When my dad bought his new GF (below) in 1951, he was living in an outback mining town in Western Australia, and managing the family sheep station (500,000 acres). The town was (and still is) Ora Banda.
Every week-end he would ride the 40 miles on a corrugated gravel road, into the large gold mining town of Kalgoorlie (home of the Golden Mile; richest square mile on earth).
Up to a dozen other thirsty young men (miners) from nearby mining operations (shows) would ride along as well, heading back to their mines in time for work monday.
Dad said they liked their bikes to be rowdy, and the silencers had all been thrown away early in the piece. The straight throughs had a great Brumble!
To avoid (or reduce) trouble from the Kalgoorlie traffic cops, when they reached the outskirts of the town (near the illegal Two-Up gambling ring), they would stop and shove sticks and bits of bushes up the pipes before proceeding!
The first pic is with the bike new,
the second is a bit later on; no silencers!
Richard