Hi Marco

That is an interesting one! I've not seen that done before. I will stand being corrected on this, but I reckon that it is a later addition, and if you want it to be accurate then you would need to remove the added section. .. Upon which I stand back to be proved wrong :-) Duncan

Do you have to be a member of HMVF to view the pictures on there?

Rob

email (option): robmiller11(a)yahoo.co.uk

I thought that I had seen this type of thing before. Is it possible that BSA were doing it when the first post-war M20s built with WD type parts ? The late-war WDM20s all had the Vokes cutaway.

Here is Marco's tank. I've seen this dummy corner mod on a cutaway tank before. You either leave it as it is or remove the dummy corner for a late war Vokes filter tank. Ron

email (option): ronpier@talk21.com

One of my 2 tanks has the rear corner put back on like that but mine also has the base filled in, its only the extra seem which gives it away its so well done.

I always assumed that it was a post war adjustment either in the BSA factory or by one of the big ex WD specialist dealers.

Rob

email (option): robmiller11(a)yahoo.co.uk

The question I ask now is'
But for that 83377 chassis number the crankshaft needs it with the filter above or not?

email (option): m.ciucchi@email.it

Marco 83377 was the 1,160th bike from 15,000 built under contract S1048 ordered in Sept 1942 and mostly built in 1943 up to November. This is what is written in the historical facts on this site. The choice is yours. Ron

During the latter half of 1943 the girder-fork steering-damper was removed from all new machines, the crankcase sump-shield was redesigned to become a pressed steel item incorporating additional protection at the sides for both the engine and frame-rails, and the fuel tank was altered by having the rear offside corner removed to accommodate the substantial hose section leading from the tank-top mounted Universal War Department pattern Vokes air filter to the carburetor air intake. This last modification was carried out on a large proportion of machines destined for service in hot, dusty climates. By early 1945 the Vokes filter was fitted as standard to the fuel tank of all new models irrespective of where they were destined to serve, the filter being secured to the tank by mounting-strips attached to the previously redundant knee-grip locating holes on either side of the fuel tank.

email (option): ronpier@talk21.com

Thanks, now I'm a bit clearer. I will remove the part of the tank for the passage of the filter tube .....

email (option): m.ciucchi@email.it