Wednesday, 2 December 2015

More Electrics

It transpires I have the wrong points for the dynamo, so I want to source the correct ones before I finally test the Magneto. This unit is back together but needs a test before going into the bike and hence I would like the correct points. It is a bit of a gamble if it works but I have not invested much in it yet!

The Dynamo in now on the list and it has taken me a while to get to ordering the new armature. This was ordered as a kit with armature, bearing and field coil. with a trial fit, it was impossible to get the armature past the coil, so I used a couple of engineers clamps and tightened up the pole shoe against the case so that I could really tighten the screw and make sure the armature would pass past the shoe.

This technique worked a treat! I did have to drill out the middle fixing hole - the one that has a captive bolt and connects to the timing chain cover.

Apart from that, all the castings for the dynamo have been vapour blasted and I can now assemble with the new parts.  With new main bearing, it spins freely.


  1. First congratulations on how far you have come with a beautiful restoration on a difficult model. I'm currently restoring a 1946 3T, I would very much appreciate corresponding with you as you have had far more experience with this model. Thank you, Daniel

  2. Daniel, I'd be happy to try and help you get your bike back on the road. Send me a message with your email or place a comment here and we can have a chat about your 3T.
    There are a lot of differences with the 3T that make it quite difficult to obtain some parts.

  3. How do I get in touch? I have a 1947 3T mostly original.

  4. I have a 1946 3T which is very original. I sent photos of the seat recently for Matt Harrington. I still have them if useful to you. Let me know on