"Andy Dingley" wrote in message
...

The reason is most likely that split pins don't allow adjustment of
end-float and even in Georgian times, this was recognised as a
necessity. I've been looking for bare split pins as retainers for a
few years now (I have an exciting life) and still can't find an
example.

I think I saw a pram that did many years ago, it wasn't quite bare as it
held a washer on, then the wheel.