LM27 Prop corrosion

[paulsailing]

I found the prop starting to de-zinc as I was cleaning up prior to antifouling, although the damage is slight (at the moment). I considered fitting an earthing cable across the coupling but from what I can check with a meter the connection through the gearbox is not very good. MG Duffs electro-eliminator seems to be a good option but on checking there is not enough shaft exposed to fit one. Have made one to fit from a set of brushes from an old alternator and bits! Electrically it seems to provide a good connection and is significantly cheaper - long term I will wait and see.