e vs i clutch

[CorvallisBMW]

Are the e and i clutch interchangeable? I know the i clutch has springs in it but the e doesn't. Can an e clutch be used on an i motor with a single-mass flywheel?

[Wh33lhop]

You generally sacrifice streetability (smooth engagement) using an unsprung-hub clutch on a single mass flywheel. There's gotta be a little give somewhere.

[CorvallisBMW]

It's going on our LeMons racecar so our only concern is really rev-matching on downshifts and the like. If it's too rough on engagement we could end up upsetting the car, which would suck going in to a corner.

[jlevie]

I don't think the lack of springs is going to be a problem on up/down shifts. Though moving the car in 1st & reverse might be a bit rough.

[KenC]

I don't think the lack of springs is going to be a problem on up/down shifts. Though moving the car in 1st & reverse might be a bit rough.

Aside from coming on and off the track, we're never in first. We're hoping to just bring the eta clutch disc for a spare.

[jlevie]

Aside from coming on and off the track, we're never in first.

Though not explictly stated, that was my point.

[lateracer]

I ran my single mass with an unsprung e clutch disc. As was already stated, first and reverse are less forgiving, but it grips just fine.