I say 10-12 min.... before that RTR speedo starts smoking!!!!!!! The LRP runner is designed to run 19-36 turn motors.. (that doesn't include a 19T spec, they draw too many amps trust me!!)
UPGRADE to a RACING speedo before you even attempt to run those motors!
G's RC Raceway- Best off-road track on the east coast...period!!!
Pitman for Team Dallas Austin...