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Old 20 November 2003, 07:58   #1
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Prop Maintenance

I carry, on-board, a spare stainless steel prop.

How can I "polish" it so it looks nice and presumably works better?
And, should I then spray something on it, to keep it in pristine condition and to protect it from the general dampness?
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Old 20 November 2003, 08:05   #2
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I am sure theres more people with more and better solutions than me. But in the tradition of Alan P tile polish treatment then olive oil is remarkably good at claening stailess steel

more marketable solutions would be wd40 and duck oil for preserving and there bound to be something in the chandlers for doing stainless steel properly.
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Old 20 November 2003, 08:30   #3
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Brian, get yourself liquid cement cleaner from any hardware store - it is very strong - dilute it 50/50 or a slightly stronger ratio mix if required. Simply stick the prop in this mixture and you will be amazed at how readily every little bit of dirt, corrosion etc, etc comes off. The longer you leave it the better the results.
Once you are satisfied that everything has been removed, rinse in clear water and dry properly. Polish it with any good car polish and store. It is not necessary to use any oils or such like as this treatment would suffice.
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Old 20 November 2003, 09:34   #4
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Charles

Will this work on other metals as well,

Stuart
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Old 20 November 2003, 10:53   #5
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Managed to loose 2 knots polishing and very lightly touching up the edges on mine why ? don't know, although agreed it was on different days and conditions.

Might be a useful thing to do just before selling a boat though.

Pete
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Old 20 November 2003, 11:06   #6
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Quote:
Originally posted by thewavehumper
Charles

Will this work on other metals as well,

Stuart
Stu, don't know is the short answer. I have only used this on my s/s props.
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Old 20 November 2003, 12:15   #7
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Concrete cleaner

Can confirm that concrete cleaner works on Bronze props as well.
- Will be good for the new VP propellers.

Don't know about aluminium though.

Duncan
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Old 20 November 2003, 12:44   #8
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We use coke for cleaning brass artifacts from wrecks - its amazing how versatile that stuff is!!

Be careful cleaning with acidic or corrosive liquids - I have heard a nasty story about a guy cleaning stuff with brick acid who forgot to wash his hands and got 3rd degree burns somewhere he shouldnt.

Ricky
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Old 20 November 2003, 16:42   #9
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Re cement cleaner on s/s this sounds an interesting solution but I'm not sure about the long term affects on the rubber bush, but I see that Brian has a Bravo 1 leg so may have the flo torque system so would be able to remove all the bush from the prop before treating it this way. Be very wary of using this system on aluminium props as I think cement cleaner is caustic based, but I'm not sure.

Once cleaned I would advise that you do cover the with some sort of spay to protect it as some brands of propeller are more prone to corrosion, especially inside the hub, you can spray with "corrosion guard" which is supplied by Mercury for protecting propellers, although there are loads of other products on the market which leave a film over the surface.

A polished prop certainly looks nice but it will not work any better, damage is the killer of performance, however minimal it may seem, so the prop should be checked for any signs of damage to keep it in tip top condition
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Old 20 November 2003, 17:10   #10
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If your prop is in less than perfect condition, how do you remove all those pits and abrasions and would you dress the edges to a knife edge or leave slightly blunt?
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