My 2 karts are TAG’s – Zanardi KZ2 with Rotax Evo and CRG KT2 with VLR 100. There are numerous references to “binding” online but I can find no clear definition or, better yet, description of what actually happens.
What I have experienced when I turn in too tightly is a quick BUT slight mid-corner oversteer shift (sometimes with a tire chirp) with a quick decrease in RPM’s. No hopping, just slow out of the hole. I’m looking for feed-back or push-back on what I think is happening (besides driver error – see “turn in too tightly” above) .
The fronts are turned in and have come up to maximum grip with a defined turning radius. The rear is over taxed and breaks loose, dropping the inside rear tire on the track.
This does 2 things: (1) It creates a sudden push effect without actually pushing the front tires which are already gripped-up; (2) It puts the inside rear tire on a smaller, slower radius arc than the outside rear tire which slows down the entire axle/sprocket/chain/engine assembly all at once. The kart is “bound-up” and the RPM’s have suddenly dropped.
I find if I hit the sweet spot in a turn, not too slow not too fast, then my turn is smooth ,and I start gathering speed as I squeeze the throttle at or before the apex. By the way, these are 35 to 40 minimum speed turns, if that adds anything to the discussion.
What say you?