[alberg30] Re: Internal transducer bubble mounts- anyone used them?

[sunstone]

From: sunstone <sunstone at idirect.com>

Thomas:

I agree with Russ, but in addition, when siting the transducer put it in
a plastic bag filled with water and put it in the area you want, then
move it around against the hull until you get the strongest signal.  
When you are satisfied that the spot on the hull you've chosen gives the
best signal mark the spot on the hull and glue up the PVC making sure
you have a good seal.   Add mineral oil and voilà.   

Q: Why the bag of water?

A: To find any voids or air bubbles in the laminate which would
degrade    the signal.

Ours is sited to port of the centre line by about 6-8" under the "seat"
(ha!) between the V berths.

Fair winds,

J B,  Sunstone KC-65

Rap1208 at aol.com wrote:
> 
> From: Rap1208 at aol.com
> 
> Thomas,  Yes, the oil filled tubes work well, mine came with the boat, but it
> was for a 'fish finder 'type.  I pit in a Datamarine.  had to unseal the top,
> and refill with oil.  It's just a fiberglass tube, but I don't see why a pvc
> tube wouldn't work as well, if it was big enough. Just shape the bottom to
> fit the hull.  Mine is under the port berth, just behind the drawer
> I just used mineral oil from the drug store.  Less underwater drag, less
> worry  (one less through hull fitting)  Russ Pfeiffer
> 
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