Underdrive pullys, which one?
05-25-2006 | 01:10 PM
#42
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 16
From: BFE
Originally Posted by mean02Z28
I've had the March pulley on the car for about 2 years now - never thrown a belt. I'm very happy with it.
I favor the March pulley because it is an actual dampener, not just a pulley. Also, the extra weight of the March unit is irrelavant, as mentioned earlier, because it is rotational mass that matters. In the case of the March, the fluid in the pulley does not necessarily turn with or at the same rate as the body of the pulley. So really, the body of the pulley is rotating, with the fluid inside almost stationary - therefore not contributing to rotational mass.
Chris
I favor the March pulley because it is an actual dampener, not just a pulley. Also, the extra weight of the March unit is irrelavant, as mentioned earlier, because it is rotational mass that matters. In the case of the March, the fluid in the pulley does not necessarily turn with or at the same rate as the body of the pulley. So really, the body of the pulley is rotating, with the fluid inside almost stationary - therefore not contributing to rotational mass.
Chris
