One caveat though, if the transducer is equipped with a temperature
sensing
device it will measure the temp of the hull surface it's attached to, not
the water.

Excellent point.

--Mike

"Bishoop" wrote in message
...

"MGG" wrote in message
et...
On my last boat, I mounted it inside and it worked great. You *may* need
a different type transducer though...read the instructions.

If you want to mount it inside, it's best to test a few locations first
to see what works best. I did this by filling the bilge w/ enough water
to cover the unit, then I weighed it down with some ankle weights. Go
cruising and see how it works. If need be, move it to a new location and
try again. Once you find a nice spot, mark it and pump out the water.
Mounting it is done with SLOW set epoxy, and a large amount of it. It's
important that you use slow set (4 hrs or longer) as it will release any
air bubbles caught in the mix during the slow curing time. If there's any
air between the transducer or the hull, accuracy will suffer or it won't
work at all. That is why you need to submerse it in water in the bilge
while testing.

Hope that helps a bit.

--Mike

"Melandre" wrote in message
ups.com...
Inside??? Isn't it supposed to touch the water somehow? Does the
accuracy suffer? The boat has a fiberglass haul: it is just your
typical 18" Bayliner runabout with I/O Mercruiser... Nothing fancy.
Andre

Good tutorial on installing the transducer inside a fiber glass hull.

I highly recommend installing it using that technique.

One caveat though, if the transducer is equipped with a temperature
sensing device it will measure the temp of the hull surface it's attached
to, not the water.