Props Coated with Salt??
 

Recently bought a new set of Bravo props, have put only about 15 hours of run time with probably 30 hours of total time in salt water since install. Props and drive shower tubing has the same crust as in this pic. Any thoughts on what could be causing this?

Thanks,
Rickhttp://i847.photobucket.com/albums/a...hevss/prop.jpg

Try lime away or CRC. Then rinse good. Works great for the high calcium and alkiline water at Lake Havasu.


dave

It's just mineral deposits. Spray it with some CLR, Lime Away, or Sno bowl toilet cleaner and rinse well.

yea...the salt water, rinse well with fresh water after every use

Do you have any zincs on there?

that isn't really 'salt' it is from 'hot' water. i.e., water with electrical current in it. Wherever you dock your boat is screwed up, which is pretty common on canals and older marinas.

I see you're in Palm Harbor so we pretty much boat in the same waters. I don't have anything like that visible on my gear ever. I'm going with Vette's theory of stray current. It looks like electrolysis deposition.

Make sure you have an Anode on your drive.

If the boat ever stays in "Home Port" I heard thery are bad for current in the water....

Stray currents usually burn propellers removing material. However, deposits can form pre burning. Deposits can appear from high mineral contents or from cavitation. If the problem turns into porosity, there may be a shore power issue. If the porosity only occurs on the prop, it is most likely cav. burn. There are units called galvonic isolators that redirect the current to ground and save props, lower units etc. if there is stray voltage at your dock.

Brett

Marina (which is pretty old) is on the Anclote River which is one of our more polluted bodies of water on the west coast- or maybe it just seems polluted due to the murky brown color, 3 eyed catfish, and the Superfund site (old Stouffer chemical plant)

Sounds like I need to clean and polish the props and then watch for the development of any porosity issues.

Thanks everyone,
Rick

do something before the perosity occurs....
after is to late