Stock Eliminator Clutch ?

[Maverick]

Just wondering, how much do you guys slip the clutch. Are you able to slip it in all the gear changes, plus slip it a little off the line?. Can you set that close to where it slips a little in the all the gear changes. Do you dead hook the tire on the start, but slip the clutch?

[Pvt Parts]

Originally Posted by Maverick

Just wondering, how much do you guys slip the clutch. Are you able to slip it in all the gear changes, plus slip it a little off the line?. Can you set that close to where it slips a little in the all the gear changes. Do you dead hook the tire on the start, but slip the clutch?

It depends on the car/motor combination. High horsepower cars slip the clutch to keep from spinning the tires, while lower horsepower cars slip the clutch to keep from pulling the motor down below peak torque. In both cases, it's faster and it's a lot easier on parts.

[Maverick]

I always thought the stick cars wanted to spin the tire a little on the start and slip it in the gears. I thought that is what the pro stock cars do, slip the tire on the start a little. I think the converter cars don't want to slip the tire at all. I just would like to know how easy that is to get the clutch to slip the right amount when you start and when you shift gears. If they can do it.

[tj310]

Maverick, yes exactly right this has been discused many times on the UMTR forum. We have run the same mcleod clutch for three years with several different motors and transmissions. It may not be just " right " but it works for us. ...Thanx Trevor

[Jeff Lee]

Maverick,
In a nutshell, A sindered iron clutch disk when used in an adjustable pressure plate will allow for a base pressure adjustment and counter-weight adjustment. Basically the base pressure adjustment will allow for optimum launch slippage and counter-weight adjustment will allow for optimum slip on gear changes. There is also air-gap settings which determine how the whole process starts. Again, very basic.
And all of these adjustments are dependent on the vehicle, the driving style and techniques used to get from point A to point B so you can count on not using your buddies tune or the one found on the internet. And throw it all out the window for street / strip applications.
I was just reading the paper. I noticed an ad for "free bra fittings". Apparently no pair of boobs can be fitted properly with a one size fits all bra. That applies to clutches. No two boobs are alike here either...

[Pvt Parts]

Originally Posted by Jeff Lee

Maverick,
In a nutshell, A sindered iron clutch disk when used in an adjustable pressure plate will allow for a base pressure adjustment and counter-weight adjustment. Basically the base pressure adjustment will allow for optimum launch slippage and counter-weight adjustment will allow for optimum slip on gear changes. There is also air-gap settings which determine how the whole process starts. Again, very basic.
And all of these adjustments are dependent on the vehicle, the driving style and techniques used to get from point A to point B so you can count on not using your buddies tune or the one found on the internet. And throw it all out the window for street / strip applications.
I was just reading the paper. I noticed an ad for "free bra fittings". Apparently no pair of boobs can be fitted properly with a one size fits all bra. That applies to clutches. No two boobs are alike here either...

I actually ran a clutch set up in G/A (323 @ 2750 lbs) that was all centrifugal - no base, that was fast. (1 win, 1 runner up) I know there was a lot more left in that combination but our focus was in another class. The clutchless transmissions in SS have opened a whole new chapter in the clutch department. If you want every .01 you can get, you're gonna need a computer (Ex: Racepac), a machine to cut your own discs and a lot of testing. Watch the comp racers. Even on a redlight or a bye, they will run it out the back not only for lane choice but to get the clutch graph. There's a lot of et in the bellhousing if you're willing to go after it.