Re: Im Davis, need help identifying my schwinn's
The red one could be a 52, but the other is much later, in my opinion. Look for the serial number on the red one either under the bottom bracket or on the dropout. Under the BB is older, on the dropout is later. What size are the rims, 2.125 or 1.175? With the serial number you can not only know the year, but even the day and month it was made. What does it say on the chainguard?
The red one is a much better choice for an in frame motor. Nice bike.
Someday when I grow up I will probably lose interest in toys with wheels, but until then...