The sacrificial donor metal I have weighs 2.4 ounces.
It isn't covering up the bottom bracket drain hole, it is behind my kickstand.
All that matters is if there is a voltage potential.
Boats move.
Air conditioners in humid salty air are stationary.
Yet both benefit from a sacrificial donor metal.
"... I fear the larger hole may be more of an invitation for water to splash in to the hole and gunk up your bottom bracket bearings."
Possibly so.
Has anyone offered what the dimension of the hole at the bottom bracket should be?
And can they tell us how they reached their conclusion?
Last edited by ArmChairRider; 09-12-16 at 09:20 AM.