Hi Micheal

Just Googled what you are looking to achieve i.e. somehow turning the rotor not from the end of the crank but from where the dynamo rotates.

I haven't seen it done, but if someone has done it on an expensive Vincent.....then maybe!!

Regards

Pat

ps I would still go down the route of a reconditioned dynamo and re-silvered reflector even if I could afford a Vincent!

email (option): sacombsashtrees@hotmail.com

Hello Michel,

The Kubota alternator is a permanent magnet alternator,
Much like the "Alton" and the "Powerdynamo" are.

The good thing about it , is that you do not need the stator coils, so it is much compact, with powerful
Permanent magnet, but on the other side, it always has some resistance for turning, whether the battery needs charging or not.
Whilst traditional alternator, like the dynamo, rotate smoothly when not charging is needed.

I saw at the past an E3L Lucas with a "window" cut on the side, (on the "width" of it, on one side)
The internal coils where gutted, and replaced by a small pulley.

At the time of putting the "dynamo" together, a belt inserted from the "window", the internal axle
(What was previously the armature) inserted, with the belt now on the pulley,
And after all was mounted, the other side of that short fan belt, drove a small Suzuki alternator
Which was mounted above the dynamo.

I was quite a while ago.
Wish I had taken a picture…

Cheers,
Noam.

Alton do an alternator for bikes like the BSA A10. It is the same size as the dynamo and an easy fit.

Only real difference is it is belt driven.

I just can't imagine where you would easily fit an alternator for something like M20s.

email (option): sacombsashtrees@hotmail.com

Thanks a lot to you all.
I'm located in Israel. These small alternators are also fitted on other engines and generators.
I will think it over again.
I intend to take the drive from the magneto.
I will post as soon as something will proceed.

Hi Patrick,

"Alton" also does an alternator for the M20
Which is a direct replacement for the "Lucas" and driven the same.

I have one of them on a WM20 ad it works great, only add some noise.

Noam.