Sealife
Guru
Currently my 42 Krogen has a 12kw Westerbeke (way too big) to drive a hydraulic get home (spinning main shaft). Seems from PO paperwork to never have worked well.
I have looked at several "electric back up propulsion" solutions, and am not satisfied for one reason or another. I plan to venture to South America etc. (hence the want for axillary propulsion).
My thoughts are:
Instead of $$ for new gen, new wing engine, etc. Why not use the wing engine to drive a 5-8kw belt drive gen. This would keep the wing regularly exercised and kill two birds with one stone, still having the mechanical propulsion.
Sizing:
Yanmar has a 15, 20, 30. Most Krogens have the old 27. (First hand experience please chime in on performance) my thoughts are 8KW = 10hp if 746 watts = 1 hp minus losses etc. So to keep wing properly loaded in gen mode, I'd prefer the smaller yanmars. Relizing no Krogen Lehman owner ever admits to actually using the wing for propulsion, the smaller engine would probably be fine. This boat pretty much coasts down wind.
Please keep your response to first hand knowledge, experience and not speculation.
Thank you
I have looked at several "electric back up propulsion" solutions, and am not satisfied for one reason or another. I plan to venture to South America etc. (hence the want for axillary propulsion).
My thoughts are:
Instead of $$ for new gen, new wing engine, etc. Why not use the wing engine to drive a 5-8kw belt drive gen. This would keep the wing regularly exercised and kill two birds with one stone, still having the mechanical propulsion.
Sizing:
Yanmar has a 15, 20, 30. Most Krogens have the old 27. (First hand experience please chime in on performance) my thoughts are 8KW = 10hp if 746 watts = 1 hp minus losses etc. So to keep wing properly loaded in gen mode, I'd prefer the smaller yanmars. Relizing no Krogen Lehman owner ever admits to actually using the wing for propulsion, the smaller engine would probably be fine. This boat pretty much coasts down wind.
Please keep your response to first hand knowledge, experience and not speculation.
Thank you