Back in 1966 or 67 I was in St Louis and was invited to an operating session at the home of one of the group of O scale traction modellers. Clouser wasn't there that evening....but Hegge was. They showed me modelling I at the tender age of 23 never dreamed of. Among the wonders they showed me was a freight motor equipped with a flywheel the size of a sash weight. They set it going then shut off the juice. That car continued rolling at least 25 or more feet before it stopped. Next they got it rolling again, cut off the juice and stopped it by holding out his finger. The wheels just kept turning until he stopped them.
The things that impressed me about this video were the facility "back polling" through switches and around turns, the track work with lap switches with straight track running through them and the general level of modelling. No sir, they did'nt show nearly all their wonders on this little video. I fear much has been lost since then. Odd