Driven pulley keeps pinching belt…

[710E]

I’m very new to the go kart world but quickly learning more than I thought that I ever would. With that said Im having a real struggle with what appears to be a comet 40 series torque converter in a Manco 710. I had the go kart lifted off of the ground and the torque converter seemed to work nicely. However when I sat down to ride it would only go 2 feet before the belt jammed in the driven pulley. Both pulleys have been taken apart and cleaned. The driver looked almost brand new so it was lubed with dry lube and reassembled. The driven pulley seems to look ok all be it I’m not entirely sure what Im looking for. The base of the pulleys were lined up perfectly which caused the alignment of the belt to be off so I opted to keep the belt centered in the pulleys as opposed to the base of the pulleys being perfectly in line with each other. My questions are…. Do I have the driven pulley on backwards because Ive head some yes and no’s on how its installed. Second is the drive belt on the 40 series tapered on both sides? Any help would be appreciated because there is a wealth of knowledge on here. The pictures are from the rear and top looking down respectively.

 

[Sparkwizard]

Since neither your driver or driven has a "flat" side, they are both angled, so it should have a belt tapered on both sides.
Can you get a good picture of the driven assembly? I'll make a guess, but the real experts will need a semi close-up to help you figure it out.

 

[710E]

Absolutely! I included a couple of pictures to show what the pulleys would look like aligned with the backing plate vs what they would look like aligned with the grooves.

 

[JimD]

Ramp is on the wrong side for an outboard mount. Wrong spring or flip it around 180 degrees so the ramps are next to the engine. In your picture I consider that an outboard mount but based on the way the ramps move you would have to reverse that unit to have it work correctly.

 

[710E]

Thank you Jim. Excuse my ignorance but Im a little confused on what the ramp is? If its referring to the tapered part of the pulleys they are both tapered so I might need a more elementary explanation of what you meant.

 

[ezcome-ezgo]

Ramp

 

[Sparkwizard]

The three little black nylon things on the hub of your driven ride on the ramps. Belt pulling on the pulley should force the nylon bumpers against the ramps, not away from them. The way they are set up would cause the pulley to open too fast.

 

[710E]

Wonderful thank you for the picture excome and the simplified explanation spark. I had marked what side of the ramp it was before I disassembled it so maybe it was wrong from the get go! I will try switching them around and go from there. As for the alignment of the pulleys Im assuming its more critical for the belt to be in alignment than the pulleys themselves?

 

[Sparkwizard]

I would just flip it over and see how it works. Put the hub and the moving half toward the sprocket and see if the belt lines up.

 

[710E]

Ill give it a shot tomorrow and see if that is the solution! I will also try that for the alignment.