Lockup Clutches...

[Maj]

There are 3 standards for springs
Oem & slightly heavier oem replacement
hd (std gs550) or schnitz
HD turbo (APE springs)

[BUSGO]

I have never had an issue with the clutch on my bike. It seems perfect and light. The slipper clutch is a dream and I would never consider changing it.
The only time I ever had a problem was when I changed from mineral oil to full synthetic.
It slipped a couple of times when taking off cold but after a couple of days the plates seemed to have adjusted to the friction level.
I know that this thread mainly concerns the dragging fraternity, but for general road use the standard clutch is ideal for me.

[BLACKZOOK]

I never had a problem with the stock (04) clutch until I started the drags, even then I only welded her up cause it seemed the thing to do.

[Gnarbunkle99]

I agree, stock for the road and limp wristed! My clutch bit like fiscal policy on a drag launch until I had it welded. Apparently, an early model stockie may also develop a judder, hence the anti judder spring and seat in later models. I also like the fact that a welded unit does not allow the plates to slip and wear/heatup on deceleration.

[spamanglenn]

What i found was with the stock clutch you couldn,t practice start on the street.It would get hot just riding around so any launch would be a lottery from good to lethal.At the drags with no burnout it was okay,except the first stage was too long and the second stage was too short.So the only practice i get was on a wed night with an audience.Now i can practice my starts so hopefully will be able to refine my motor skills for when it counts.It does judder alittle when cold though.So for me it was a big step forward and i haven,t been able to back it into corners yet without the slipper,although it does feel like it has more engine braking effect on the back tyre.

[Geri]

Hey fellas. This is my first post on the new board on the old board I went by the name Geribusa. Some of the members know me from SH.ORG and 200mph.org

I've just fitted a MTC 2-stage lockup to my stock clutch setup. They aren't supposed to be fittable but I did some small mods to mine and it works just great. I used 6 stock 'busa small valve springs for base pressure and the lever action is very light. By increasing wieght on the lockup arms it now holds 400hp comfortably.

All I did to mod the clutch is drill the bolt-holes out 1mm each and machine the posts shorter, and it fits like a charm.