Splitting commutater from armature

[Blueandwhiteton]

Advice needed, how do you split these two, do I need a press I don't have a vice only a joiners portable workbench, I would like to try and solder the coils to make a connection again, failing this a new assembly will be purchased, thanks once again for any info.

[atom3624]

I would have said they are already joined, the windings of the armature soldered to segments on the commutator, but it appears yours is already separated?

 

A bit more information of where you are at, and what you plan to achieve may help - plus which type of motor.

 

Al.

[96RAF]

Usually the armature is an interference fit on the motor shaft but the commutator is a push fit on an insulated sleeve. This allows one to fairly easily move the commutator angularly relative to the armature for timing purposes. Getting this angle correct is important and varies motor to motor according the motor type and use. You should be able to solder any broken winding connections back onto the commutator with both parts in-situ.

[Blueandwhiteton]

I have unsoldered very thin wires from copper plates there is a brass bush which the comm appears to be attached to and the armature has some green insulating covering but I can only see one broken wire, I do not know motor number but it is a class 43 Hornby hst intercity late seventies I think, I have seen a picture on an auction where they were separated I thought it would split easily ???, once again thanks for replies.

[96RAF]

Is it this type 

https://images.app.goo.gl/NrSjys8eUrwRuxYd8

 

Or this type

https://www.newmodellersshop.co.uk/images/hornby_spares/x8089.jpg

(3 pole shown but 5 pole similar).

[Blueandwhiteton]

RAF96 it is the second image three pole ringfield motor.

[96RAF]

RAF96 it is the second image three pole ringfield motor.

 

 

Easily repairable as is or if outwith the time and effort then easily and readily replaceable at minimal cost. If you are short on wire then it is OK to take off a turn to gain length to trim for soldering.

 

If you have the correct gauge enamelled wire you can fully rewind them yourself. Wire goes from com tag 1 round armature pole 1 to com tag 2, then round pole 2 to com tag 3, then round pole 3 and back to com tag 1. All winds are in the same direction and the same number of turns to fill the pole piece similar to the original. Scrape off the enamel to solder to the com tags.

 

As stated keep the com to armature alignment the same.