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post #14 of Old 02-04-2014
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Re: Anti-Fouling Paint on an outboard?

Originally Posted by pdqaltair View Post
a. Unless you've figured out how to paint the inside of every passage you'll get growth inside. On inboards there are 2 differences; the passages are larger to allow for this; when the seacocks are closed there is no oxygen in the water and this tends to kill everything.
Seeing some outboards in the water all the time I have often wondered about the insides of the passages becoming plugged up? Doubtful that they could ever be un-plugged?

b. If something grows in there, you might just need a new engine. And something will.

c. Try this expereinment. Wrap some duck tape on a couple of blades, not floppy but not skin tight. Feel the vibration and note the loss in speed. It doesn't take much on a high speed (relative to inboard props) prop to desroy the flow.

I really don't think you want to do this. I'm not sayin' you can't, I'm just sayin' you'll be worse off.
Paul T
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