Quote:
Originally Posted by Daox
Then it would be an overdrive pulley.  The benefit would come from reduce rotational mass, but it wouldn't really be anything you'd see when you fill up. As far as alternator output, it would have more output at lower engine RPMs since it woudl be spinning faster. However, since it is spinning faster, the brushes and bearings would wear faster... Depending on how large you go, it may not be designed to handle the RPMs you spin it to if you rev up the engine. |
I think actually the alterator will spin more slowly when it has a larger pulley. The crank pulley remains the same size, so a larger alternator pulley will spin less than stock and a smaller pulley than stock would spin more in order to "keep-up" with crank pulley's RPMs. So if it were larger and lighter, I should be reducing rotational mass and reducing ware on the alternator as well as its load on the engine and its output. Right?
