Zincs for Max Props

[Faster]

I've been lucky enough to score a 3 blade max prop, exactly the size recommended by PYI, and matching shaft size too, for a steal of a deal.

However the prop zinc is gone, of course, as are the fasteners for it.

Two questions:

In West Marine, the "PYI" zinc is $100, the generic knock-off $15. Is there value in going with the original?

Do they specify bronze or SS bolts to hold the zinc on?

[Fstbttms]

Originally Posted by Faster

Two questions:

In West Marine, the "PYI" zinc is $100, the generic knock-off $15. Is there value in going with the original??

No.

Originally Posted by Faster

Do they specify bronze or SS bolts to hold the zinc on?

Use stainless.

[speciald]

Goto the PYI web site. They sell the screws - stainless with hex heads and the proper thread. They also sell a "box" with a number of zincs and the needed screws. $100 sounds like alot for one zinc. A box of 3 - 83mm zincs + three screws is $55 on their site.

[Fstbttms]

Originally Posted by speciald

Goto the PYI web site. They sell the screws - stainless with hex heads and the proper thread. They also sell a "box" with a number of zincs and the needed screws. $100 sounds like alot for one zinc. A box of 3 - 83mm zincs + three screws is $55 on their site.

The West Marine Max Prop "kit" includes two zincs, fasteners for both, allen wrenches and sandpaper. But it's still an outrageous price.

[Faster]

Thanks much gentlemen...

[PorFin]

Originally Posted by Fstbttms

The West Marine Max Prop "kit" includes two zincs, fasteners for both, allen wrenches and sandpaper. But it's still an outrageous price.

FWIW -- West Marine's list prices are indeed steep, but with a little work (and a printer) you can save yourself some cash by taking advantage of their price matching policy. Print out a copy of the listing of the best price you can find on the item you want, then (politely) challenge the price at the WM check-out counter. I just replaced my dinghy's Aqua-Signal portable all-round light, and the local WM matched Defender's Winter Sale price which reduced WM's price by almost $10.

Of course, we may be talking apples and pomegranates in this case if WM's prop kit is something they package in-house.

BTW: I'm not affiliated with WM, just an all-too-frequent customer.

[wwilson]

Faster,

I bought 3 zincs each from the following two sources some years ago. I haul annually and keep the zinc from the prior season for comparison. There is virtually no difference in wear: each about 30% in a season, most of that around the fitting screws area. (I will be interested to try this season the plastic liners mentioned recently in another thread.)

PYI Inc. Max-Prop

Max_Prop_Propeller_Zinc_Anodes

[Fstbttms]

Originally Posted by wwilson

(I will be interested to try this season the plastic liners mentioned recently in another thread.)

I don't personally understand the rationale behind using the screw liners. The screws aren't causing the depletion of the Max Prop zinc in that area. The zinc depletes from the surface inward. The reason the Max Prop zincs deplete at the screws first is that the material is thinnest at that point.

[saildog1]

try boatzincs.com they are about $7.20 for the one I use on my 3 blade maxprop. They also have the screws for a few bucks. I buy from them every few years to get the free shipping.

[wwilson]

Originally Posted by Fstbttms

I don't personally understand the rationale behind using the screw liners.

Yeah, I don't either but you have seen the posts.