This is a job well designed to turn the air blue and to teach others very colourful expressions.
Does anyone have a tip or trick to make this job easier than brute force applied to a cold chisel? (This is the latest advice I received from Steve at DMI…)
Thanks in advance,
Bill Baxter
Persistence NS30 #507
Penetang, ON
Hi Bill, if the hole needs to be larger insert a tapered wooden plug from the outside and drill a larger hole. That simply cuts the old housing out.
If the hole is to be the same size cut off the flange from the outside. Insert a long bolt with a large washer inside the boat and a wooden frame outside the boat. Before you start pulling heat up the through hull to soften up the sealant. Once heated up start turning the nut on the bolt slowly so that the outside gelcoat is not damaged. Repeat as needed.
Good luck…Ron
Ron & Diane Schryver
“Alpha Waves” '87 NS30U #393
Georgian Bay, Midland Ontario
My recollection, is when I installed new instruments, is that I placed a block of wood on the sleeve and jumped on it to free it from the hull.
Joe Valinoti
S/V IL Gatto NS30U #221
Sea Harbour YC
Oriental, NC USA
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Hi Bill, My old transducer had a bronze sleeve, I cut a 30 degree segment with a jigsaw, removed it with a screw driver, deformed the rest and easily knocked it out. I would do the same if it had been a plastic sleeve. Good luck.
Jorgen Moller
Pondus. NS26C #33
Toronto
On Tuesday, May 16, 2017 at 2:14:36 PM UTC-4, Bill Baxter, Persistence, NS30 #507, Kingston ON wrote:
Thanks all for the feedback… wish I had thought of Ron Schryver’s solution… but brute force and ignorance prevailed in the event.
Bill Baxter
Persistence NS 30 #507
Penetang ON
Bill,
Would you be willing to share your method? What seems to be the problem with removing these transducers? How are they fastened to the hull?
Tim on STL
White O’morn NS26U
Hi Tim,
Not sure what the adhesive is-- but after 25 years it’s like cement. Removal in my case was a question of relieving some of the volume of the ‘plug’ and convincing the remainder to cooperate with significant blows to a cold chisel – the resulting hole needed some fairing before I inserted the new unit, but the finished job looks promising.
Bill Baxter
Persistence NS30 #507
Penetang ON
I do not understand everyone’s problem with removing these. I popped mine out by pulling the actual transducer out of the sleeve, handing my soon (then about 15 and 115#) his Game Boy to occupy himself and told him to step on the sleeve while I worked a putty knife around the edges of the thru-hull fitting while sitting on a 5 gal bucket outside the boat. Every now and then I told him to shift his weight fore and aft. We could of skipped the Game Boy - the sleeve popped out after about five minutes of cutting into the 5200 or whatever it was. Once you get it started, it goes really fast.
lloyd herman
Rendezvous, 30U
Port Washington, NY