overrunning alternator pulley??

[Cracker]

The idler pulley on my truck crapped out and I was searching here for a steel replacement source, unfortunatly my local NAPA went under last year so I went googling and found something interesting.

NULINE ENGINE PULLEYS out of Australia makes just what I was looking for and it was only $16 to boot as special order from Oreilly Atuo Parts. While surfing there site I found OVERRUNNING ALTERNATOR PULLEY's and a video and thought it looked interesting and was wondering if anyone else has seen or used them?

Here is a youtube video from NuLine showing the overrunning pully in action

http://youtu.be/OR0WEK3JEO4

 

[Wicked97]

Military hummers use them and they work great. Totally eliminates the galloping belt.

 

[icanfixall]

So I'm wondering if this will stop the v belt alternater belt mess we have all come to hate. Hate to the point it made me Change to the serpentine belt system... I'm much happier now with only one belt under my rear seat...

 

[firehawk]

Overrunning alternator pulleys are just a one way bearing. They still see shock loads, and they fail before the idler pulley does in the ones I have seen, and good luck finding a replacement. Replacement bearings are not available for vehicles that comes with these stock and replacement alternators use regular solid pulleys. On my wife's Jeep, I replaced the alternator with one that was solid.