Originally Posted by ADCX Rob:
It was the other way around, 3/16" scale(S - 1:64) models were run on "O", and after the war Gilbert changed the track gauge to match the models. I am not aware of any Flyer narrow gauge models.
Yes, and to run on "O" they had to be made wider than scale 1:64. That is why these engines overhang the "S" track on each side.