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Henk

Jan 13, 2011 - 1:15PM

1000 cc twin BSA M40?

email (option): ahum@quicknet.nl

Ian Wright

Jan 13, 2011 - 1:21PM

Re: 1000 cc twin BSA M40?

Hi Henk..Any background story on this one?..I have a magazine article somewhere about a double engined M20 built by a guy who was an apprentice at the tank museum (very appropriate!) ..That bike used oversize M21 engines and was actually around 1400cc.
Bizarrely he had timed it as a single with both cylinders firing at the same time. It was said to cruise comfortably at 70mph or so but was nearly a foot longer than a standard bike.
I thought this might be the same machine but looking at the 80 spoke front wheel I'm not so sure. Interesting foot long gearchange lever. If it is M20 engines it seems like a lot of trouble to go to for 26BHP !..Ian

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

Henk

Jan 13, 2011 - 4:53PM

Re: 1000 cc twin BSA M40?

Hi Ian,

The bike is for sale at www.oldtimerweb.be

Henk.

email (option): ahum@quicknet.nl

Ian Wright

Jan 13, 2011 - 6:24PM

Re: 1000 cc twin BSA M40?

No price shown..and the contact for would be purchasers is in Indonesia...so that could be 'double trouble' ...Ian

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

Henk

Jan 13, 2011 - 6:37PM

Re: 1000 cc twin BSA M40?

I think it's quite a special bike, special but also ugly

email (option): ahum@quicknet.nl

Ian Wright

Jan 13, 2011 - 6:41PM

Re: 1000 cc twin BSA M40?

Ugly...and heavy...and not too good on twisty roads. But it got rid of that spare engine he kept tripping over in the shed ..Ian

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

roger

Jan 13, 2011 - 7:36PM

Re: 1000 cc twin BSA M40?

when i was in the army they had some mini mokes they also had 2 which they called mini mules they had an engine in the front and the rear to give it 4 wheel drive but it was usless they couldnt keep the 2 engines in sinc it was like pulling against each other the only way to drive it on the road was to put one engine in neutral another one on the scrap heap porbably worth money now

email (option): roger.back@node6.com

john harris

Jan 13, 2011 - 7:41PM

Re: 1000 cc twin BSA M40?

Is that 26 bhp and 22½ mpg? Not that fuel "economy" would have been of concern to this builder.

email (option): jonny.rudge@verizon.net

Rob Miller

Jan 13, 2011 - 7:48PM

Re: 1000 cc twin BSA M40?

It could be a handy way to carry some spare parts when you are touring.

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

Ian Wright

Jan 13, 2011 - 8:12PM

Re: 1000 cc twin BSA M40?

With the two engines set to fire 'opposite' to each other it would be easy to supercharge...so you could have four times the BHP of a standard bike... with fuel consumption in the 11 mpg range. Top speed might then peak out nearly as high as that of a badly tuned Japanese 250...( just before the Indonesian frame welding broke in half).. ....Ian

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

douglas

Jan 14, 2011 - 12:04AM

Re: 1000 cc twin BSA M40?

It would make a good sidecar hack!