Don't know what happen to yesterdays post, so trying again.
Anyway. Made some small motors from scratch in 2012/2013 with some inspiration from reprinted books for projects for boys years ago. These presented some insanity
on getting them to work. Used what wire I had on hand for the coils since this was all a guessing game. All hand wound . All motors run with the one in picture 3 & 7 going over a thousand RPM. Rewound the armature 4 times before I got it right.
None have any real power and I run them on a 18V drill motor battery. Quite a learning experience !