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War Department: 1944 BSA WD M20

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This is a 1944 BSA WD M20 and it’s in Livonia, Michigan. It’s listed on eBay and the current bid price is $3,940 with three days left on the auction. There are only 855 original miles on this war machine!

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The BSA M20 is powered by a 496cc single-cylinder with 13 hp and it was offered up for war duty (hence the WD) in 1936 but it was deemed not reliable due to excess engine wear. By 1938 the company got the reliability issues solved but they were still slow and heavy with little ground clearance. But, the war was on and transportation was needed so more and more orders were placed. BSA (Birmingham Small Arms) produced over 126,000 motorcycles for the war effort during the years 1939-1945 – about a quarter of all of the United Kingdom’s industrial production – most of which were either the 350cc B30 or the 500cc M20.

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This particular example came from an elderly couple’s barn where it had been in storage since the 1960s, according to the seller. It didn’t take much work to get it working great again and supposedly it’ll start on the first or second kick! That’s more than I can say about myself. The seller hasn’t even washed it, just to keep it as original as possible, dirt and all. During the war, rubber was scarce so handgrips were made out of canvas and it looks like this bike has one of each. This is a great piece of history, and one that you could use regularly and there is no doubt that you’d get asked about it every time you topped off the gas tank. I’m a huge BSA fan, are any of you also fans of these bikes?

Comments

  1. Avatar dirtyharry

    A very nice original bike. Since it only has less than a 1,000 miles, I am surprised to see a “rebuilt engine tag” dated in 1959. I guess there could be other reasons besides a broken odometer. These are a little bit of a challenge to ride. The operative word is slow, clunky with poor brakes. Likely top speed of around 50 (I guess that describes most military vehicles from the 40’s). I think it is a great find and would love to have it. I am slow and clunky too.

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  2. Avatar Fred W.

    A true museum piece. How often do you see a military motorcycle that is not either amateurly or over restored? This is exactly what one should look like- original paint, ridden hard and put away wet, just like in wartime.

    Like 0
  3. Avatar geomechs Member

    I’ve always been a fan of BSA. Some years ago I had a ’59 B-33 Sportsman. Heavy (it weighed as much as my friend’s 650 Golden Flash) and underpowered (27 hp?) but it got the job done, just as long as you weren’t in a big hurry. I’d dearly love to add this bike to my collection but my budget at present is telling me to curtail all purchases except for the toys already in my collection. But it’s sure tempting. Someone’s going to love this bike…

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  4. Avatar Busyditch

    I have always had a soft spot for the Brits. Back in the 60s you could buy a decent Beezer or Trump for $500. But my favorite tee shirt said “Triumph- turn an ordinary man into a mechanic”! You needed to know everything about these bikes in order to not be stranded on the road. A long ride involved a pocket full of tools, plugs, points, and a spare fuse. Just like the British auto industry, these bikes were plagued by the curse of The Prince of Darkness- Lucas!

    Like 1
  5. Avatar Ben T Spanner

    In the mid 60’s i bought a 1946 Triumph with a bad wheel/axle bearing. The seller said none were available. I took the bearing to Bearings Inc. who looked up the number and said “this is British, we can have one in 2 weeks.” They did

    Under the upstairs landing of my student area apartment, there was an Ariel four square, a BSA Rocket? and a Norton, all rusting away. Per above, at that time,they weren’t worth much.

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  6. Avatar Bill

    A friend of my Dad’s used to buy these from surplus and race them on a frozen lake. Left a couple on the bottom when the ice got too thin. Not too many of these around in this kind of condition. Cool bike.

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  7. Avatar Robert White

    I restored a 650 BSA Thunderbolt and sold it for $2700.00 back in the 90s. Had a Triumph 500 Tiger as well. After I sold my British bikes I decided they were not big enough for my needs. They are certainly great looking bikes, but not enough HP or CCs IMHO.

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  8. Avatar Doug Towsley

    I have a number of BSA’s. Great bikes. This one sadly would best be a display or museum piece. While it may run, it wont for long. Bikes that have sat that long need a complete overhaul. The Maggie wont last long (Capacitors, and shellactitis) the Dynomo wont either. (Bearings need service and the seals will flood the armature with oil)
    Gaskets are long gone, and unless pickled carefully with oil or preservatives the internals will have bits of corrosion here and there and when run the Swarf will foul the mains and pump..
    They are cool bikes but this is a flat head with a 3 speed. Not exactly modern road friendly. You could ride it with another engine (B33 or B34 and 4 speed) and then swap it back to keep original but better to buy a actual road bike. Theres multiple projects or runners that come up all the time. Its worth about where its at now. ($3k and maybe up to $5k if really motivated)

    Like 0
  9. Avatar Derek

    I eventually got over 80mph out of my M20. It now lives in sunny Finland… D.

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  10. HoA Howard A Member

    I’ve always liked “Limey’s” myself. Sorry, I don’t believe it only has 800 miles. The wear by the foot brake , general shoddiness, I think someone rode this bike for many years with out a working speedo. Still, a wonderful find. Great alternative to the “standard issue Harley”. I’ve had many bikes, but this would be a challenge to ride. British bikes, which seemed to be under the radar for years, I’ve noticed, have started to creep up, as I’d like to have a British bike for a retirement project, but something a little more civilized than this. Here’s a WD M20 with 550 miles on it. Quite a difference. Cool find. Thanks Scotty. http://www.ewarbirds.org/vehicles/1944bsamd20.html

    Like 0
    • Avatar Doug Towsley

      Where are you located Howard? I am near Portland Oregon. I have a number of BSA’s I will be selling soon. I have one I hope to have ready to put up for sale this weekend.
      Its a 1952 BSA A10 Golden Flash 650cc. Plunger frame so similar styling. But much more useable. I also have some performance parts as well if you would like a “HotFlash”.
      Or,,, more practical than a 1950s bike. I have a couple BSA 441s (Thumpers) and some BSA A65s (unit twins) Several years to choose from. ALL are project bikes, but I have extensive parts, and literature including factory workshop manuals, Parts books and service manuals. Way too many projects and I have material needs so need to be sold.

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      • HoA Howard A Member

        Hi Doug, I’m in N.Wisconsin. The only BSA I would consider, is a Rocket 3. ( I know, good luck) I’d “settle” for a Trident though. Thanks for the offer.

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  11. Avatar bill

    BSA—-Bast##d stopped again.

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    • HoA Howard A Member

      HA! Electronic ignition settled THAT problem. :)

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  12. Avatar Jim Norman

    Old joke:

    Why do Brits drink their beer warm?

    Wait for it…

    Lucas refrigerators.

    Like 0

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