My replies from Hempel....
Neil
Firstly, thank you for your Hempel purchases. I’m glad to hear you’ve had good results with Hard Racing. As for your transducer, if the unit is bronze you should be ok, the product shouldn’t interfere with the workings at all, if you’ve got a nylon/plastic transducer I have concerns that the solvents in the Hard Racing, which are quite aggressive, may damage the unit.
I’ve attached a copy of our paint manual which should answer any of your questions but, please do feel free to contact me directly if you’ve any further queries
Regards
Adrian
Hi Adrian
Many thanks for your swift response. Yes the transducers are of a plastic construction. I realise that AF’s of old were more “toxic” than the newer green versions. So, are there still a lot of corrosive chemicals in the new variants ? I thought most were more water based so less fierce?
Neil
They’ve certainly reduced the “nasties” in antifoul, but they’re still essentially copper, pigment, resins and solvents. They’re all solvent based I’m afraid, and it’s those bits that concern me with a plastic txdcr. I’ll check with a few yards I know and see what experience they’ve had, it must be a fairly common issue. Give me a few hours and I’ll get back to you
Neil
Just checked with a couple of applicators and they’ve all overcoated plastic txdcrs without any issues. It’s probably worth testing a bit before proceeding though
Good luck
Ok, thanks Adrian. Last question.... do Hempel do a primer specific for plastic ? In your booklet only metals, Grp and woods are mentioned!
Neil,
You can you Light Primer on many plastics, only use a thin coat as the solvents are strong. If you’re using this on your transducer you’ll also need a thin coat of Underwater Primer as a tie-coat between the 2.