Hi,
Having a non folding prop, I'm considering a Propshaft alternator.
I must say the PRN-gearbox produces a substantial resistance even
disengaged.

In order to reduce wear of the gearbox and in order to make the
propshaft alternator a lot more efficient, I would like to be able to
disengage the gearbox while sailing.

In my view it would involve two extra bearings and an easy to operate
clutch built between two parts of the shaft (40 mm diam).

Has anyone ever tried this or seen it somewhere?
Or has ideas/comments about it?

Thanks, Len.