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Dont quote me on this. But i dont think the gy6 150 has a rear disk brake. Ive looked at a bunch of resellers for this engine and none of them come with a disk brake set up.

But im thinking the gy6 50 10inch rim would fit on a gy6 150 that has a 10 inch rim right? Same engine model, same rim, both drum brakes

my belt keeps breaking about 2-3 weeks. well i had the kicker case off the other day and i noticed the belt is wearing down fast, as if its being gouged (on the outer side of the belt towards the engine, not the bumpy side of the belt)

so i looked all around the engine seeing where is it hitting, and because its all black power in there, i could see easily that its hitting the started gear because the belt is so loose. the belt can be squeezed but i know it shouldnt

the belt is the same size as before because i only made my purchase from matching the numbers, i dont use cheap brand, people suggested using powerlink. the only thing i changed in that area is the variator which is now a ncy brand. but i never changed anything in the clutch or transmission area. i doubt its because the variator because it was made for the qmb139. can anyone help? do i need a slightly shorter belt?

so, im planning on doing the 150cc swap, i have a qmb139 right now. i seen pics of the swap, i have a welder etc. so im ready. my question is whats the motor i need to go with? i have a chinese scooter, but theres so many types of engines, i dont know where to begin. im not looking to race, just want a moped that can keep up with traffic and a little more, but also reliable. i doubt ill put any mods if its good enough for that. i do most my shopping on ebay or amazon, and a budget of about 450. thanks

sorry for another topic. but today i noticed my muffler barely hanging on the exhaust. its cracked all the way around, but luckily the line doesnt connect. i swear 5 minutes down the road itll break off and maybe hurt someone.

do you have any advice on how to fix this? dont really wanna buy another one. thought about taking it to a weld shop, or maybe using jb weld, you think jb weld will hold it and with stand the heat?

i appreciate the advice of the car having too much power. i did it for about 1 minute. you think i caused damage? because after i stopped it still had the same affect so maybe i didnt do damage?

moped was running fine, then i got home and parked, and wouldnt start in the morning like a dead battery.

it would crank once... then twice... and stop. my first thought was a dead batt. so i took my fully charged car batt and did a jump, absolutely same reaction. so i thought, maybe the car batt is dead. i did a jump directly to the moped from a running car (no other batts) and still same thing (also i can hear the car idle drop when i hit the starter button so i know juice is going in)

my second thought, bad relay. i put in a brand new relay. same thing.

what else can cause this?

I have a qmb139, the nut came off of the crank and the variator came off and ruined the threads on the crank. I tried to use an impact gun to make it go on and off to rethread it, but its beyond repairable.

Im going to replace it with the hoca stroker crank. Ive seen a few vids, but none say a list of things i need.

-Anyone know what parts i need for the repair? And
-and while im there, what should i replace?

It has about 4000 and i think itll need seals and bearings. But not sure. Thanks