armatures foe pre war engines

To add to this for more info...I know your supposed to rewind the same number of turns with the same size wire.  What happens when you use smaller/larger wire gauge and more/less turns? How does that effect operation?

From what I have read different wire /number of turns will affect the torque and speed of the motor. I think there is some formular to figure it out.

I have rewound a number of Flyer S gauge diesel and steam armatures in the past. I do make sure I use the same gauge wire. In my experience you will never get the same number of turns on as they did in the factory. I usually get close to 90% of the original length back on and have not noticed any difference in performance or overheating by having less wire.

Well finished rewinding my first one. Am sure I miscounted but ran it for about an hour and it seems ok. Stayed nice and cool, It does appear that the commutator is pressed on, I did the first without taking it off and it was tough getting all the coils on. I am going to attempt to take it off for the next one(i have at least five that I have to do). Has anybody taken the commutator off. If so does anybody know how if can be expoxied back on if I can't press it on?

Thanks Jim

Maybe you should reach out to one of the guys who does this regularly (such as Bob Hanlon) and request information as to their source for new commutators and how they handle attaching the commutators. 

Otherwise, I suspect you will break a commutator in attempting to remove it. 

Thanks yea I'm going to reach out to Bob because I want him rewind one for me anyway. Because someone wants to buy the engine for it and I want it done by a pro.

Jim

Please keep us informed on what Bob Hannon has to say.  I want to rewind some of mine someday also.Thanks

Talked to him yesterday super nice guy. This man knows his armatures (in my first conversation with him he knew the number of turns in my pre war armature). He is going to rewind one for me and sell me the commutator plates that if I want to rewind some of my own. He also said he would guide me on how to press it on if I decide to go that route. So if you have questions or need some rewound call him.