Hi Will Thanks for looking at expanding the list of searchable topics using the scanned copies of Cheval. There is nothing magic about how I have scanned the Chevals, I redeployed an old Windows 7 Computer (no longer supported by Microsoft!) and linked it to a decent scanner that I had previously bo...

For those of you with time on your hands during lockdown, another decade of Cheval copies is now available in the members section of the AOMCC website. All of the 90s (120 copies) are there, in a similar layout to the previous copies, and although not perfect copies all the text and photographs are ...

So long as the dimensions are the same, either will do the job, although you might want to put a smear of silicon rubber on the outside of a metal outer seal. I have reversed the sprocket spacer in the past, and so long as the seal is new and the lip bears on the unworn part of the spacer, it should...

They are just a press fit, or at least the ones I have removed were. Not all that easy to remove without damaging if trying to lever it out, but where it is out of sight, I would suggest cleaning the area of all oil/grease, and then use a sealant (eg. silicon rubber) to make a thick bead around the ...

Hi Mick Thanks for the photo, I think we have a slight difference in what is considered as the 12 -6 axis of the endcap. In my mind, what you show is a cutaway at 11'oclock, which is what I would expect for a Huntmaster dynamo, with the base of the bulge at 6'oclock. As BSA built all the Huntmaster ...

I have rechecked the Lucas documentation I have (Full catalogue 1936-57), and page E12 shows dynamo 20036 (one piece end cap) suiting a 1954-57 Huntmaster. However, an Ariel specific catalogue for 1958 shows 20010, so perhaps the original fitting was this, but it was uprated to the later format of d...

The cap with the wiring hole at 11'oclock is the correct one for a 1958 Huntmaster, there is a "church door" shape grommet that fits into the hole, that can be a bit harder to find that the type used for the earlier plastic end piece. This orientation allows the dynamo cables to be routed ...

Another thing to consider is whether the two dynamo drive sprockets are in line. This will depend on the thicness of the cork sealing washer(s) that abut the inner timing chest. Aim to minimize the runout between the sprockets, this may not be a critical adjustment, but anything that gives the chain...

For those of you with nothing much to do during lockdown, scanned copies of Cheval back to the start of 2000 are now viewable in the Cheval repository in the members section of the website. Having scanned and uploaded these, it is now onward and backwards (is this an oxymoron?)to the 20th century. T...

If there is a nut on the inside,the rest of the assembly is one piece, and can be pulled outwards. However, a combination of age, corrosion and hardened grease can make this a difficult task, but heating the area around the brake arm should expand the alloy and make removal easier. I have presumed y...