Machine show build

**TriNortchopz** · 11-17-2018, 7:49 PM

Definitely looks like an interesting project...What is your overall vision for the build...to be done in 4 monts?

Had to look up about the M20 engine:
The BSA M20 was just part of BSA's massive wartime contribution to Britain's war effort. But it was a very big part. 1937 was its first year of production that would last until the late 1950s. Designed to be simple, rugged and reliable, the M20 was a side-valve (flathead) 500cc air-cooled single with a cast-iron top end...

...126,000 M20s and WM20s (the military designation) served in nearly every field of battle during World War 2. This makes it the most-produced military motorcycle of the war. The M20 was also one of the longest-serving military motorcycles in British motorcycle history, serving from 1937 through the early 1960s. BSA's Small Heath factory was bombed by the Germans in 1940, but mega-corporation BSA had 67 other factories scattered around England, so production quickly resumed.

BSA M20 - webBikeWorld

http://www.classic-british-motorcycles.com/bsa-m20.html

The BSA M20 was just part of BSA’s massive wartime contribution to Britain’s war effort. But it was a very big part. 1937 was its first year of production that would last until the late 1950s. Designed to be simple, rugged and reliable, the M20 was a side-valve (flathead) 500cc air-cooled single with a cast-iron top end. It had a rigid frame and BSA’s pre-war girder front end. Everything on the bike was extra-heavy duty for military use. The M20 […]

and that plunger frame:
The first 'plunger' frames appeared at the Earls Court Motorcycle Show in 1948 & were first used in production on the top-of-the-line 1949 BSA 500 Star Twin. The plunger frame would spread to the entire 500 twin lineup for the 1950 model year.
While the plunger was a big improvement over the antiquated rigid frame, it did offer some suspension travel, it was at best a poor compromise. Plungers were widely used by many manufacturers at the time, for the same reason that BSA chose it. It allowed them to continue to use their old rigid frames (with a few mods), rather than ditching them for an entirely new swingarm frame...An all-new swing arm frame was introduced in 1954.

BSA A7 - webBikeWorld

http://www.classic-british-motorcycles.com/bsa-a7.html

ABOVE: This 1952 BSA A7 featured plunger rear suspension, the transition between earlier rigid frames & the swing arm frames to arrive in 1954. BIRTH OF THE BSA A7 By the onset of World War II, BSA was one of, if not THE largest motorcycle manufacturers in the world. They were making great success of their line of singles, lead by the BSA Gold Star. They’d done a few V-twins in the past, primarily for sidecar duty, but their business […]

and The Machine Show:
The Machine Show is a 30y and older motorcycle show and camp out weekend in Braidwood NSW. March 29th-31st 2019...

The Machine Show

https://themachineshow.com.au/

Photo Gallery: The Machine Show, Australia

http://www.bikeexif.com/machine-show-australia

What makes a good bike show? After hanging out at the first Machine Show in Australia last weekend, we think we’ve found the answer.

https://www.instagram.com/themachineshow/