Author Topic: Albion EJ Final drive sprocket 17T  (Read 1120 times)

Offline Albion EJ

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Albion EJ Final drive sprocket 17T
« on: February 13, 2024, 03:23:32 PM »
Hello everyone, totally new here but hope someone can help me.

For my Albion EJ gearbox (3-speed, clutch and kickstarter) I am looking for the 17T sprocket (part BJ12).

As attachment a picture of a 14T sprocket (part BJ12a), and 2 copies of the Albion part list, which I can share with you if you like!
The 14T sprocket is available as well.

Does anybody knows where these can be bought?

Thanks in advance, Cees

Offline R

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Re: Albion EJ Final drive sprocket 17T
« Reply #1 on: February 13, 2024, 04:51:50 PM »
Villiers Services can supply some varieties of  Albion 17t sprocket  ??
https://villiersservices.co.uk/product/e8868-albion-gearbox-sprocket-17-tooth-12-x-316/

Its also not impossible to grind the teeth off a smaller sprocket, and shrink/weld a ring of new teeth on.

Offline Vreagh

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Re: Albion EJ Final drive sprocket 17T
« Reply #2 on: February 13, 2024, 07:50:30 PM »
I may be talking nonsense but that looks very much like a final drive sprocket off a 4 speed Royal Enfield Bullet. The gearbox was Albion, even the spline looks similar but could of course be a different size.

Offline Albion EJ

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Re: Albion EJ Final drive sprocket 17T
« Reply #3 on: February 13, 2024, 09:04:28 PM »
Thanks to you both.

The one at Villiers Services doesnít fit unfortunately.

I got another tip on RE so any clue where to find them?

Offline Vreagh

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Re: Albion EJ Final drive sprocket 17T
« Reply #4 on: February 13, 2024, 09:21:29 PM »
Hitchcock motorcycles is the goto place for Enfield stuff. They have a good website. All the 4 speed gearboxes as based on Albion even the internals and the clutches but the dimensions may vary. Bullet final drive chain is 5/8" ◊ 3/8", I think the 250cc bikes used a smaller chain, might be worth checking.

Offline R

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Re: Albion EJ Final drive sprocket 17T
« Reply #5 on: February 13, 2024, 10:50:19 PM »
You have tried Villiers Services for all possible choices. ?
They have quite a range

https://villiersservices.co.uk/product/e8231-gearbox-sprocket/
etc

Offline 33d6

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Re: Albion EJ Final drive sprocket 17T
« Reply #6 on: February 14, 2024, 04:23:00 AM »
Iím quite familiar with the EJ box. Albion boxes are common in the type of bike I favour.
Sprockets are not a problem. I have mine made. I enquired at an industrial transmission place who directed me to the machine shop that made their sprockets. Easy as that.
Sprocket blanks come as either ďflat plateĒ or with a central boss. How the job is addressed depends upon the capabilities of the machine shop in question.
Take both your sample sprocket and the sleeve gear it fits on when you make your enquiries. Be organised and prepared to make a decision on the spot. Most firms dislike dealing with the average motorcyclist. They dither and moan and always cry poor. Be businesslike. We could start a whole new thread on why businesses canít be bothered dealing with motorcyclists. They are their own worst enemy.
Tell us how you get on.

Offline R

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Re: Albion EJ Final drive sprocket 17T
« Reply #7 on: February 14, 2024, 06:39:03 AM »
What would that cost - ballpark ?

But keep your eye out.

I have this bunch - for some model of Villiers. ?
While they look a little crusty, they clean up well.
Ex-Singapore stock, superficial cancer.
And by co-incidence, they are 17t.
Make ideal donors to reband a worn out one ?

https://i.postimg.cc/Dz1rGMxq/String-of-sprockets.jpg

Have smaller ones also - with the 5-5 splines. But only 12 teeth.

Offline 33d6

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Re: Albion EJ Final drive sprocket 17T
« Reply #8 on: February 14, 2024, 09:45:10 PM »
Given that I have been having various sprockets made in various numbers over a twenty year period itís only possible to say the price is reasonable.
There is no ballpark figure as there are too many variables between individual circumstances. We donít even know what country the enquirer lives in. All we know is that there will be an industrial transmission place not too far away and they can solve his problem.
I can also say itís not worth the bother of trying to adapt sprockets from other applications. New sprocket blanks are heat treated to leave the centres machinable. Fully formed sprockets such as yours are usually heat treated throughout and a pig to machine. There is no saving in going down that track.
Having stuff made is a business proposition. It has to be reasonable for both sides. No business can make things at a loss nor can they be too expensive as that drives customers away. For repeat business both sides have to walk away happy.

Offline R

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Re: Albion EJ Final drive sprocket 17T
« Reply #9 on: February 14, 2024, 10:19:37 PM »
I've had a number of sprockets rebanded.
This is quite economical.

I shudder to think what getting a spline cut might be ??
As a one off.

I see that Villiers Services are obviously getting a range of sprockets remade
(if they are not buying up old stock ?)
At quite reasonable prices.
So in quantity its quite economical....

I'm surprised they don't have the model required here ?


Offline 33d6

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Re: Albion EJ Final drive sprocket 17T
« Reply #10 on: February 14, 2024, 11:55:27 PM »
Unless you enquire youíll never know how much spline cutting would cost. Again, it depends on the capability of the machine shop in question.
As for one-offs it is common practice for a business to have a minimum price for any job. If so I ask how many items I would get for that price. I might only want one but if I can get more for the same price I both have a spare plus others to sell/trade/barter so as to offset my costs. Itís amazing how people pop out of the woodwork when they find out you have this stuff.
You have to stop thinking like a hobbyist and start thinking like a business owner.

Offline R

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Re: Albion EJ Final drive sprocket 17T
« Reply #11 on: February 15, 2024, 12:08:54 AM »
Wasn't I ??

You have to stop thinking like a hobbyist and start thinking like a business owner.

Quote from:  
I see that Villiers Services are obviously getting a range of sprockets remade
(if they are not buying up old stock ?)
At quite reasonable prices.
So in quantity its quite economical....

Offline cardan

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Re: Albion EJ Final drive sprocket 17T
« Reply #12 on: February 15, 2024, 09:58:54 PM »
I wonder what is the world-wide annual demand for lightweight Albion gearbox sprockets? I have a sprocket box, so now I'll have to go out and look.

Leon

Offline R

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Re: Albion EJ Final drive sprocket 17T
« Reply #13 on: February 16, 2024, 01:33:11 AM »
That reminds me of someone who I came across, who had a significantly large quantity of
Norton Navigator piston rings, in various oversizes.
We calculated that based on demand, he had approx 40,000 years of supply !!
He did have rather a lot ....


Offline iansoady

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Re: Albion EJ Final drive sprocket 17T
« Reply #14 on: February 16, 2024, 10:39:06 AM »
What about this - to be bored and welded? I used a big one for the rear wheel sprocket on my Tri-Greeves.

https://simplybearings.co.uk/shop/p20229540/Branded-17-Tooth-08B-Simplex-Platewheel-for-1/2-inch-Pitch-Chain/product_info.html
Ian
1952 Norton ES2
1986 Honda XBR500
1958-ish Tre-Greeves