no way is a crank swap 'easier' or less time consuming. whole motor swap? sure. easier by far, but also vastly more expensive. i have 80 bucks in the adapter part, maybe 60 bucks with the new cable, clutch perch, lever, etc. (all oem grom stuff) , 1 qt of oil and 29 bucks for the aftermarket clutch parts setup. so, just under 200 total. you cant find a
good grom motor that cheap anywhere.
its ok, i like challenging mechanical issues and actually doing it 'this way or that' 1st hand, instead of watching it on youtube and assuming somebody is doing it right and didn't leave a step out.
And now everyone knows what to expect if they attempt this with a stock motor. as said, i would suggest a motor swap if looking for a clutch swap, OR, if you're feeling really ghetto, just mig weld the auto-clutch to the bell on the crank end. saw lots of overseas pics of that.
and yes, you could def swap as he said in the video, the stuff all the way over from the cub and trail to the grom, but not the other way. and there's the rub...
Here's why, there's no large keyway to drive the clutch (output or primary) gear on the trail crank, but there is on the grom one. on the grom crank, you just remove it. On the trail and cub, and wave 125,. that keyways isn't there so its driven off the shaft end w the splines on one paice which is part of the spinner, whereas its 2 pcs on the grom etc.. see, that wasn't mentioned. so, you would have to swap the whole crank over to go manual in a trail or cub.
grom crank. note the larger keyway (and slot, since its NOT on the trail crank) for the output gear that's missing w the trail crank. (part 7 & 10)
trail crank. little gear is for the oil pump. no large driven gear.
now you can see why i did what i did.
as a side note, this is all
completely reversible, I can swap the drilled oil insert out with a solid short plug and put it all back dead stock if i want to. that, IMHO, is the right way to do a mod. the only destructive mod ive done on my bike is the airbox runner mod, and thats easily rectified w a patch plate i made at the time to allow it to be reversed. heck, i even saved the stock catalytic converter mess w the stock exhaust which will NEVER be welded back in, but, it could.