Radial Motorcycle's

Looking at the Millet with it's direct drive in the rear wheel made me wonder?
Engines of this type are notoriously hard to get a slow tick over. even 500 rpm will be optimistic
So if we assume a standard 26" wheel, my rusty maths make that 38 MPH. !!!!!
It's hard to imagine what the gyroscopic effect of that rotating mass had on the steering as it accelerated ?
It also appears to have a rudimentary form of trailing link suspension at the front with a leaf spring.

When these engines where used in aircraft to get them to slow down the engine was " Bliped " turned of and on,
later models where made to run on alternate cylinders
Oh to be able to go back and just listen to the discussions of those days.
Brian.
 
Try this one for size.
I think goggles are the order of the day behind that.
Brian
 
A little off topic...
However definitely fits a hobby machinists forum:

 
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