help identify Bosch ZEV armature

[Scooter6]

Good evening,
I have a Bosch ZEV 45 deg parts mag I am wanting to make functional and the armature is missing the collector ring and front bearing. I am wondering if this armature is for sure ZEV before I continue. There are threads in front of the collector ring, but I do not see a nut in the Bosch ZEV parts list and cant find pictures of ZEV armatures that do not have a collector ring on them to know what it looks like.
This armature is marked 45 deg.

I am probably going to make some parts for this to keep its cost down. I do not have an interrupter housing and I know it needs to be made of brass and not sure why those are not aluminum. I do know why the are not iron to not interfere with magnetic field.

I need to replace the points and points base because it is for CCW and I need CW.

I apologize if this topic has been covered, I tried a search and have not found the specific question of armature ID.
Please let me know what you know.
Thank you,
Scooter

Bosch armature 1.jpg

[BoschZEV]

You should find the following thread useful:

https://www.britbike.com/forums/ubbt...mature-magneto

[BoschZEV]

p.s. I have a ready-for-total-restoration Bosch ZEV that's surplus to my anticipated needs. Although I rarely sell anything (because, I never know what I might need), if you need it, make me an offer I can't refuse.

BoschZEV.jpg

[Scooter6]

Good evening,
Thank you for the reply and thank you for offering magneto. At this time I cant bring myself to commit because mine is going on a Excelsior engine that seems to be taking financial precedence. I will probably make parts or move on to the Midco mag that came with the engine. I have not taken it apart yet.
Thank you for the detailed article, I read it the other day, but still did not see picture of the threaded part of the front of armature to see what a nut looks like. Collector rings I have seen do not look like they have a recess for a nut and it looks like the bearing is directly in front of it.
I am wondering about a source for the front bearing? That is something I cant make.
Thank you,
Scooter

[BoschZEV]

Good evening,but still did not see picture of the threaded part of the front of armature to see what a nut looks like.

Sorry, I didn't realize I hadn't posted a photograph on that site of the ZEV armature with the slip ring removed. The shaft under the slip ring is a cylinder, not threaded. The armature you have isn't from a ZEV.

[Scooter6]

Thank you for letting me know about the armature. That just continues to be my luck with project Excelsior engine. Sounds like I need to consider your mag. I will PM you with a couple questions.

Any idea what model this armature is from? I figured it was ZEV since it is marked 45 deg.
Thank you,
Scooter

[Scooter6]

Good evening,
I am wanting to put this magneto on 1920 Excelsior engine. I have parts to build one magneto but I have two types of housing assemblies and magnets. One has two magnets and the other has one magnet.
Does anyone know which would most likely be period correct? I have tried to find 1920 photos of cycles with mag but cant tell.

Also wondering what the pin screw is for in the back cover? Refer to attached image. pin in back of Bosch ZEV.JPG
Is the end play shimmed behind the bearing on the armature. Mine have what I think is too much.
Please let me know.
Thank you,
Scooter

[bernhardt]

Are you asking what mag did it come with originally? 1920 Excelsior came from the factory with a Berling E 21 mag. The Zev can be used if it's the correct rotation and 45 deg.

[Scooter6]

Good morning,
Thank you for letting me know the Excelsior did not use Bosch as option. I do plan to put a Bosch ZEV on and I am wanting to use one that is correct for 1920.
Thank you,
Scooter