Talk to me about rebuilding small electric motors

When I pulled my fan apart, several of the washers also came apart.  They're fiber, they're probably old.  Its ok.

Do I need to measure any spacing here?  This thing was made in the 1920s, so it doesn't have a lot of precision in it.  

The remaining washers:

Armature:

It will help if you can center the armature in the magnets.  You'll also want to limit the back and forth play without binding up the armature as well.

That was what we did for the 1/24th scale motors.  You won't need the rpm capability that we did, but it's also important to make sure the bearings the armature shaft sits in is aligned.  You could shim the magnets to close the air gap, but certainly not necessary fir this application.

When you reassemble it, if the rotor is shifted with respect to the stator, you will notice it in the amps. Do you have a nameplate with a max amp rating?

Slippery said:

Do you have a nameplate with a max amp rating?

I honestly wouldn't be surprised if they made these before amp ratings were commonly put on plates.

Here's the main thread, only thing on the plate is 110V and 60 cycles.

This eBay link has a better pic than I took, but still doesn't show any amperage.

racerfink said:

It will help if you can center the armature in the magnets.  You'll also want to limit the back and forth play without binding up the armature as well.

That was what we did for the 1/24th scale motors.  You won't need the rpm capability that we did, but it's also important to make sure the bearings the armature shaft sits in is aligned.  You could shim the magnets to close the air gap, but certainly not necessary fir this application.

Centering is not at all an issue, ir at least not one I can deal with.  The windings are almost a press fit into the housing and the armature is centered in the housing. 

In reply to Mr_Asa :

I say centered in relation to the amount of shims on each side of the armature.

Those look like bronze or oilite bushings. This is a total spitball, but those fiber washers may have been there as oil reservoirs of sorts, to wick up any excess oil and then let that oil wick back to the bushings as required. So replacing fiber with solid material may not be ideal. 

I was working on this tonight.  The red ones dont fit over anything.  Im honestly not sure where I pulled them from in the assembly.  The fiber ones only fit on one side. 

I am irritated with myself as it is evident I took far fewer pictures than I should have.