Thanks, for the description, Shawn.
I had been riding my 39 Firestone Twin Flex, on the flat beach bike paths for quite awhile, and didn’t notice any severe adverse effects.
But, I took it up to the Rolling Relics, San Francisco Ride, and put it through its paces.
Oh, man!
What a different bike that is, when you’re having to bomb down some steep hills with the coaster brake applied.
The other thing I noticed, was that the axle nuts loosen up under extreme use.
After that trip, I learned to always check those fasteners before going for a ride.
Great bikes, for general cruising, but definitely not the one you want for the serious hill country.
That Monark design sounds like a nightmare.