Plum
Well-known member
The only way to connect my hull anode studs to the propshaft is by using a carbon brush. There is very poor continuity (high resistance) between gearbox and output flange and no exposed external shaft to fit an anode direct to it. I have tried using a pair of 11mm X 6mm cross section electric motor brushes but the electrical resistance of the brushes is too high (10 ohms top to bottom) and the resistance between brush and shaft is too high (over 100 ohms even after cleaning and motoring for many hours) so I need to source some very low resistance brushes. I can't find any brushes for sale that have a specified resistance. Should I be using copper rather than carbon? Any advice?
I have 0.0 resistance between the studs and the copper braid attached to the brushes.
Www.solocoastalsailing.co.uk
I have 0.0 resistance between the studs and the copper braid attached to the brushes.
Www.solocoastalsailing.co.uk