I believe that the pully is 3.9 for the amout of wrap see picture above in the post.

 

shoot! I just spent alot of time writing a whole reply and it said my file was too big, deleted everything I wrote


I got the system from willie, he got the cogs and stuff from assc racing, ltd.

 

fan.

ok? it let me post that picture but, not my drawing?

well long story short it is the motor from a cheap universal autozone fan. I welded one of the hex washers that come on that cheap fan to the large disc mounted on the factory fans (I can't post my picture so you will need to remove the factory fan blade to see what I mean)

any way I had to grind it smooth again or the blade would wobble on the new motor.

I cut out the shape of the new motor on a aluminum plate (1/4") and used bolts and mounted it to the factory bracket, although it looks like it is off in the picture the fans are the same depth

if you look real close in the pic. you can see the motor and aluminum plate there was more detail to it but, with out pictures I don't know how else to explain it

sorry but, I suck at posting pictures

 

Movie clip of the tensioner in action at idle........

http://www.tacs.nu/forum/download.php?id=6574



/N.