Shaft is big, and it is also towards the boat from the prop. So the electricity flow is from shaft to prop to water. This prevents much corrosion occuring at shaft. Pins are small and they are between prop and water, so since stainless is less noble than bronze, pins will act as sacrificial anodes and may dissolve relatively quickly.ah..so they did not advise me of that when I called them last year.
so help me understand if electrolysis is an issue - how come the stainless shaft does not appear to have any electrolysis issue?