Why is twin/multiple disc clutch better?? |
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Why is twin/multiple disc clutch better?? |
Mueller |
Jun 19 2003, 05:07 PM
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#1
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
What am I missing here?
The friction material and contact surface area of the 1st disc and the flywheel remain the same (or are made smaller) when going to a twin or mutiple disc setup Is the gain from a smaller diameter clutch/pressure plate and more clamping force?? I thought I had read that Porsche is considering twin disc clutches in some of the newer cars, something about being able to upshift while under power?? (IMG:style_emoticons/default/wacko.gif) Hayden or anyone else, care to enlighten us?? (or maybe just me since everyone else might "get-it" (IMG:style_emoticons/default/smile.gif) ) |
TimT |
Jun 19 2003, 05:24 PM
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#2
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
With twin discs you get double the contact area.
You can reduce the diameter of the rotating mass (clutch/pp/flywheel) and reduce the MOI (moment of inertia) and your engine with rev more freely, and some of the hp stored in the flywheel may be available to accelerate the car more quickly. You dont gain hp, but hp is free to accelerate the car instead of the rotating mass ( flywheel) Some manufacturers (tilton, quartermaster,coleman) make up for the area lost by reducing the diameter of the rotating mass by doubling,or even quadrupling the number of driven discs. Rev a car with a dual mass flywheel someday, takes forever to settle back to idle, then rev a car with a light flywheel/clutch package returns to idle quickly. The car is more responsive with a light flywheel and clutch. I think Tilton songle plate clutches are good to almost 500 ft/lbs, but you cannot slip them at all.. Lighter is Faster |
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