Torque converter belt slippage..need some advice

[bnt5]

Like the title says I have a comet series 40 torque converter that is slipping badly when under any sort of load, by load I mean trying to go up a little hill or incline of any sort. The clutch sits on a manco carbide 7010 with a robin subaru 9 hp and because of the slippage the kart is useless on any terrain other than a street. I have cleaned and lubed the TC according to the specs and it changed nothing, I verified the belt size and I think I am ok there, can anyone suggest what I should look for next? I dont want to destroy my belt casue it burns when she slips. I will post up some pics to help with diagnosis. Thanks Bill

 

[Doc Sprocket]

Check the following: 1) That the alignment of the pulleys is correct, and 2) That the center distance between the pulleys is correct for the particular belt that you're using. This is assuming that the belt is the correct type to begin with, and isn't worn put completely. Since we're here, what is your rear tire size, and final drive ratio?

 

[bnt5]

everything on the kart is stock, that being said the rear tires are 20x11-8. I am not sure how to compute the final drive ratio I am guessing it is based on the number of teeth in the various sprockets. If you would let me know what to look for I will do the math, also I will pull a measurement from center of pulleys to varify the belt distance. As far as pulley alignment, there is a spacer against the engine side of the driver clutch that pushes it out about 3/8" compared to the driven clutch, I think the spacer is there to keep the driver clutch away from the chain just below it, it has been this way since I got it and the manual shows this spacer as well...not sure if that would cause a slipping issue?

Thanks
Bill

 

[bnt5]

I counted my clutch sprocket and it has 12 teeth, the main drive sprocket has 60 teeth. I am going for torque, right now it wont climb a little hill without a big run and go, no chance of ever spinning a tire either at this point. I tried to go up a hill on my front yard and it would bog down, forward motion stops and the belt spins on the comet 40 driver clutch and I get a nice burning rubber smell. What should I do to take care of this issue?

I posted a picture of the torque converter apart (see above post)

 

[bnt5]

I beleive I may have found the culprit...not sure but maybe. I originally took the numbers off the old belt that was on the buggy and matched them to what is supposed to be on a comet 40 TC and they matched, well after doing some measuring and research it turns out the belt is 3/4" wide instead of the correct 7/8" wide needed for this clutch, and it also turns out to be 1 size too small based on the measurement between shafts. Could these 2 issues cause a TC to spin and not produce the optimum torque? I think the old belt has been worn down by an 1/8" and now needs to be replaced. I am crossing my fingers that this is the culprit.

 

[wall gator]

I think you've figured it out......keep us posted.