Hello!

I've got an old, cheapish diesel generator that is pull start. I'd like to make it electric start as it is destined to replace a large BMC 2.2 diesel in our boat and will therefore not be in pull range. After reading and reading I came across this post

"If you know a guy who can do motor controls, all you need is a 12v battery and a couple inexpensive relays and a little time and you can turn the AC motor into a DC Shunt motor if there is access to the Terminal Tap Can. This is how most old generators were started. It turns the Electric Generator into a motor temporarily and switches back to a generator after the motor is started. It is an easy install within the hour."

That was here: http://bit.ly/GATEP8

I've emailed the poster for diagrams or further information with no reply. I've been doing a little digging into the original 'self-start motor' the predated the modern starter motor and it seems that on the outset I could use my electric motor to turn over my diesel.

Is this possible and does anyone know about a wiring an 'AC motor into a DC Shunt Motor'? I'd appreciate the help.

Thanks!

Nathaniel

 

Most DC generators make good motors, but alas- most " generators" are now alternators which are dificult to convert to motors??

 

Hunt around for a Bosch Dynastart, they are a generator startermotor & belt drive. Commonly found on older Volvo diesels in boats single & twincylinder.

 

Thanks Daryl,

Belt driven dynamo/starter is what I'm looking for then. Looks like there a many for golf carts and the like, dynastarter, etc. So then I'm looking at putting a pulley on/near the flywheel and fabricating a mount for this... Don't know what would be better as a replacement geared flywheel and starter/solenoid are available...

 

Ahhh. What it looks like is a BAS or BSG, looks like GM and others are including it on some newer vehicles. Guess its now a question of the type of motor, PM, Shunt, I imagine something continuous duty that outputs a manageable voltage at whatever RPM the diesel operates at, 3000 i think.