Unsprung vs. sprung clutch for road?
02-05-13, 12:03 PM
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i like sprung, there is less shock on the transmission.
02-05-13, 09:16 PM
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Unsprung metal puck equals a on off switch that engages quite harshly.
The center sprung ones (radially sprung VS spring between the friction surfaces) decrease the shock to the gears, and joints in the driveshaft.
What do you gain having unsprung? Long road... parts that wont wear out. But then again you will increase wear in others.. like u-joints.
Personally I only run the unsprung ones.. copper puck only. I got tired of the street cars having a clutch disintegrate on a rare track day/autocross on downshifts.
And yes.. you will need flywheels surfaced, or replaced after a clutch disk or two wear down.
The center sprung ones (radially sprung VS spring between the friction surfaces) decrease the shock to the gears, and joints in the driveshaft.
What do you gain having unsprung? Long road... parts that wont wear out. But then again you will increase wear in others.. like u-joints.
Personally I only run the unsprung ones.. copper puck only. I got tired of the street cars having a clutch disintegrate on a rare track day/autocross on downshifts.
And yes.. you will need flywheels surfaced, or replaced after a clutch disk or two wear down.
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02-06-13, 12:07 PM
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you also should have an honest look at the combo you're running. if you have a big engine with a "weak" trans like a PP/NA trans combo, you probably want the extra cushion of the sprung clutch.
if you've got something like a turbo trans and stock 6 port, then you could go unsprung without problems.
and then you need to look at the driver. it took our drivers years to learn how to not destroy transmissions, with the Rx7 the 3rd gear synchro works hard. a good driver can get it to last a season or two, a bad driver will kill it in a couple of races.
so with the Rx7's our drivers got a stock clutch, and i was looking at a longer shifter, they were really hard on transmissions.
if you've got something like a turbo trans and stock 6 port, then you could go unsprung without problems.
and then you need to look at the driver. it took our drivers years to learn how to not destroy transmissions, with the Rx7 the 3rd gear synchro works hard. a good driver can get it to last a season or two, a bad driver will kill it in a couple of races.
so with the Rx7's our drivers got a stock clutch, and i was looking at a longer shifter, they were really hard on transmissions.
02-06-13, 12:19 PM
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you also should have an honest look at the combo you're running. if you have a big engine with a "weak" trans like a PP/NA trans combo, you probably want the extra cushion of the sprung clutch.
if you've got something like a turbo trans and stock 6 port, then you could go unsprung without problems.
and then you need to look at the driver. it took our drivers years to learn how to not destroy transmissions, with the Rx7 the 3rd gear synchro works hard. a good driver can get it to last a season or two, a bad driver will kill it in a couple of races.
so with the Rx7's our drivers got a stock clutch, and i was looking at a longer shifter, they were really hard on transmissions.
if you've got something like a turbo trans and stock 6 port, then you could go unsprung without problems.
and then you need to look at the driver. it took our drivers years to learn how to not destroy transmissions, with the Rx7 the 3rd gear synchro works hard. a good driver can get it to last a season or two, a bad driver will kill it in a couple of races.
so with the Rx7's our drivers got a stock clutch, and i was looking at a longer shifter, they were really hard on transmissions.
02-06-13, 01:50 PM
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we joke that putting on the drivers helmet takes off 50 IQ points, and this does put some people negative.....
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