Clutch guys

[weedburner]

Originally Posted by joespanova

I have to side with the SS/AH guys on this......maybe there are some scenarios where you'd have launch and stripe at the same RPM but I had to question that suggestion as well. I would never do that either.

They may be "adjustable" clutches, but they don't give you enough adjustment to allow taking advantage of a max rpm launch and then still hold after the shift into high gear. You can adjust them for one or the other, but you can't have both. A centrifugal assist clutch needs that rpm difference between launch and shift rpm as that is what allows for a softer hit during launch while then keeping you from blowing thru the clutch in high gear. That's just a limitation that comes along with using counterweight to add clutch clamp pressure.

A clutch that is all static is even worse, until you add the ability to control throw-out bearing position during launch. The ability to adjust clamp pressure during launch changes everything. It allows you to add more area under the rpm trace during launch without blowing the tires off. Also allows you to add more area under the rpm trace after the shifts, which in-turn reduces the intensity of wheelspeed spikes.

Some guys get it, some don't.

A quote relayed to me from Ralph of Total Venue Concepts (NHRA/NMRA/NMCA track prep)- "all clutch cars should have a 'tamer because they don’t rip the **** out of the track!"