For a class project, nine mechanical engineering majors at Yale built a bicycle with a spokeless back wheel. One of them, redditor zhoalander, described the design in a thread at reddit:
It's a single speed setup. We used two cranks and two bottom brackets in the front to gear up the ratio. It goes from (IIRC) 53 to a 13, which is connected to the second crank and another 53 which connects to the rear hub. The rear hub is just a normal ratcheting rear hub that we mated to our belt pulley. Not sure if all these bike terms are right, but that's the general idea.
The front wheel would be almost exactly the same as the rear wheel except that it could be a little lighter. Some of the aluminum can be shaved off since there's no powertrain to connect to.
At the top of the thread, there are imgur links to more pictures of the bike.
Link via CrunchGear
Comments (11)
So I take my hat off for these people. Neat!
yawn
bad idea
how is this better?
wle
people should never do anything I guess.
Reader's choice. We are unlikely to actually know, after all.
Can the next list be 'Who took the longest to die.' or some such.
Sometimes I just couldn't be bothered to sign in for these.
Yeah, the Iraqi invaders sure proved themselves to be total terrorists when they fought the brave US soldiers that were defending their homeland.
Those darn Germans. Ancient history.
This is best illustrated by our glorification of our fiercest bloodiest fighters.....
Wheeeee real Neat these killers!
Probably the first time I actually agree with you. They were defiantly strict times for everyone not in control of the situation. My grandfather on my mother's side fought for the side of Hungary, because if he didn't, he was shot and killed as a traitor. A more interesting story with my dad's side is his father trained as a pilot for Germany in WWI, and fought against Germany for Canada as a pilot in WWII.
Oh crap- We're humans and that's what we do.
Up to 2000 kills in a few hours during the landing in the Normandy.
Hitler didn't kill 6 million people. Any idiot can order the death of someone.