Re: Source for shaft alternator
toggle quoted messageShow quoted text
The reinstallation of a shaft generator seems like a simple project.
You would need to know the speed of the shaft when cruising. Once you have that information, I would go to a shop that rebuilds alternators and ask what speed you would need at the alternator to produce electric. You can then figure out how large the pulleys you will have to fabricate make the alternator run at the desired speed.
I would think you could get an alternator that outputs between 50 and 80 amps. You would also have to know if your boat has an isolated bonding system and if you need 24 or 12 volts for your primary bank.
Then it is just a matter of fabricating a mount for the alternator and an adjustable arm to tension the belt, as well as making a circuit to energize the alternator on initial startup.
Attached please find a photo of a C drive Yanmar with a shaft generator and a serpentine belt.
The alternator in the photo seems to have a very big pully mounted to the shaft since it is after the transmission.
Kimberlite Amel Super Maramu #376
From: main@AmelYachtOwners.groups.io On Behalf Of marklesparkle59
Lance this is a photo of my Shaft generator, from 1983. I have not got anything out of it yet and will soend some time tomorrow checking the connections. I also have a switch inside the cabin. If I can provide any info please ask.