Hi guys,
I have a 42' 12 ton (overweight) 1990 Catana catamaran. I replaced one of the Volvo Penta 30+ year old 2000 series model 2003 motors when it broke an unobtainable crank. I ended up installing a Thunderstruck AC34. I had a new aluminum bracket made and mated the electric motor shaft directly to the input shaft of the Volvo 120 sail drive.
We currently have a 48 volt 200 amp hour Li battery bank which is sufficient for an hour or 3 at a time at pretty much full power (5+ knots) before we need to start getting power back into the system. This will get us in and out of marinas, docks, moorings etc with no issues. With our current generator charging ability we can run at about 3 + knot indefinitely or until out of diesel.
I made several missteps along the way but am now very pleased with to overall project result.
About all I would like yet to do is make a new shaft extension from the VP sail drive vertical shaft, a new plate for the sail drive front face, a new plate for new top plate for the new vertical shaft, a new bracket for the electric motor to allow it to be moved vertically and oriented to the new shaft. This would reduce some friction and allow use of the original motor throttle. Currently I have to use the electric motor in only one rotation and shift forward and reverse using the sail drive transmission.
Huh, just thinking about it while writing this I now have a sail drive question I'll need to research. Could I have a new shaft vertices shaft with a bevel gear made that would be the correct length to meet up with a new or use the existing horizontal input shaft allowing me to get rid of having to shift forward and reverse using the clutches and gears of the VP sail drive? Any thought would be appreciated.
Cheers,
Ric
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