Clutch Durability?
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Originally Posted by NineBall
seems to be holding up okay with 550 rwhp. I haven't had it slip once yet, 7K on car, 1K on supercharged setup.
I'm surprised
I'm surprised
Please describe the launch rpm and clutch release you're using.
TIA,
Ranger
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Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Originally Posted by Mr.Big
620RWHP here and several thousand miles (driven hard on street tires) at that HP level... We originally said 1000 miles would be the over/under bet... I'm AMAZED!!!
Jeremy
Jeremy
Ranger
Le Mans Master
Joined: Aug 2000
Posts: 5,529
Likes: 1,943
From: Austin Texas
If you know how to drive a clutch, you can expect 80,000-100,000 miles from the device. If you don't you might not get 1,000 miles out of it. Same clutch, same car, different drivers.
The way to make a clutch last is to never put (much) power through the clutch while it is in the friction zone.
At startup, you can toe in the least bit of gas and let the clutch out smoothly and smartly and the car will simply take off with negligible damage.
Shifting up, there is a particular timing where the throttle comes out, the clutch goes in, the shift is performed and the cluthch comes back out that will enguage the engine (as it decelerates) and hit the next gear with the engine at the proper revs. This induces absolutely no clutch weear, the time taken is right around 0.65 seconds.
Shifting down, you have to give the throttle a blig blip whild downshifting so that as the clutch comes back up, the engine is at the proper revs. A nice 0.15 second stab at the throttle works for me.
The way to make a clutch last is to never put (much) power through the clutch while it is in the friction zone.
At startup, you can toe in the least bit of gas and let the clutch out smoothly and smartly and the car will simply take off with negligible damage.
Shifting up, there is a particular timing where the throttle comes out, the clutch goes in, the shift is performed and the cluthch comes back out that will enguage the engine (as it decelerates) and hit the next gear with the engine at the proper revs. This induces absolutely no clutch weear, the time taken is right around 0.65 seconds.
Shifting down, you have to give the throttle a blig blip whild downshifting so that as the clutch comes back up, the engine is at the proper revs. A nice 0.15 second stab at the throttle works for me.
