SirMike1983
Riding a '38 Autocycle Deluxe
Schwinn changed the steerer tube gauge for the 1966 models so the stems had an insertion dia. of 21.1. Were the road bikes exempt from this change? I know the Varsity was not and it takes the smaller dia. stems.
Not sure. Something that should be checked comparing the S stem versus the steerer. If it's a no-go, time to try a different stem. I know Traveler steerers and stems did change as well.