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Re: what is a 38"s theoretical top speed?



Graham Fry (fryg@sydpcug.org.au) wrote:
>In regular running 38's would easily roll along at 70-75 MPH where suitable
>track conditions existed, which is not very common. On the Moss Vale passenger
>I frequently clocked 38's at 80 MPH between Campbelltown and Casula.

A rough rule of thumb in the old days was 1mph for each inch of driving
wheel diameter. But this was in the days before long travel valves. The
better valves allowed higher speeds on the same size driving wheels.

Cheers
David