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Works order form ...


Well Known and Active Forum Website User
VOC Member
I have just received the works order form for my bike...in the area "Non-Standard Engine components" it lists the following;

13 BTDC S Pinion
7/7 S Paters S Barrels

Does anyone know what do these things mean?

david bowen

Well Known and Active Forum Website User
Non-VOC Member

the key way cut in the half time pinion at the bottom at 13 BTDC and standard size pinion. 7to 1 pistons standard size bore
Last edited:


Well Known and Active Forum Website User
Non-VOC Member
works order form

Bit late now, what if you wanted higher compression! In any event V. interesting, can you let me know if there is a magic repository where you can get this info?
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