The '6-amp' thing is a myth at best, and misleading at worst. It tells you nothing except that the motor is drawing 6 amps in a no-load condition.
Motors have to be set up to the clock - how fast the car goes round the track - and not to a no-load setting that has no relation to real world conditions or a temperature setting that has no relation to the performance on the track.
If you want to know if a motor is on the BRCA list approved for use at Nationals use these lists:
https://www.brca.org/documents/208-e...c-2016-v3.html
Most motors don't have 1S versions, but where they do they are on the list separately. HTH
