ES2 speedo drive

You can get top and bottom outlet speedo drives. The one you need is I think a 2:1 ratio. there are two types, rounded type, like the Commando and the square type as on the earlier models.

I know from too much experience that the Commando type can be absolute crap quality. I went through three in six months at one time.

I you get the wrong sort, ie, bottom outlet then the speedo will go in reverse, as mine did when I got it first, some professionals eh?

The 2:1 ratio speedometer drive gear box is for the chronometric instruments, they can be dismantled, but if you reverse the ends to make it a top drive unit, this will also reverse the cable drive.

Later drive units have a slightly different ratio for the magnetic units.

I think the Indian Enfield speedo drives are 2:1 and will fit the ES2.

Hello George. don't know if this is what you are after it has already been mentioned http://www.rgmnorton.co.uk/buy/thin-walled-top-hat-spacer-for-speedo-gearbox_2205.htm

Baz

My commando one sheared the two little lugs off last week. I dismantled it and replaced the rotating ring from a spare I had. To dismantle it you prize out the ring with the drive ratio written on it. This should pop out quite easily with a screwdriver. Then drill out the four 1/16" C/Sunk rivets. The retaining inner ring will then come out.you can then remove the drive ring.

If you want to fully dismantle it, the cable drive part is held in with two brass ends. These are an interference fit and are quite difficult to remove without damaging the main body for the drive unit.