• Welcome to the website of the Vincent H.R.D. Owners Club.

    Should you have any questions relating to the Vincent H.R.D. Owners Club, or Vincent H.R.D. motorcycles in general, please contact Graham Smith, Hon. Editor and Webmaster by calling 07977 001 025 or please CLICK HERE.

    You are unrecognised, and therefore, only have VERY restricted access to the many features of this website.

    If you have previously registered to use this forum, you should log in now. CLICK HERE.

    If you have never registered to use this website before, please CLICK HERE.

Stamp code under G50


New Website User
VOC Member
On my timing side crankcase there is a stamped code within a circle. The location is under the G50 right hand pivot bearing plate close to the kick start shaft hole.
I looks like JD L 15. Anyone who knows what it might mean?
/ Patrik

Number under G50 - JD L 15.JPG


Well Known and Active Website User
VOC Member
"John Dale" was the company that did many of the castings. I have seen an explanation of the foundry codes, but I forget where.



Well Known and Active Website User
VOC Member
VOC Forum Administrator
T5/<n> is (also) the part number for the primary drive outer cover. T5/3 is for a Twin, T5/4 is for a Comet. Not sure about /6.