[Rhodes22-list] Depthsounder

[John Tonjes]

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Attached is a picture that I scanned a while back from a trailer sailor
book showing the mounting of a transducer. They talk about a plastic box
with a cap, but I have seen this installation using PVC plumbing pipe
and a screw down cap.

-----Original Message-----
From: rhodes22-list-bounces@rhodes22.org
[mailto:rhodes22-list-bounces@rhodes22.org] On Behalf Of Roger Pihlaja
Sent: Tuesday, February 18, 2003 4:53 PM
To: The Rhodes 22 mail list
Subject: Re: [Rhodes22-list] Depthsounder


Jim,

The lazarette compartment would be my 2nd choice for mounting a depth
sounder transducer.  The hull is nice and flat back there.  The hull is
relatively thin under the lazarette compartment and there is easy access
to the backside of the transducer for initial installation and any
future repairs.  If you mounted the transducer slightly off the
centerline; then, any bubbles from the cockpit drain shouldn't affect
it.  I would mount it on the starboard side away from the engine and as
far forward in the lazarette compartment as possible.  This is so, that
in reverse gear, the bubbles from prop cavitation and engine exhaust
won't confuse the depthsounder.

My only caution about a lazarette compartment installation is the need
to protect the backside of the transducer and the cable from shifting
cargo.  I don't know about you; but, I keep some pretty heavy gear like
anchors, chains, shore power cord, fishing tackle box, trolling motor
battery, etc in the lazarette compartment.  On a rough passage or
trailering down the road, having one of those items snap off the
transducer or damage the cable would be a real bummer.  You might lose
your depthsounder just when you really need it.  Or, even worse, create
a bad leak into your lazarette compartment.

The other nice thing about the bilge installation I suggested in my
earlier post is that there is nothing rattling around loose underneath
the cabin sole to damage the transducer or cable.

There are enough things that can go crooked while sailing.  I just hate
to install a built-in "gotcha" in my boat that I always have to be
careful about.  But, I suppose if you were willing to install suitable
protection for the backside of the transducer and cable; then, the
lazarette compartment could be a good location.

Roger Pihlaja
S/V Dynamic Equilibrium

----- Original Message -----
From: "Bob Weber" <ruba1811@hotmail.com>
To: <rhodes22-list@rhodes22.org>
Sent: Tuesday, February 18, 2003 12:57 PM
Subject: Re: [Rhodes22-list] Depthsounder


> Jim, I mounted a fishfinder/depth finder transduce in the most forward
part
> of the laz shooting thu the hull.  There is a drain hose there which 
> kinda protects it from getting knocked  dont know if the cockpit drain

> and air bubbles effect it or not - there always seems to be a fish 
> right on the surface :).  Hope this helps. Bob
>
>
>
>
>
>
> >From: "Jim Connolly" <jbconnolly@speakeasy.net>
> >Reply-To: jbconnolly@speakeasy.net,The Rhodes 22 mail list 
> ><rhodes22-list@rhodes22.org>
> >To: "Rhodes-List" <rhodes-list@sailnet.net>,"Rhodes 22 List" 
> ><rhodes22-list@rhodes22.org>
> >Subject: [Rhodes22-list] Depthsounder
> >Date: Mon, 17 Feb 2003 12:42:37 -0500
> >
> >I am at home waiting for blizzard conditions to develop this 
> >afternoon. Forecast here is for less snow than MJM, but still enough 
> >(10-24"). Fortunately, I went to the boat show yesterday. ;-)
> >
> >I've been thinking about depthsounder installation and transducer
location.
> >I didn't see anything about this in the FAQ, but recall having 
> >discussed
it
> >on the list.
> >
> >I've never been a fan of transom mounted depthsounders, but they are
quick
> >and easy, and usually cheaper.  I recall some have mounted them 
> >inside
the
> >cabin, potted in epoxy and shooting through the hull, but where did 
> >you
do
> >this?  What type of trasducer did you use (e.g., does it make a
difference
> >whether you mount a trasnducer intended to be transom-mounted or 
> >through-hull in this manner?  Are there portions of the hull bottom 
> >that are less-suitable for thie (i.e., cored)?
> >
> >Ideally, I would like to mount a relatively inexpensive transducer 
> >somewhere forward of the keel in a safe location in a locker or 
> >beneath the deck.
I
> >would also like to keep it simple and inexpensive.
> >
> >BTW, on my last sailboat, I used the keel as a depthsounder.  I 
> >figure
the
> >R22 deserved better.
> >
> >Jim Connolly
> >
> >_________________________________________________
> >Use Rhodes22-list@rhodes22.org, Help? www.rhodes22.org/list
>
>
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