Ahhhh.. I see..
okay so you just added another clutch not knowing it'd render the kart an immovable object
Great..
if you put the silver one on the other end, it'd still not work (well)
here's why:
clutches have a somewhat fixed engagement speed (setable on some, but fixed either way)
means the clutch will start to engage (start moving the shoes towards the bell)
at around 1800 if not stated otherwise,
and usually full lock at around 2200rpm to 2500 rpm
(depending on make and model sometimes age .. let's stick with 2200 for sake of simplicity)
you rev up to 1800 and the black clutch starts to engage
If you add a gear reducing sprocket to the shaft the black clutch connects to (say at least 2:1 as that's recommended since you removed a TC)
the shaft now spins at 900rpm and the silver clutch on the other end won't engage at all
You now waste precious rpm to a non engaging clutch until you reach the max governed speed of the engine (3600 rpm)
at which point the silver clutch just barely starts to engage (1800 rpm spinning jackshaft)
since you have no rpm left in the engine, the silver clutch now burns out since it can never reach full locking speed
just get rid of the silver one and install a sprocket with twice as many teeth as the black clutch has.
dual clutches only work for two speed setups..
and one clutch must either be specifically made for such two speed setup,
OR use a sprag clutch bearing so the other one can "overrun" ..
such setup cannot be winged I'm afraid it's rather finicky in fact to get the gear ratios right,
otherwise the the kart will have a power drop as soon as the 'highspeed' clutch engages, drops speed because of it and the 'slowspeed' clutch has to take over again..
that goes back and forth until you either burned the lining off the 'high speed' clutch or you find a hill to drive down
'sid