Motor of the Week - Week 11 - Bonus Round!

There is some tricky ones there.

Chuck Sartor posted:

There is some tricky ones there.

I sure hope so!

Aside from the obvious 100-25s, what do you see?

I only see 1 100-25.

This thread drifted off in the abyss, so I guess I will answer. E unit A is indeed a postwar 100-25. used in many die cast steam locos of that period, 50's and 60's. The Lionel stamping on the frame is the clue along with the copper/red magnet wire. E units B, C, and what is left of D are prewar by the paper covered coil. The number is 616E-10. What is the give away is the lower screw mounting hole below the 2 normal screw holes. That hole is specific to the 616 and 636 streamliner diesels. Those engines had a lower mounting hole in the motor frame. It will substitute for a postwar 100-25 just fine, but we are talking specifics. The plunger pawl also has one less bend in it. E unit E is from a prewar 027 streamliner diesel 1700. The 1700 had a reverse unit, but it was always active, no way to turn it off, as evident by the factory chopped reverse handle, not meant to be moved. That number is 1700E-10.

First, I have enjoyed this series and have learned a lot.  Second I respect Chuck Sartor's knowledge.

I do not believe B, C and D are 616E-10s and I have no idea what they are.  The 616 Flying Yankee we have at the Carquinez Toy Train Operating Museum does not have a lever slot in the top of the power unit.  The on off lever extends down behind/under the e-unit.  Ed

Well, you are correct, not 616 reverse unit.....more research in order!

OK, revised, B, C, and D are 1668-36.

Well, Chuck, your command of train lore is astonishing! And what you don't know from memory, you are able to research in a flash. What do you consult to get such detailed answers to such arcane matters?

This is your fifth award, and we have run out of Oak Leaf Clusters. So it is only just that we  award your Certificate of Awesomeness with highest praise, "Summa cum Laude." Here it is:

Ed, we cannot pass mentioning that you too were instrumental in coming up with the right answers. If we gave certificates for what things ain't you would have three. Unfortunately we give certificates for what things am.

I have a lot of junk now  to turn into working locomotives. When I get caught up fixing the inventory on hand I will buy a bunch of other junk and resume the Motor of the Week Forum, probably around Christmas.

Many thanks to all who participated in this Forum and who taught me so much!

Sincerely,

Pete

I don't follow the comment about paper covered coils indicating prewar. I thought that postwar nickle rimmed locos have paper covered e-unit coils, but I am not positive. I found an e-unit from a 1946 turbine (no lever, spring on plunger) in my parts drawer. It has a paper wrapped coil.

I suppose there are exceptions to every rule, as they say. The paper wound coil could have been from left over prewar parts.