I would prefer karts never have them. As soon as one fails on track you have a guy driving around oiling down the racing line not even realizing he’s doing it.
Spray the chain after every time you pull off track and you’ll never have a problem. If you’re doing robo-pong 200 then maybe consider an oiler, other then that, it runs ~10minutes at a time. Its really not worth it.
We used to use them at Purdue Grand Prix. Just a drip bottle mounted above the chain. Turn it on when you fire it up and turn it off when yo ucome off (or it makes a heck of a mess all over the stand and floor).
I think Dan is right, most series/organizations/tracks dont allow it. Check your local listings.
belt drive is the cure for that.. has anyone ever built a belt drive?
It’s common in road racing, not in sprints though. Sprint kart tracks are kind of tough on a tooth belt drive. I tried it years ago, but it kept getting tire rubber stuck in the pulley teeth, then it rips the teeth off the belt…shame it didn’t work better, kart was always clean, no chain lube mess.