Honing gearbox numbers

[wade.edwards]

Have an April 1946 BA. All good.

I get the 1BAP case code but haven’t found an explanation for the A and the M over the 3

Anything significant there?

[nevhunter]

They Are CASTING Numbers and show what Pattern is Used. . If it includes a date it May Be used on Models earlier than the year of Manufacture. Nev

[Roger Gwynn]

1= shell, BAP = BA gearbox, with pivot mounting, M3 = the 3rd version of this part, frequently in Roman numerals. Ariel number is 3000-35

[wade.edwards]

Okay, thanks Nev and Roger. One day, no one will know these details.

[Roger Gwynn]

People say that sort of thing to me quite often, bear in mind I have spent most of the last 50 years working with Ariels as a full time job, if I haven't picked up some info on the way I must be an amoeba. Anyone can do it with a little or sometimes a lot of research. In this case look through the parts books at the 'do not use numbers'. I have compiled a cross reference list of Burman, AMC, Ariel and Panther numbers to make things quicker.

[nevhunter]

Generally cast in Numbers apply over a lot of similar Parts or Even a Part of a Pattern. Not a Lot of use to the Average collector unless you are Interested in when a design change happened We are Lucky with ARIELS with All the Information and documentation that Has Been retained. SO
ME Part Numbers show the date first Introduced but I doubt the assembly line was so Particular about what and when the Part got used. Ransome and Marles used to Make all the crankpins at one time. Is that so.?

[Roger Gwynn]

Yes the crankpins and bearings were made by R&M although parts suppliers for other parts would vary so possibly other manufacturers were used at times. When a factory is producing several thousands of a model in a year they are unlikely to be using many left over or whatever odd parts they could find lying around, I don't really know where this often quoted idea comes from, it can't all come from the Triumph sit-in days can it, where tis certainly happened. I am not saying that there was never any cross over at the change of the year, I have a very late 1954 MKII with a steering lock on the bottom yoke and not on the frame, it is a very original bike that spent all its life in India so anything that hadn't been badged was original.