Whats clutch chatter?
This phenomenon results from a clutch that repeatedly grabs hold of the flywheel and then loses it’s grip. You will notice clutch chatter the most in 1st gear accelerating from a complete stop. The whole car will shudder as the clutch slips and then grabs… then repeats. Eventually the clutch should catch, and off you go. Typically performance/racing clutches have some to severe clutch chatter. To some extent you can avoid the chatter by riding on (aka slipping) the clutch.