So I have been reading a lot about gearing on this forum and have come to the conclusion that people at the track we normally race may all be robbing themselves of lap times including my kids' karts. We have an unrestricted clone cage kart(320 lbs) and a red plate clone cage kart(270 lbs). We recently switched the front driver up to a 12 from an 11 and and shaved .3 off lap times (9.6 sceonds) while dropping from 6900 to 6600 rpms on the unrestricted clone. This has me thinking that there is a lot more to be had. The track is advertised as an 1/8 mile but I dont think its that long. (i could be wrong) We have been running 11 front drivers because that is what basically everyone I have asked is running. The Jr1 kart we have doesn't have a mychron so I dont know rpms yet but if the unrestricted is at 12/68 what should I shoot for as a starting point for the red plate?