Hitchcocks Forum

if someone has this laying around let me know

Our hosts have then for sale I believe.

Couldn't believe it, I had a bloke ring me this morning looking for one, I asked him if he had posted on the Hitchcocks board but it wasn't him

under the principle of there’s more than one way to solve a problem.



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done

What is ATD please?

Automatic Timing Device - the picture is of an auto advance and retard unit built into a magneto drive pinion. These were fitted on Lucas SR1 Magneto-equipped 350 and 500cc UK Bullets between 1956 and 1959(?), and meant that you no longer had to control the timing manually via a lever on the handlebars. When (cheaper) coil ignition replaced the magneto, the ATD was incorporated into the contact breaker assembly.



http://royalenfieldzone.com/products/vi ... e/2726.jpg




A.

Elegant solution Mauri. I thought about trying to modify a chain sprocket version but decided in the end that they were only slightly less rare and that the quickest way to the highway was our hosts.

the original pinion was damaged any way, so it was a trow away part so to speak.

i made it so it can be reversed engineers.



are host don’t have this part at the moment, and won’t have any for the end of the year!(maybe)

I have no idea if this is any use:-

http://1039926.en.makepolo.com/products ... 00171.html

That, at first glance, does appear to be the very thing. It's an Indian supplier, and I'm pretty certain a number of SR1 mag equipped Bullet engines must have found their way out there if they now have used mags for sale with the ATD still on them. The web site in your link appears to be for trade enquiries, so perhaps they would want you to buy a minimum batch of 500!. A