settimo velo
Contributing Member
I'd like to antifoul my Alpha sterndrives which are fitted with stainless props and protected by the Mercathode system. The boat will be used in a high fouling area and kept afloat for extended periods, so it is not going to be realistic to leave the drives untreated.
Mercruiser recommend leaving a 1" gap between the hull antifouling and the gimbal. I assume this is to prevent electrolysis between copper based hull antifouling and the gimbal and drive. So, what is best practice? Use a copper based antifouling on the hull, leave the 1" gap and apply a sterndrive antifouling to the gimbal and drive? Or, apply sterndrive antifouling right across the transom? What do you do with stainless steel props, antifoul them or leave them untreated?
Mercruiser recommend leaving a 1" gap between the hull antifouling and the gimbal. I assume this is to prevent electrolysis between copper based hull antifouling and the gimbal and drive. So, what is best practice? Use a copper based antifouling on the hull, leave the 1" gap and apply a sterndrive antifouling to the gimbal and drive? Or, apply sterndrive antifouling right across the transom? What do you do with stainless steel props, antifoul them or leave them untreated?