to the rudder post will have to be longer to slow the rod travel
and not exceed the sensor travel. On my boat, I mounted the rod to the
rudder bellcrank and had to mount it almost at the outer edge of the
bellcrank  so the rudder stops were the limits as opposed to the sensor
which would break. My mount is on a .025 aluminum bracket that I fabricated
and has a small amount of give so that as things move there is some
tolerance to an imperfect bellcrank, sensor geometry. My boat is a 2 turn
lock to lock and I suspect if you used an old boat mount on a new boat all
you would lose is the last few degrees of travel indication which I suspect
few would miss. If it works on the old boats it should work on the new ones
with no loss of performance in it's true function.

Monte
Laima #620

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Bill MacRae
Sent: Sunday, May 18, 2008 8:59 AM
To: c320-list at catalina320.com
Subject: Re: [C320-list] Maximum Stop to Stop Wheel Turn Capability

This is an excellent and timely subject especially for those involved in the
rudder sensor project.  Jeff is correct; I was getting dimensions for the
brackets and realized that my rudder swings about 180 degrees.  This is
probably why the rudder sensor is only good for 120 degrees included.  The
swing will have to be reduced or the connecting rod will bend around the
rudder post and cause other possible damages. 

There are some variables that need to be addressed to ensure that the
brackets fit all of the boats.  I will be emailing some pictures and
questions to those that have expressed interest in the kits and brackets.
If there is anyone else that hasn't contacted me who is interested, please
write and I will include you in the emails.

Bill
531> From: jjemail at comcast.net> To: C320-List at Catalina320.com> Date: Sat, 17
May 2008 10:32:25 -0500> Subject: Re: [C320-list] Maximum Stop to Stop Wheel
Turn Capability> > Chris,> > You might be correct, but this much I know. On
older boats the rudder could swing much more than 60 degrees in either
direction. When I installed the sensor on my 1998 I had to add material to
the stop because the sensor's swing is physically limited to 60 degrees.
Turn it farther than that and parts have to bend or break.> > My guess was
that CY changed to a tether to keep the sensor from being damaged. Maybe
they did it because the rudder post might be damaged or stall at anything
approaching 60 degrees at speed. On my 387 the rudder is limited to much
less than 60 degrees and that is very difficult to get used to after owning
the 320. Unfortunately, the autohelm drive unit doesn't allow more movement
than that. > > There are lots of thing about the 320 that I'm going to miss.
It's a great boat.> > Jeff > > > > > ----- Original Message ----- > From:
crashley at gte.net > To: C320-List at Catalina320.com > Sent: Saturday, May 17,
2008 12:53 AM> Subject: [C320-list] Maximum Stop to Stop Wheel Turn
Capability> > > Jeff,> > I don't think I agree. I have an ST4000 with a
rudder sensor and it does not > restrict the range in any way.> > CRA>
Rosebud #882> > > ----- Original Message ----- > From: "Jeff Church"
<jjemail at comcast.net>> To: <C320-List at Catalina320.com>> Sent: Friday, May
16, 2008 8:34 PM> Subject: Re: [C320-list] Anyone interested in Rudder
ReferenceSensor> > > Maybe because the autopilot kits now include a rudder
reference transducer > and it has a max swing of 60 degrees in either
direction.> > JeffC> ----- Original Message ----- > From: crashley at gte.net>
To: C320-List at Catalina320.com> Sent: Friday, May 16, 2008 8:37 AM> Subject:
Re: [C320-list] Anyone interested in Rudder ReferenceSensor > andbrackets?>
> > Pat and Jeff,> > It sounds like that rudder stop was a bit too tight. I
have a 2002 C320 > and> the wheels goes about +/- 3/4 turn lock to lock (1.5
turns overall). I can> turn on a dime. Has it been reduced further? Why?> >
CRA> Rosebud #882> > ----- Original Message ----- > From: "Jeff Church"
<jjemail at comcast.net>> To: <C320-List at Catalina320.com>> Sent: Wednesday, May
14, 2008 10:15 PM> Subject: Re: [C320-list] Anyone interested in Rudder
Reference Sensor> andbrackets?> > > Pat,> > CY changed the rudder stops
sometime after 1998. Yours had some stops> attached to the quadrant that
contacted fiberglass blocks that were molded> into the liner. Newer boats
have a wire tether attached to the quadrant > and> bolted to the liner.> >
JeffC> ----- Original Message ----- > From: Pat Moriarty> To:
C320-List at Catalina320.com> Sent: Wednesday, May 14, 2008 9:34 AM> Subject:
Re: [C320-list] Anyone interested in Rudder Reference Sensor > and>
brackets?> > > Well it gives you an instant location of the> rudder which if
you are backing out of your slip> in a big cross wind is real handy. OK I
have a> question. I have #130 1994 and it is 2 turns lock> to lock but I
drove a 2005 C320 and it only had> one turn lock to lock, is the rudder much
smaller> on the new boats, or what gives? I know that it> did not turn as
fast as mine into the slip ok> dock because I missed the slip completely as
I expected it to turn.> > Pat #130> > > At 09:15 AM 5/14/2008, you wrote:>
>This may sound stupid, but that has never stopped me before..> >> >I've
seen a number of references to the rudder sensor solving 'the> >problem'
over the last couple years, but have missed just what the> >problem solved
is. I'm guessing it may be installation-specific.> >> >In my case, I've been
pleased with the ST4000 w/o the sensor. Under> >power it tracks right on
course w/o hunting. It does a fairly decent> >job under sail (though I
rarely use it then). Now the one place it> >falls down is trying the
'auto-tack' under sail, but that isn't a big> >deal for me.> >> >Would I see
any benefit from a rudder sensor?> >> >> >On May 14, 2008, at 8:39 AM, Bill
MacRae wrote:> >> >>> >>Stan, you're on the list.> >>> >>As of now there are
a 3 additional sensors available at a nice> >>discount. This is the list so
far, please let me know if I'm> >>missing anyone.> >>> >>1) Bill M> >>2) Ken
D> >>3) Ralph W> >>4) Charles A (brackets only)> >>5) Stan> >>> >>I'll be
placing the order for the material on Monday.> >>> >>Thanks,> >>Bill> >>>
>>> >>> >>> >>>Date: Tue, 13 May 2008 17:21:18 -0700> From:
ola7442000 at gmail.com>> >>>To: C320-List at catalina320.com> Subject: Re:
[C320-list] Anyone> >>>interested in Rudder Reference Sensor and brackets?>
> Hi Bill,> >> >>>I checked the new X10 autopilot price. $3000.00!!!!!!!!.
Put me on> >>>the> list for your rudder sensor kit.> > Stan> "Our Little>
>>>Amusement" #744> > On Sun, May 11, 2008 at> >>>4:23 PM, Bill MacRae
<seacalling at msn.com >> >>>wrote:> > >> > I was thinking about making a
bracket similar to> >>>Stephen Cox's design.> > Shown on this> >>>link:> >
http://tinyurl.com/6jxwjs > >> > As> >>>things turned out, I happened to
find someone that bought> >>>out a marine> > store who has at least 7
sensors that he would be> >>>happy to sell at a> > significant discount.
Since I have a machine> >>>shop, I could run off 7> > brackets and offer a
complete kit that> >>>includes sensor, brackets, and> > hardware for around
$300 to $325> >>>providing there are takers for all 7 kits.> > All you would
have to> >>>do is clamp the brackets on and connect 4 wires. I> > will find
out> >>>on Monday if he has more than 7 sensors. The first 7 people> > that>
>>>signs up gets them.> >> > 1) Me> > 2)> > 3)> > 4)> > 5)> > 6)> >> >>>7)>
>> >>>_________________________________________________________________>>
>>> > Stay in touch when you're away with Windows> >>> Live Messenger.> >>
>> >>>>
http://www.windowslive.com/messenger/overview.html?ocid=TXT_TAGLM_WL_Refresh
_messenger_052008> >>> > > > > > -- > Stan> "Our Little Amusement"> C320
#744> N 36 03'> >>>15"> W 114 48' 16"> __/)__/)__/)__/)__>
>>_________________________________________________________________> >>Get
Free (PRODUCT) REDT Emoticons, Winks and Display Pics.>
>>http://joinred.spaces.live.com?ocid=TXT_HMTG_prodredemoticons_052008> >> >
Pat Moriarty> PSI Urethanes Inc> PH: 800-888-5156 Fax: 512-837-8733> Please
visit our web site at> www.psiurethanes.com> > > 
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