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Go Back   SailNet Community > On Board > Gear & Maintenance > Epoxy on the prop?
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Thread: Epoxy on the prop? Reply to Thread
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Topic Review (Newest First)
04-20-2012 01:04 AM
sailguy40
Re: Epoxy on the prop?

Quote:
Originally Posted by asdf38 View Post
In general he's talking about some form of epoxy two part coating. Similar to a paint but probably more robust. I don't know what product exactly he might be referring too but I think people here will be able to help.

I wanted to note that the use of the word epoxy has also confused the crap out of me for a while. Prior to boating epoxy was a two part adhesive to me. But it's also a paint and a structural filler. I find it disappointing when the word is used by itself without specifying the type of product.

Even the great books like Don Casey say "fill it with epoxy" - well the 5 minute loctite epoxy at the hardware store? What are you talking about? I was aware that west marine sold west systems (not related) products by the (expensive) gallon but didn't know exactly what to make of it. Having learned a lot more and finally having bought some west 105 (general purpose resin) and 205 (hardener) I finally understand that yes, west epoxy is a sort of do it all solution for filling, bonding fairing etc.
I certainly agree with this. They say use epoxy but no one ever clarifies which of the many to use for the job at hand.
04-19-2012 11:15 PM
Lou452
Re: Epoxy on the prop?

Just read the two posting about PYI. I think I like the advice. I can weld any weldable alloy but even with my skill I recognize the men that do it day in and day out should be the best. I would send my prop to them. The balance issue could be the very big.
04-19-2012 11:01 PM
Lou452
Re: Epoxy on the prop?

newportermike, You need to have some way for all of us gauge how good or bad your prop is. Maybe it is in fair shape? A picture with something for size to compare with like a ball pint pen, a metal rule with a scale. You might find a tire tread gauge. Anyway you can help someone determine how good or bad your prop is. You might try to clean it up with a 4" ss wire brush on 4" grinder. Make sure you wear eye protection!! a face shield long sleeve shirt and leather work gloves. The brush will spin at about 7500 rpm. In 30 min.time one little wire may fly out of the brush they can poke into your skin not bad if you have long sleeves WITH OUT EYE PROTECTION IT IS BAD ! You can find a cheap 4 inch grinder with a 5/8 shaft under 30 dollars. It will work like a champ. You can buy better ones also if you feel you will use it more with the right blades and wheels you can brush, cut, grind metal, stone, concrete. With the brush it will not remove metal. It will help make your prop clean to paint or epoxy. Good luck hope it works out for you !
04-19-2012 10:41 PM
hellosailor
Re: Epoxy on the prop?

Minnewaska may have the best idea of all. If PYI takes care of their customers, they can certainly do what any good welding shop can do, and rebuild missing metal. Since there could be an issue per Lou452 of playing whack-a-mole if there are problems in the metal itself...again, PYI would be aware of that and who knows, they might just replace the blades as defective.

Certainly worth giving them a call & sending the prop in.
04-19-2012 09:02 PM
Minnewaska
Re: Epoxy on the prop?

The folks at PYI (MaxProp) are outstanding. Just pack it up and ship it to them and they will weld back whatever it needs. It takes a couple of weeks unless you tell them you're in a hurry. You definitely can't mess with the balance on a feathering prop.
04-19-2012 08:38 PM
newportermike
Re: Epoxy on the prop?

I just use it when there is no wind!!! So it does not get a lot of use but I will be going on a three day cruise from Boston to Newport and need to know that it won't let me down.
04-19-2012 08:20 PM
newportermike
Re: Epoxy on the prop?

Thanks all. It is a max prop...so replacing it is very expensive. There are some corroded areas, they don't look too bad. Perhaps the Petit zinc barnacle paint is a good reccomendation. Or should I just run it for the season, see how it performs and think about getting a fixed prop next year?
04-14-2012 06:24 PM
LakeSuperiorGeezer
Re: Epoxy on the prop?

Quote:
Originally Posted by Lou452 View Post
LakeSuperiorgeezer, The link you have put in is very good also. Lots of good info on that sight. May I guess you are in the no epoxy club?
I don't know because not enough troubleshooting has been done on the prop. If there is dezincification, the epoxy, even though it is wonder product for may things, will not be up to fixing the prop. Also, what material is the prop made of because brass will have stress in any welds that are done and has to be heat-treated. Nickel aluminum bronze welds ok without stress relief. Come to think of it the nickel aluminum bronze has no zinc in it so dezincification is not possible and is my choice for a propeller. Is there any pink discoloration from dezincification?

By the way, do not use a slide hammer to remove the propeller or propeller shaft. You can destroy the transmission. There are pullers specifically designed for propeller removal that are rather inexpensive and do a good job of getting the prop off.
04-14-2012 05:17 PM
Lou452
Re: Epoxy on the prop?

LakeSuperiorgeezer, The link you have put in is very good also. Lots of good info on that sight. May I guess you are in the no epoxy club?
04-14-2012 12:53 PM
LakeSuperiorGeezer
Re: Epoxy on the prop?

Tap the prop with a wrinch or small hammer. The prop should ring, if a dull thud, you need another prop. The problem is dezincafication

Do not use a fresh water prop in salt water
The problem with brass instead of bronze

http://www.michel-christen.com/2T-H.pdf
Through hull failures with brass
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