Removing a transducer

[simonfraser]

2000 vintage, plastic transducer through solid GRP

I can cut a central hole into it and chop / saw bits off it

Just saw a vid with some one applying heat to the outside then bashed it out from the inside, took 5 mins
I've got an electric heat gun

Suggestions please

 

[jimmy_the_builder]

Are you replacing it, or just getting rid of it?

 

[jfm]

They're normally put in with polyurethane sealant and that softens when hot so heat gun is good idea. A heat gun makes easy work of bronze fittings because the metal conducts the heat but I'd expect it still to be a bit useful on a plastic fitting. Will destroy the fitting of course.

 

[MapisM]

Assuming that the boat is on the hard and that you don't mind destroying the transducer, I would try grabbing the thing with some tool and turn it on its axle.
If you get it to move, it's practically job done.