We made mountain bikes in 1974 out of Schwinn paper-rout bikes. In 74 I also had my own Schwinn Moto-X bike. Nothing was available to buy but Moto-X handle bars and super-strong(Heavy) goose-necks. Could not find a picture but they were just paper-rout bikes with upgraded bars and goose-necks. They also had small mud-flaps made from tin and rubber.
Schwinn made these paper-rout bikes for about 20 years as far as I know. They never changed (except for some brighter colors introduced in the 70s) and had 26 inch rims, as far as I can remember. This is why Mountain bikes have 26 inch rims. Schwinn home made BMX bikes were smaller and lighter, for sprints and turns on small home made tracks we would make in lots. I read once that our track in Bixby Knolls Southern California was the first documented BMX track in history. A race every Saturday.
These were $100.00 in 1974. In 74 $100 was a lot of money, maybe something like $300-$400. The fenders were the first things to come off for mountain rides. Next the chain guard. They were heavy but strong. They were called "clunkers".
My bike weights 31.5 pounds now. I feel like I'm ridding one.....lol.
Edited by Redcarmoose - 10/24/13 at 12:43am