Jump to content

Max size alternator BMC 1.8


Featured Posts

You say second alternator, so are presumably also going to be retaining an existing lower powered on?


What current is that, and do you plan to use it just for starter battery charging.

I think the issue with ones as big as 100 amps will not be so much the load they place on the engine, but coming up with pulleys and belts to drive it adequately.


Generally people seem to thing only up to about 70/80 amps is really sound with a standard 10mm "V" belt.

Edited by alan_fincher
Link to comment
Share on other sites

Yes, I have a 30amp standard alternator at present. I have a triple crankshaft pulley from Calcutt boats, so each would be driven separately.


I'd heard that 70-80 should be around max for a 10mm V. But I've also read that a 100amp alternator won't crank nearly that amount at idle/low revs.


In case it makes any difference, I have a 180amp sterling alt-batt charger. I'd quite like to use as much of that 180amps as possible!



Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.