Motor break in updates! Just thought I'd share a few things with you guys.
Motor 1, Mabuchi. Broke this one in with a quick water dip, and then ran the hell out of it. Great torque, good top end, a bit noisy. Weak-ish magnets.
Motor 2, Johnson. This one was water dipped, briefly and the bushings were broken in with Brasso. I then ran it for 6 hours at 1.5v. 3 hours forward, 3 hours reverse. VERY quiet motor, a bit pokey at low voltage, but spins up very well at full voltage. Strong magnets.
Motor 3, Johnson. Water dipped, and run. It's a dog. Enough said.
So, based on motors 1 and 3, it does seem there's a bit of hit or miss involved. Yes, it's a small sample for reference purposes, but it does show the range of results one could expect.
Jim