The NTM42's do the job nicely tough after the change over, even on a 6-1 gearratio. The slower running, but way bigger 50mm versions should laugh at the strain. if I see how Caliopes and Valkiri2's 4 kg bearingless disks spin up with only a 1.5-1 gearratio I don't have any doubt these motors will make any featherweight in a unguided rocket.

But yes, Sensored seems a better bet for such low gearratio's.