Thanks for all the info. I thought about this because I'm very short (less than 5ft) and even with the changes in the seat post of the varsity sometimes I feel uncomfortable in a 27" bike or even a 26". And I feel so much comfortable in the 24".

I don't want a cheap version of a Bike friday or a Brompton Bike, if I want a small folding bike I probably just buy Brompton Bike but is not the case. I just want a vintage 24" with more than 3 speed... I live in Puerto Rico so flat terrain is not common here... I guess I will change the hub for a Sachs Torpedo 3 speed and use the bike for very short distances.

I'm always looking for a 24" Schwinn Varsity 10 speed but is a challenge here in PR... The "thing" for Schwinn and vintage bikes it's something I used to share with my dad and siblings and we are keeping up the tradition...