[C320-list] knot meter

[warren updike]

Ed, I think someone previously mentioned that when he cut the transducer
wires he used a terminal block for the connections so that the transducer
could easily be removed from the boat. I don't know how valid a practice
this is. If you were to keep the connections on the terminal block clean,
you probably wouldn't have a problem. Still, the purest among us would say
that any connection introduces a current drop.  Maybe one of the electrical
engineers will weigh-in on this.

Warren & Pattie Updike
Catalina 320, #62, "Warr De Mar"
Middle River, Chesapeake Bay



-----Original Message-----
From: Ed Edwards [mailto:edandsue.pt at gmail.com] 
Sent: Tuesday, April 14, 2009 10:13 PM
To: C320-List at catalina320.com
Subject: Re: [C320-list] knot meter

Jeff,
Thanks for the help, I've got e-mails out to Gemeco and Airmar trying to get
the correct parts numbers.  Airmar confirmed that I can cut and splice the
cable with their splice kit or by soldering and heat shrinking the splice.

On Sat, Apr 11, 2009 at 10:45 AM, Jeff Church <jc387 at att.net> wrote:

> Ed,
>
> My friend got his replacement from Gemeco. It was a newer style transducer
> with a sleeve that adapted it to the existing thru-hull fitting.  JeffC
>
>
> Ed Edwards wrote:
>
>> Does anyone have experience replacing the paddle transducer on an
Autohelm
>> ST 50 Plus Speed package?  My knot meter failed this past winter, all
>> functions appear to be working except it won't register speed and
>> associated
>> info.  When I had the bottom painted last month the knot meter worked
when
>> I
>> used a leaf blower to rotate the paddle wheel.  It didn't work when I
went
>> back in the water.  According to Raymarine's web site, this is
symptomatic
>> of water in the unit.  Autohelm is no more, Raymarine doesn't deal with
>> transducers.  They suggested that I contact Gemeco.com, a transducer
>> wholesaler.  Gemeco's website is for wholesaler.  I've got an e-mail into
>> them but I think it is a deadend.
>>
>> Raymarines troublshooting site says that the ST50 transducer can be
>> replaced
>> with an ST60 transducer.  It requires a junction box.  The parts numbers
>> they gave were obsolete.
>>
>> I'm pretty sure the ST60 transducer is available, the big question is-
>> *Can
>> I get a splice kit to connect the ST60 to my existing ST50  wiring?*
>>  There
>> are already so many wires and so much caulking in the pedestal tubing
that
>> nothing else is going in or coming out.
>>
>>
>>
>