Below is an after and before of this ‘57 Schwinn 24” I built. I love the 1976 Schwinn Bicentennials they offered with this accessory seat. So I built my own version. I don’t care for adults on 20” bikes as they look out of proportion with the tall seat posts. I’ve had this bike in the back of the barn going on 10 years that I bought from an old hot rod friend that has passed on.