To be clear, the $2000 was spent on clutches for two different karts, not that that makes it much better. There were two issues going on:
1) The engine builder was supplying inaccurate dyno curves causing us to set the stall speeds way too high, and
2) Our home track is short (4/10ths) and very technical, so you are constantly in and out of the clutch, resulting in abnormally fast wear. There was no viable solution to this other than the 3-disc, which has been bullet-proof comparitively.
Thinking logically, I’m sure if the track was a bit more wide open with fewer drastic rpm changes that the two disc would be fine. Still wouldn’t run the wet clutches in sprint racing. They do have a lot more parasitic drag.