OP
So I got everything back together and there was a slight but noticeable improvement in performance. Although I hoped for more it was definitely within my range of expectation. I have much more planned. I may see what I can get out of exhaust and intake mods, and/or just go straight to hacking the frame and dropping in a more powerful engine like a Predator 670 twin.
Since this is the garage if anyone is interested I will describe what the mod did. I bought this thing not only to ride but to work on, get my fingers dirty, start improving my mechanic's skills and learn about small engines.
I put in lighter roller weights in the variator pully which work to push two cones together with increasing engine RPM, increasing the effective diameter of the "gear" the belt is riding on. The driven pully also has cones held together with springs to take up or let out slack to accommodate what the CVT pully is doing. So the lighter weights require higher RPM for a given gear ratio as compared to the stock heavier weights, allowing the engine to run at a higher rpm across the CVT's range.
There is a good demo of it in the below video. That is not me or my kart. Drive pully (far) is variator/cvt , driven pully (near) also contains centrifugal clutch. CVT demo at 7:34 - 7:54.
In that video there is no load, so the CVT maxes out (goes to highest gear) quickly. That's not really what it would look like while operating on the ground.
Since this is the garage if anyone is interested I will describe what the mod did. I bought this thing not only to ride but to work on, get my fingers dirty, start improving my mechanic's skills and learn about small engines.
I put in lighter roller weights in the variator pully which work to push two cones together with increasing engine RPM, increasing the effective diameter of the "gear" the belt is riding on. The driven pully also has cones held together with springs to take up or let out slack to accommodate what the CVT pully is doing. So the lighter weights require higher RPM for a given gear ratio as compared to the stock heavier weights, allowing the engine to run at a higher rpm across the CVT's range.
There is a good demo of it in the below video. That is not me or my kart. Drive pully (far) is variator/cvt , driven pully (near) also contains centrifugal clutch. CVT demo at 7:34 - 7:54.
In that video there is no load, so the CVT maxes out (goes to highest gear) quickly. That's not really what it would look like while operating on the ground.
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