The Wright brothers ran a bike repair shop, so they would have learned from looking at the bikes made by other companies that were left to them to be repaired.
From what I can find, the Wright Brothers did not invent the bicycle. I found an article that you might find interesting. I have posted the link below. This article states that the first "modern" bicycle- one with pedals and two wheels - was invented by a man named Kirkpatrick MacMillan. http://www.catalogs.com/info/sports/who-invented-the-bicycle.html
In 1899 after Wilbur had writing a litter requesting info. about flight experiments.
Both brothers attended high school, but did not receive diplomas. Orville dropped out of high school after his junior year to start a printing business in 1889 I did find something about his highschool, he attended Central High School in Dayton for additional studies, in Greek and trigonometry after the move.
The latin root for bicycle is "bi" which means two, and "cycle" which means wheel or circle.
private info.
Well one of the many thins that happened was there was the first Rose Bowl. For more info or for more things that happened just visit this link: http://en.wikipedia.org/wiki/1902
Depends on what kind they are. Check out sheldonbrown.com, parktool.com and bicycletutor.com for info on how to identify your parts and what to do about them.
Brothers Merkel have been making guns in Suhl since 1898. The current importer is GSI Firearms - see related link.
In 1936 by David Madienguela, but they weren't used like they are today until the 1970's or so
Depends on what's wrong with them. Too little info and too many options to answer here. Check out the posted links for repair tips and general bike maintenance info.
I can find no info on a song or artist called Four brothers, however there is a folk group known as The Brothers Four. See www.brothersfour.com Also there was a movie in 05' called Four Brothers.
I believe in the 90's by Nirve, I own one but its very hard to get info on it, great riding bike!