Frank,
the Rileys I meant were the last cars before the Nuffield takeover in the late thirties.
A little googling confirms what everyone has said about freewheels. Two strokes apparently lose lubrication from the fuel when going downhill on a closed throttle, and Saab advised drivers to keep the freewheel engaged as much as possible. It could be shut out however, and it was prudent to do so on long downward stretches.
I wonder if any Augusta people use the freewheel on their cars?
Cesare Once a month or so, just for a few minutes to keep the selectors lubricated. Otherwise, even with Augusta brakes, i prefer not to use it. Mike Wheeler uses his all the time!
Regards, John