i have a racing clutch with no springs...... but i dont understand what the chatter is

when i shift at a high rpm i hear a motorcycle type clicking sound
like vrommmmmmmmmmm(click) vrrrrroooommmmmmmm(click)

is that what it is?

No, thats not it.

Clutch chatter is when the clutch grabs hard, releases, then grabs hard again and repeats over and over (happens really quickly like a machine gun) (gives a jerking motion on hard launches). Springs are used to dampen this effect by absorbing this effect. By having no springs, theres nothing to absorb this effect making chatter almost inevitable. However, if you don't have an aggressive enough clutch (such as an organic/organic) the clutch will slip and not produce enough initial 'bite' and no chatter. What clutch are you running? Most non-spring clutches are usually really aggressive ie: cindered disc.

[This message has been edited by RandomTask (edited 06-14-2005).]

youll know what clutch chatter is..... if you have it

chatter?

[This message has been edited by 4.9 PFI FIERO (edited 06-14-2005).]

its a RAM racing clutch from the fierostore

kevlar

quote Originally posted by Exotic Rida: i have a racing clutch with no springs...... but i dont understand what the chatter is when i shift at a high rpm i hear a motorcycle type clicking sound like vrommmmmmmmmmm(click) vrrrrroooommmmmmmm(click) is that what it is?

Chatter you would feel as you are taking off from a dead stop. Usually you don't feel it at higher speeds because you spend less time engaging the clutch and the difference in rpm is not as large. If it chatters the normal reaction is to rev it up higher when taking off and slip the clutch a little more aggressively.You don't mention if you are running the stock pressure plate or a high performance one.

its hi-po the whole set

ive been told it's due to a flywheel in need of dressing/turning, or oil or grease on the disk.

with a kevlar clutch, chatter will happen if you ride the clutch (slow starts) and it gets really hot. It feels like the clutch is suddenly grabbling and releasing about 20 times a second. Typical fix for me; drop the clutch and put my right foot into it. As long as someone ain't in front of me, anyway.

If you haven't felt it, then you're doing something right with your starts.