I honestly can't believe what a HUGE difference it makes to lighten your clutch, previous set up..
TCCD 70cc kit
K-star high comp head
exhaust port opened and raised 1mm
case matched pretty deep and polished
Proma GP pipe derestricted (loud as fuck)
Dellorto SHA 16
15mm side shooter intake opened to 16mm
intake port ramped and matched to intake
Hi flow filter
stock two shoe clutch
i have decent top speed but needed some get up, so I tried my hand at clutch tuning...
Each shoe was 96 grams, I lightened them each to 70grams, filed the cuts smooth, and reinstalled, I'm using stock two shoe springs 2 full turns in from flush. Before, getting off the line was so slow I didn't even enjoy riding, after the mods I took it for a quick spin, the second I touched the throttle, it revved up higher than heaven, no tach so if I HAD to guess, probably 5500+ rpm before it engages. Though that is insanely beautiful, It revs up to high cause I hit a corner that goes to a steep incline, after slowing down then hitting the hill it slipped the whole way up, and there is NO WAY I could ride it in stop and go city riding, so I backed the screws off half a turn but didn't get a chance to test it out again. Anyway, I didn't believe all the hype about how much bottom end you could gain by lightening, but i believe now, and I'm sticking to it. Here are some pics, I guess you could think of this as kind of a tutorial.