"Flying Pig" wrote in message
...
How do your end zincs do on your MP? Mine eat away pretty quickly,
usually - and I also use two collar zincs in the shaft in front of the
line cutter and prop.

However, this last time, the collars were entirely gone, while the cone,
while very deteriorated and partly gone, this time, didn't separate at the
mounting bolts as it usually does.

MP problem has usually been that the mounting points give way before the
mass and it slings off, damaging the bolt still attached, if not changed
soon enough (ask me how I know...)

My Maxprop has no end zincs, just a conical bronze pointy nut. Never any
pitting trouble at all on the prop.
I rarely connect to shore power and never for very long and anyway I have an
isolating transformer aboard so if the shore power has a crappy earth any
leakage to earth from outside my boat will have to find some other way back
rather than through my propeller.