Here’s a look at the vintage 1924 Douglas that Andy has restored and fabricated or modified many parts for…. including the crankshaft, con rods etc.
Tarsnakes
Motorcycling Downunder
Here’s a look at the vintage 1924 Douglas that Andy has restored and fabricated or modified many parts for…. including the crankshaft, con rods etc.
Tarsnakes 
Wow looks like the rear wheel is driven from a standard B or C section belt.
We’ve come a long way in 96 years of MC development!