Yeats Sidecars 1919

Yeats sidecars were nearly as large as Goulding Sidecars that eventually packed up trading in Australia and moved to USA. The original building still exists and with what is written on Google about them they patented this chassis in the twenties, quite a innovating and progressive design especially the twin leaf spring axle arrangement.

Patent US1388387 – Chassis for side cars of motorcycles – Google …