It's all relative and a wheel length would have been regarded as a small gap today. Totally understand what you are saying about the concertina effect and it being caused by fluctuations in speed rather than the size of the gaps but, I suppose, if everyone concentrates on holding a uniform gap it will nullify changes in pace.
Edit. BoardChrisman - Go for it, you looked comfortable.
It's all relative and a wheel length would have been regarded as a small gap today. Totally understand what you are saying about the concertina effect and it being caused by fluctuations in speed rather than the size of the gaps but, I suppose, if everyone concentrates on holding a uniform gap it will nullify changes in pace.
Edit. BoardChrisman - Go for it, you looked comfortable.