Like Andre said, most electric karts run a differential, the new OTL models upgrade from open to limited-slip, but only the “shifter karts” get that. Also, shifter karts are total BS. It’s not a gearbox, but instead changing the gear with the paddles changes the torque curve of the electric motor. They don’t even use a faster engine; the only reason the laptimes are better is because OTL has a limited-slip differential and softer tires on it. On the steering column they have a return spring to make the steering center easier, which is heavy to turn. Tie rods are made of plastic so the alignment is crap after like a day. Still driveable and not that much of an issue, but when we have to push a kart with the toe off it can be hard.
That was my rant on OTL rental karts. I like to think OTL is a name copy of OTK but they thought “Well we can’t call ourselves exactly the same think, and L comes after K, nobody will notice a thing!” and called it a day at the legal department.
Okay, complaints aside, rental karts aren’t a bad way to keep up some racing skill. It’s a little weird sitting up in the seat and putting on seatbelts but that doesn’t matter too much. I ran a race with some coworkers yesterday, and after not driving for probably a month, my timing was a little off that race, so any driving is useful in that regard. Smoothness is something a driver can work on in rentals too. Since they go so slow, consistently being smooth is still very important to get a good lap in. I try to run at least once a month in the winters just to keep up on those two things.