I've been running time trials for about 4 dozen Trans Am slot cars, more than half of them Scalextric RTR cars with Paul Gage tires. A full run at Shelby-Hendrix Speedway is 30 laps, 5 of which are used to calculate a qualification time. The other lap times are used to create a statistical profile of the car.
I've been doing this for years and can push most cars for 30 laps without incident. But, one car, a Scalextric Mustang, consistently deslots after 11 - 14 laps into a run. Coming out of a turn it simply lifts out of the slot. This tends to happen in one of 2 turns, both right turns, but can happen anywhere on the track. It doesn't spin out or crash, it just comes out of the slot and usually ends up about an inch away. I've run other cars in between attempts with this Mustang and not had any problems, so it's not the track.
I checked and the chassis is flat and all 4 tires sit squarely on the setup block. The chassis has been sanded and body screws loosened a bit to create a little body float. The stock guide isn't loose and seems no different than any other car.
I'm thinking of adding some lead weight to the front part of the chassis but wish I knew what was going on with this car that isn't happening with similar cars. Anyone else had this sort of problem with a car and figured out the cause?