Unsprung VS sprung clutch

[BavarianAddict06]

hey guys i recently ordered an aftermarket clutch and when i opened it i realized that the clutch disc is unsprung. i heard some negative feedbacks about unsprung discs but i never drove a car with one . so i dont know what to do. shud i jst change it and get a different disc? or ?.... if any of you have an unsprung clutch disc plz let me know how u like it.

[jlevie]

I have used unsprung clutch discs on race cars and they are okay there. The lack of springs make the clutch rather grabby. That is rather a nuisance on the street where you frequently want to feather the clutch.

[TobyB]

Yeah, hard to say since the nonsprung hubs I've used also had a more aggressive compound,
but my experience matches Jim's- it's more of a switch, less of a dimmer.

t

[BavarianAddict06]

I have used unsprung clutch discs on race cars and they are okay there. The lack of springs make the clutch rather grabby. That is rather a nuisance on the street where you frequently want to feather the clutch.

Yeah, hard to say since the nonsprung hubs I've used also had a more aggressive compound,
but my experience matches Jim's- it's more of a switch, less of a dimmer.

t

hmm.. thanks guys. What do u guys suggest me doing? i have them next to me. and im tryna figure out to see if i shud just put them on or get a sprung disc?.. thanks alot guys

[unevolved]

How much of your time is spent on the street vs. on the track?

[evandael]

typically sprung hubs are used with single mass flywheels to dampen shock through the drivetrain upon gear changes. you'll find that cars with dual mass flywheels have solid hub clutches, as the dual mass itself provides dampening.


I feel that the really deciding factor in clutch feel is puck vs solid, then material, then pressure plate, then sprung vs unsprung.

[e30leigh]

if you spend most of your time on the street and in traffic id get a sprung disc. if your using it as an odd street weapon come track hack then id run with the soild disc.

soild is less .... traffic friendly. the car will tend to lerch forward on engagement more. and more prone to stall with low revs. and it wont like to slip. it could burn/ glaze/ over heat depending on material.

if that sounds like its not for you change for a sprung item.

[Jaxx_]

I wouldn't do an unsprung clutch if it is a daily, or you drive it only on the street. I have a sprung 6 puck, a spec stage 3, and that's as aggressive as I would want to go on the street. It takes time to get used to, but even still it can catch you out. I probably stall it at 1-2% of traffic lights.

[Dominic49]

what material is the un-sprung disc made out of? Contrary to popular belief, the springs in the hub have no real effect on how the clutch engages. The part that does matter is if the disc has marcel springs as they will widen the window of engagement providing a cushier engagement.

[matthugie]

I have an unsprung clutch and don't mind it for street driving. It does take some getting used to though, and most other people who have driven the car have had some difficulty at first.

[TobyB]

The part that does matter is if the disc has marcel springs

Oh. Heed Dominic.

Yes, this- if there's a wavy spring between the 2 friction surfaces (somewhere) then
it's going to engage a lot more progressively.

The unsprung hubs I've used have NOT had this layer. Thus, switch.

t