I'm looking for information regarding early 1947 specifications for the 500 singles. I have one of the surviving B3T Trials 500s and am in the process of returning the bike to what I hope would have been the original spec.
The oil tank I have looks like a later one and my gear lever has the droop at the toe end whereas the brochure from 1947 shows a straight gear lever without the droop. The ES2 adverts from 1947 shows a straight lever, too.
I've seen mention on these forums that the spec for 1947 mentions that the fork sliders were steel for that year with a small chromed lip. Does anyone know if that was correct and if so, does anyone know of any for sale?
I'll also be replacing the aluminium mudguards and Borrani aluminium rims. The brochure says that the rims were all black for the 1947 Trials: does anyone know if that means no chrome at all? it sounds like it to me. I wonder if the spokes were black, too.
The carb has been swapped for a Concentric but in order to make that fit, the right half of the rear petrol tank platform has been cut off. I'll be trying source one of those, too.
The bike has a steering damper knob which does not look like the ones I'm familiar with: does anyone know if it's genuine Norton for that period?
The parts manuals I have for 1946 and 1947 don't have any exploded diagrams: do such things exist for those years?
I'll attach a couple of photos showing the brochure image, advert, and the bike as it is now.
Any advice will of course be well received, thank you.
Gearbox Casing M46
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Something else I'd like to be able to source is an upright gearbox/shell stamped M46. Mine is now a G5H46 box but apparently it left the factory with a box marked M46. Any information regarding the difference in those boxes would be great, thank you.
I've uploaded a photo showing the cutdown petrol tank platform bracket, too. Worst case I'll have to get one fabricated: at least the one I have would be suitable as a pattern.