718_063 1969 Schwinn Varsity

Here is a 1969 Schwinn Varsity, @ 50.5 cm.

As is usual with American bikes of this era, they were built with an "American" standard bottom bracket shell/housing.  To use modern cartridge bottom brackets and 3 piece cranksets, the bottom bracket needs to be removed and converted.

The original bottom bracket cups are in very good condition once I took the 1-piece crankset out