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What starter is this?

red57

Jedi Warrior
Country flag
Online
Hello,

I'm hoping someone can identify this starter. It was on my 1960 BT7 when I bought it in 1887 and I've used it exclusively on every Healey motor (including race motors) I've had since then. I don't have a way of knowing for sure but I'd guess at least 150k miles and it has never let me down. Probably the best starter motor I've had on anything I've owned.

I've always known it looked different on the outside but, since it worked flawlessly, I never opened it up before. It still works perfectly but since I am doing a total rebuild of every system and I could feel the bushings are getting a little loose, I decided to open it up and do a rebuild.

I was very surprised at what I found. The commutator is not like any I have ever seen - the brush springs press the bushes parallel to the armature shaft rather than 90* to the axis of the armature like normal. You can see in the pictures that the brushes are totally different shapes and not like Healey brushes. The commutator end shaft of the armature is smaller in diameter than a normal Healey starter so it would use a different bushing. At the other end of the armature there is no nut holding the bendix on like a Healey but rather a snap ring in a special collar (obviously I need to figure a way to compress the bendix spring enough to get the snap ring out....).

Clearly standard Healey bushes and brushes won't work so I need to identify this thing so I can try to get parts for it.

On the outside of the body of the starter the following numbers are stamped:
25631B 50 71
2M100 arrow 12V

1st pic - side by side with a 'normal' Healey starter to show visual difference of commutator end
IMG_3886.jpg
2nd pic - the markings I noted above
IMG_3887.jpg
3rd pic - commutator and brush holder end piece
IMG_3883.jpg
4th pic - the snap ring and collar where a nut and cotter would be on a Healey starter
IMG_3889.jpg

Any help will be appreciated.

Dave
 
OP
red57

red57

Jedi Warrior
Country flag
Online
WOW! Thank you John.

So, now the brushes have been found. I hadn't thought of searching ebay for these part numbers but I'm guessing you did.

Tomorrow I will see if they can tell me the application or supply the bushes - I just went to their ebay store and searched for the 2M100 and it came back with 2 sets of brushes... the one you linked to, and one slightly different that says Triumph Lotus MG etc. so I hope you are right and they can help with the application so I can find the bushes.

Again, Thank You!

Dave
 

John Turney

Yoda
Silver
Country flag
Offline
WOW! Thank you John.

So, now the brushes have been found. I hadn't thought of searching ebay for these part numbers but I'm guessing you did.

...
I did a Google search for LUCAS 25631B, which I assumed was the model #. The eBay listing was the first item to come up.

Good luck!
 

Keoke

Great Pumpkin
Country flag
Offline
Well it:

Looks like the old RR starter but I do not have confirming # , I always intended to implement their dynamo but never did.-- Just a guess??
 
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