XRAY - Model racing cars

Actually, we still have runtime issues :)

Reason is that whatever they give us we will try and make the best of it hence issues on duration.

Driving style is of course important.

Yes, you can charge batteries again BUT you have to wait for them to cool down (it ussually takes around 2 hours).

It is advisable to wait for the motor to cool down too beween races

Depends on track, motor, grip, and batteries. On asphalt racing, medium size track i get up to 9 minutes. On large 1/8 track (average speed around 60km/h) i will do around 6m with 6 cell, and around 5m with 5 cell.

Thats with IB4200 and 4.5 Lrp brushless.

With lipo you can get a lot more runtime, but they may not be legal were you race.

In any case, with 2 chargers and 4-5 batteries you can be ready to race every 15 minutes or so.