Re: old old bike
I don't buy old 3 speed bikes generally- but I did a Huffy sportsman a couple years back- didn't like it much.
I grew up racing full Campy Nuovo and Super Record Gitane, Colnago Exxon Graftek and Masi road bikes, and a Paramount track bike.
Thank god for 700 c tires and rims, but anything not made of alloy is just dead weight. We used to have a saying racing "An ounce off the wheels is worth two off the frame".
To me the game is always the same whether pedaling, motorized biking or even in my car: Go as far as you can with the least effort or energy.