Dave; I did not go through all the charts that kommando posted for you but I did look at a few gearsets. All the STD and SC sets I looked at had no numbers stamped into any of the gears. The only gears I could find with stamped numbers were two SCT H gears that were stamped 42-3210. These gears look like the STD/SC H gears but would have a slightly different size bushing to fit the roller bearing layshaft. The stamped in number would prevent these gears being used by mistake in the non roller bearing boxes I suppose. Interesting though is that the oblong holes in the gear used to engage the F gear are a little shorter than the holes found on the H gear used for a bushing layshaft.
Given that your gears have numbers for to identify them I would expect that they were not normal gears for any bike. Could you post a photo of the other side of the gears?
When I look at your photo the gear on the left with the inner splines must be the C gear but looking at the mating surface it could not engage either a STD A gear or SC A gear so must be for some other box. Maybe you can find an A gear that matches that gear for indent purposes.
Last edited by Gordo in Comox; 07/22/203:16 pm. Reason: added info
The roadside repairs make for the best post ride stories.
Thanks for the efforts I have also looked through a lot of parts books and not found a match yet. I would suspect they are pre S/A gears. Interesting but not a solution to the 67-3226 gear that I am (still) looking for to complete a DAY gearset. It does seem that the majority of the S/A gears have no stamps...makes ID all the more interesting... For my DAY cluster I have one gear that is stamped 67-3076 which is from an early Star Twin wide ratio box....same gear as DAY 67-3207. Now if only I can find an earlier gear to deal with my missing 67-3226.....
1958 BSA DBD Gold Star Clubman 1957 BSA Gold Star - work in progress 1965 Ducati 250 Scrambler 1971 Ducati 250 Mk3 1977 Hercules GS175 1981 Ducati Mike Hailwood Replica (long pause) 2005 KTM 450 SMR - street legal (for going to the corner store)
Hi All, The gears in question are not like the earlier rigid/ plunger BSA , or the C range heavyweight box The gears 3222, 3224 have the strong engagement dogs like those in the competition gearboxes The A10 and GS gears are usually stamped EN36 (steel type) lesser / older models can have V18 stamped on the gears (Vibrac ??)