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Re: BSA B40 Military M2 1968

Engine B40GAKH6624 is form the last batch of 25 spare engines supplied to the Australian Army. The KH is the date code indicating this one was produced September 1972 as most of this batch were. The British Army received 75 spare engines form this batch of 100 spare engines made July-October '72.
The B40M mentioned at the start of this thread is A B40 Rough Rider sold on the Australian civilian market. It is in effect a B40 Military Mk2 but having been sold new on the civilian market it has no military history - the Australian Military forces did not buy any B40 Mk2 machines, only Mk1 machines.

Re: BSA B40 Military M2 1968

I ran a British Army GB40 for a couple of years....That also had a wide ratio box that wasn't very pleasant for daily road use...Whether it was the same box as the Aussie B40s I have no idea...I took mine out and replaced it with a 'std' gearbox which was a great improvement...There was and probably still is a strong market for the GB40 gearbox clusters....Much sought after by the trials riders...I nearly bought another GB40 last weekend but was beaten to it by another buyer....Ian

email (option): ian@wright52.plus.com

Re: BSA B40 Military M2 1968

We make a stronger version of the WDB40 gear cluster using as much of original BSA gears as possible.

This link shows the gears and how to use them.

https://pesltd.uk/?product=PES0003

Mark

email (option): pes.sales@btconnect.com

Re: BSA B40 Military M2 1968

Is the filler cap on the Aussie B40s on the centerline of the petrol tank or offset to one side?...I have examples of both tanks...I'm led to believe the offset cap was only fitted to the last year of Army B40 production, to make refilling from a jerry can easier....Ian

email (option): ian@wright52.plus.com

Re: BSA B40 Military M2 1968

The petrol tanks with the filler offset to the right were not fitted to any Military B40's when produced new at BSA. I have a service sheet which dates their introduction to the end of 1970 i.e. some months after the last complete machine was produced. They were a replacement spare supplied to any of the armed forces which used the B40 Military who ordered replacement tanks from BSA after that date.
Being offset to the right the filler is positioned at the highest point on the tank when the bike is on it's side stand, meaning the tank can easily be completely filled with fuel.

Re: BSA B40 Military M2 1968

Rupert, would you email me please. Questions about the MKII. I had one. Phil

email (option): philliplye@aol.com

Re: BSA B40 Military M2 1968

Hi Phil, Email sent.

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