Can I use a NYLON Transducer in a WOOD Hull ???
 

Thanks Tom,

I think my plan at the moment is:

A) Take my nylon mount-in/through-the-hull transducer and put
it in some kind of block of wood to see if there is any place
it will work. It very well may NOT work because of space between
it and the inside of the hull and/or because it won't work through
the ply wood.

B) If the above does not work I think I''m going to install the
nylon mount-in/through-the-hull and mount is through the hull.
I will leave a little extra space for the wood to expand (not
much).

Thanks,
Gary

Can I use a NYLON Transducer in a WOOD Hull ???
 

Gary,
I'd be very cautious about epoxy/fiberglassing the stem/transducer in place.
If, for whatever reason it EVER 'goes South' you WILL have a BIG job {and
possibly HOLE} on your hands getting it out. Better to 'bed' it properly and
inspect it frequently.

On another point - WHENEVER you have a penetration of the hull - get a wood
PLUG that can be driven into the hole and/or fixture. {they come in sets, or
make your own out of Pine or Cedar - a relatively soft wood that WILL SWELL
when wet}. Wire or tie the proper size to the thru-hull and have a
short-handled, stout hammer aboard. If this is the only thru-hull, have it
tied there, as well.

If this sounds strange, check almost ANY book on off-shore sailing & SAFETY
ISSUES.

Regards,
Ron Magen
Backyard Boatshop

"Gary Warner" wrote in message
...

SNIP
I will - whether via glass or other method - make sure the transducer is
in there VERY solidly. I do know that I don't want it coming out and
leaving me with water pouring in.

Gary

Can I use a NYLON Transducer in a WOOD Hull ???
 

Why not mount it on a bracket off the transom under the waterline?

"Gary Warner" wrote in message
...

Thanks Tom,

I think my plan at the moment is:

A) Take my nylon mount-in/through-the-hull transducer and put
it in some kind of block of wood to see if there is any place
it will work. It very well may NOT work because of space between
it and the inside of the hull and/or because it won't work through
the ply wood.

B) If the above does not work I think I''m going to install the
nylon mount-in/through-the-hull and mount is through the hull.
I will leave a little extra space for the wood to expand (not
much).

Thanks,
Gary

Can I use a NYLON Transducer in a WOOD Hull ???
 

On Wed, 6 Aug 2003 13:25:54 -0400, "Gary Warner"
wrote:



Brian,

I haven't seen any of these innumerable notes of which you write...

But thanks...sounds like a good idea. I can build a little
holder for the trandsducer that will have it set still in the hull. If
it works someplace - Great. If not, I can always install it
through the hull later.

Any other tips (or links to info) on how to make this work?

Gary


People have described their tests like this:
1) with a water balloon, place the balloon on the hull, and the
transducer on the balloon.
Can you read the floor at a reasonable depth?
2) Using a dam of putty etc.inside the hull, , pour a little mineral
oil into the dam, and place the transducer level in the oil.
Test for depth reading etc.
3) Using a blob of RTV silicone on the hull, place the transducer in
it etc., etc.

These are not difficult, destructive or time consuming tests.
You MIGHT find some wood hull section that transmits the signal
sufficiently well. People have shot through composite hulls. Wood is
composite!
You have lost a few dollars if not.

Brian W

Can I use a NYLON Transducer in a WOOD Hull ???
 

I haven't seen any of these innumerable notes of which you write...

But thanks...sounds like a good idea. I can build a little
holder for the trandsducer that will have it set still in the hull.
-------------snip-------------------------------

If you want to shoot through the hull you
need to fill the air gap between the
transducer and the hull with something
like mineral oil. the way it's normally
described is to build a little oil tight box
inside the hull, fill it with the oil, and mount
the transducer so it's face is even with
the surface of the water inside the oil
cavity.

You need this 'impedance match' to get
the sound through the hull. I know this
works well in a 'glass hull, but you
can try some of the other suggestions
in earlier appends.

Frank

Can I use a NYLON Transducer in a WOOD Hull ???
 

Gary,

The nylon transducer works fine but I find any applications that use
it to "shoot thru the hull" is not nearly as accurate as one suspended
off the rear of the reansom. After about 60ft of water depth you lose
alot of the bottom profile. There is a reason why the pro's use the
bronze thru hull with the fairing block but it isn't necessary with
transom mount being the next best thing.One other note,If you do use
the thru hull fairing block install, it has to be enough to the
outside and forward enough to not cause cavitation of the outboard.