Chinese go-kart / dune buggy

[nbaffaro]

Do the rear tires spin when they are off the ground? I am very skeptical that they have the wrong sprocket on it.

I'm thinking that there might be a slipping CVT clutch belt or even stuck or locked brakes?

Does every tire spin freely?

 

[Der Hosser]

The tires will spin once they're off the ground. Brakes are free, but with any weight in the go kart it wont get out of it's own way. I agree that it seems like a clutch is slipping, but the stupid machine is brand new and has reduction gearing with jackshafts. Not sure of the internals there... I understood it to be just gears...would it be worth pulling apart to look? Im gonna have to do something!

 

[nbaffaro]

How does the engine sounds when you try to go? Does it sound like it’s working hard? Does the sound change in/out of gear? Does it change with the wheels off the ground?

 

[karte_m0lim]

and... do you have oil in reductor?

 

[Der Hosser]

The engine sounds like it is working correctly...sounds pretty much the same whether it's trying to get moving or I have the wheels off the ground and freely spinning. It definitely revs up to the limiter when the pedal is fully depressed. I've removed all the external throttle limiters; all that would be left is the actual governor inside the motor.
All oil levels are correct, too. Im really leaning toward an internal issue in the reducer, I just dont know all the internals or what it could be in there.