Have you tried scrounging round your boat yard for cast-off anodes then smelting them down and casting your own? /forums/images/graemlins/grin.gif
--------------------
"Artificial intelligence is no match for natural stupidity"
Don't risk an expensive prop etc with cheapo anodes IMO, the ratio of risk to pennies saved is too great. There are some shaft anodes for example that when they waste away become loose on the shaft, rattles followed by a diver or a lift out ensue, cost? I just changed our pear shaped one before we launched Tuesday, despite there being enough left in the old one to do another year, because who knows if the wastage rate might increase because of some unforseen new factor, our Brunton prop would be very costly to replace! I bought 2 anodes at 'old' prices to hedge against next year's price too and declined a cheaper version of the usual MG Duff which (same length and bolt holes) contained less zinc.
Robin appreciate your concern, and I was careful to insert the word 'quality' into the title. I too have a high regards for my prop, gearbox and anything else in the galvanic path of corrosion.
[ QUOTE ]
Robin appreciate your concern, and I was careful to insert the word 'quality' into the title. I too have a high regards for my prop, gearbox and anything else in the galvanic path of corrosion.
[/ QUOTE ]
OOPs /forums/images/graemlins/blush.gif, sorry Jim didn't read it fully! Still the dodgy ones are not that obvious when they are on the chandler's shelves. I wouldn't have known about the shaft ones for instance except that a friend had this 'orrible knocking from underneath his boat under power, turned out he still had 3 blades on his prop but the anode was loose to the point of falling off and was banging on the 'P' bracket the diver said.
Yacht Parts in QAB wanted £31.00 (yes 31) for a McDuff pear shape. Got one in Sutton harbour for £18.90 and they had loads. Marine Super Store (online) do them for £15.00ish. If you buy 50 quids worth of sstuff (not difficult) postage is free.
Same thing happened to a fried of mine, except the knocking only happened when going astern. The anode was slipping back in one direction to bash something, never sure what. No damage, just very noisy and a little alarming!
I tried a cheaper shaft anode last year & it wasted away around the nut so it became loose & as the nut turned with the screw I ended up sawing it off with a hacksaw.This year I have gone back to McDuff anodes which I have never had a problem with.I think I will stick to the McDuff for the sake of £7/8 pounds or so.
Now I need to know how you tell quality in an anode. Take two anodes, from different suppliers. Both cost about £18. Which is best? I've never seen a list of ingredients on them. 'Zinc' isn't obviously 'zinc' in all cases?
I may have missed the answer in previous posts... but dont think so.
Trick Question I fear.
Well, I am either looking for a good name (say like MG Duff) being traded at below bid/offer spread, or a recommended source with personal experience of performance and value.
You are indeed correct in asserting that all that glisters is not Zinc. I would be looking for 18 to 24 carat Zinc, maybe less assay mark, rather than the Ratners 9 carat variety.