What is Digg?Sponsored by HowLifeWorks
How Smart Guys Keep Their Faces Looking Young view!
howlifeworks.com - Why men have finally started to use certain anti-aging skin care products...
119 Comments
- DardanAeneas, on 05/28/2009, -2/+71The inventor "believes that people will be drawn to the bike because it requires more work to cycle and therefore will provide more exercise for the cyclist than a conventional bike."
Yeah... - reshep, on 05/28/2009, -0/+46Pictures:
http://www.china.org.cn/china/photos/2009-05/07/co ... - AndrewRidgely, on 05/28/2009, -0/+33If you look at the pictures, over both of the wheels there's a series of bearings that sit directly on top and are attached to the frame.
Because of the shape, the diameter of the wheels never changes, even if the distance from the edge to the center can. What this guy had done is essentially sit the bike on top of the wheels, at this fixed diameter, rather then attach at the center. He can then allow the center of the wheels to wobble (and it looks like there are movable springs attached there), while the seat remains at a constant height. - ifruit, on 05/28/2009, -30/+59THIS IS ***** STUPID.
- UnFriendlyFire, on 05/28/2009, -4/+32This guy doesn't know Americans very well.
- Takfam, on 05/28/2009, -3/+31FTA: "people will be drawn to the bike because it requires more work to cycle and therefore will provide more exercise for the cyclist than a conventional bike."
Hey guys. I made a new sidewalk that's just a path of broken glass. It works just like a regular sidewalk, but I think walkers will appreciate it because it helps toughen up their feet. - vsaint, on 05/28/2009, -2/+26I've invented something in a similar vein. It's a segway, but instead of being powered by batteries, it harnesses the power of your self-esteem slipping away.
- vtnerd, on 05/28/2009, -1/+19A video would have been nice...
Still interesting though. - Kidsturk, on 05/28/2009, -3/+18How does the distance of the center of rotation change with respect to the ground, but the saddle (attached to the center of rotation) not oscillate?
- awtripp, on 05/28/2009, -1/+15chill man, just Reuleaux with it.
- ddrussianinja, on 05/28/2009, -1/+14Fred Flintstone would be proud.
- paddyosmith, on 05/28/2009, -2/+14well, there is an animation...
http://en.wikipedia.org/wiki/File:Rouleaux_triangl ... - Neph, on 05/28/2009, -1/+12Yeah, I'm not seeing the advantage. Why not just pedal faster? Or find a hill? Or deflate your tires? Or use a higher gear?
- inactive, on 05/28/2009, -2/+11Great for flat riding.......
I remember hitting 50 and 60MPH on some hills with my mountain bike.....I can't believe that this would work well at road speeds of over 35MPH.....brings to mind a bucking bronco! - AndrewRidgely, on 05/28/2009, -0/+8The trick is that the bike seat isn't fixed to the center of rotation. It's held up on top of the wheels, by those little bearing-filled platforms. You can see them in the later photos.
You can also see that he's got a little lever device for allowing the center of rotation to move with respect to the bike frame. It's clever. - robertc1964, on 05/28/2009, -0/+8Jeez, people, people.
The dude made triangular and pentangular bicycle wheels, and the rides "surprisingly smooth".
Who cares if the inventor's a bit deluded when it comes to practicality, or likelihood of use. Celebrate it for the whacky ass idea that it is. - commenter01, on 05/28/2009, -2/+9great idea, horribly written article.
- MothBoy, on 05/28/2009, -0/+7Here is a live video of a desktop model:
http://web.mat.bham.ac.uk/C.J.Sangwin/howroundcom/ ... - askantik, on 05/28/2009, -5/+11Thanks to the dude who gave a link to pictures... all that damned description about all sides being equidistant from the center and parallel lines and *****... and no pictures.
- richard67, on 05/28/2009, -1/+7"He believes that people will be drawn to the bike because it requires more work to cycle and therefore will provide more exercise for the cyclist than a conventional bike."
A few suggestions to provide even more exercise...
1. Fill the tires with lead, not air.
2. Making the tires square will require even more energy to pedal.
3. Change the gearing so that 100 revolutions of the crank turn the wheels around once.
4. Attach a tow hitch so that you can pull an optional 500 pound trailer.
I think with these changes will increase the amount of exercise required to ride it enough to justify putting it into production right away. - webcrumb, on 05/28/2009, -1/+7Or it could be that the website is running on a Sun server...
- LoudMusic, on 05/28/2009, -1/+7Mr Wizard did this with a board years ago - I remember being amazed as a pre-teen, but not having any real world application in mind. Probably the best (only?) is the Wankle rotary engine.
- webcrumb, on 05/28/2009, -1/+6Yeah, there she is (emphasis mine):
HTTP/1.0 200 OK
Content-Length: 53139
Content-Type: text/html
Last-Modified: Thu, 28 May 2009 09:06:06 GMT
Accept-Ranges: bytes
*******Server: Sun-ONE-Web-Server/6.1*******
Date: Thu, 28 May 2009 15:49:24 GMT
ETag: "cf93-4a1e53fe"
Vary: Accept-Encoding
Age: 5
Powered-By-ChinaCache: HIT from USA-LA-1-3DE
Connection: close
(found out after edit timeout, forgive me. :P) - ogarza, on 05/28/2009, -0/+5the bicycle doesn't rest on the fixed center of the wheels, it rests on top of the wheels.
this is obvious if the ride is smooth, it is nothing more than a series of cylinders that rest on the wheel. - taibo, on 05/28/2009, -0/+4Please, please please read the article before commenting next time.
- AgentMull, on 05/28/2009, -0/+4Ok, that is cooler than I initially thought. I missed the part that the bottom axle arm hinges, and the bike is actually supported by bearings on top.
- tamman2000, on 05/28/2009, -0/+4And you can't actually tell how it works until you see the pictures either...
They didn't even mention the fact that the bike is supported at the tops of the wheels in the article... - Hota, on 05/28/2009, -0/+4I finally get how it works...
The bicycle frame actually rests on the top of each wheel using rollers.
The front and rear wheels are both hinged on a pivot so the center of those wheels move up and down as you ride - but the top of each wheel stays at a constant distance to the ground.
As the seat is attached to the frame - it won't bob move up and down as you ride.
http://www.china.org.cn/china/photos/2009-05/07/co ... - jbcsee, on 05/28/2009, -0/+4Your missing the point that the wheel does not make the ride any more bumpy.
Thinking about this a triangle wheel might actually be better for mountain biking. How often have you spun out the rear tire trying to do a large step-up on rock? For me it happens a lot and sometimes when it does there are horrible consequences (right now I'm nursing a fairly bad cut on the back of my leg and quite a few bruises from a tumble down a ravine when my rear tire spun out). With one of those wheels the contact patch between the wheel and rock in my case is much larger therefore you would be less likely to lose traction and momentum (assuming your contact point with the rock was not one of the corners).
In any case this is one of the reasons for the 29er trend in mountain biking. Larger wheel means more of the tire in contact with the ground/obstacle at any given time. This means more traction. - jscanzoni, on 05/28/2009, -0/+4Are you just talking about the favicon? They're probably running Tomcat and just haven't changed the default favicon.
- evil-doer, on 05/28/2009, -1/+5exactly correct.
dunno why someone dugg you down. its sitting on top of the wheels, not based on the center of the wheels. - maeon3, on 05/28/2009, -0/+4The bike seat isn't joining to the wheel on the sprocket as in a normal bike, this bike's seat rests atop the sum of the distance between two unequal radii of an irregularly shaped rounded triangle.
Took me a few minutes to see it in my mind. - addakorn, on 05/28/2009, -0/+4I make my living doing #4.
- brodimus, on 05/28/2009, -0/+3Did it annoy anyone else that in both the article and the wikipedia entry it describes a 'rotating' rouleaux triangle as tracing out a square. That's incorrect. A rotating rouleaux triangle traces out a circle, a ROLLING rouleaux triangle traces out a square. Is that too pedantic of me?
- AndrewMoyer, on 05/28/2009, -1/+4Ahhh, that brings back fond memories of good ol' Spirograph.
- fendereff, on 05/28/2009, -0/+3Yes it would. Now if yo have an oscillating drill, it will make a rounded square like the answer says.
- AndySomnifac, on 05/28/2009, -1/+4Or he wanted to do this as an engineering exercise? What ever happened to "just because"?
- inactive, on 05/28/2009, -1/+4It would have been a pretty good idea if the article had included these pictures. i cannot even begin to imagine what the hell they wre thinking in writing this article without including pictures.
- roijen, on 05/28/2009, -2/+5Is there something wrong with seeing something simple and saying "you know what I can do that differently"?
Sigh... The nerds have left Digg - fendereff, on 05/28/2009, -2/+5The question at the end is stupid. The answer is wrong unless using an oscillating drill. Interesting idea but someone should have sent this to an editor before it got published.
- ogarza, on 05/28/2009, -0/+3the bike doesn't oscillate up and down, because the distance from the ground to the top of the wheels (where the bike rests) is constant throughout the revolutions.
on a normal, better bicycle, the frame rests on the center of the wheels - Leetamus, on 05/28/2009, -0/+3...or just buy your bike from WalMart
- stvanchimo, on 05/28/2009, -1/+3by what stretch of the imagination is this a great idea?
i agree, however, that this is indeed a horribly written article. - Leetamus, on 05/28/2009, -0/+2doesn't an 'ignorance' burn seem a bit overkill when discussing a ***** logo? ***** nerds my god
- inactive, on 05/28/2009, -0/+2He might sell a few to the circus.
http://pages.usiouxfalls.edu/maa/newsletters/Macal ...
new huffy
http://bighollywood.breitbart.com/files/2009/03/sq ... - GodsTwin, on 05/28/2009, -0/+2Maybe my rectangular unicycle will take off!
- SpoonMSU, on 05/28/2009, -1/+3WILLLLLMAAAAAA
- Engival, on 05/28/2009, -0/+2Amazing that people are digging you down.
Fendereff is right; You can't make a square cut if the center attachment is constant. It's the same reason the bike is resting on top of the wheels. With a centered attachment to those wheels, it would be a very interesting ride. - corripio, on 05/28/2009, -1/+3...or just shift into a harder gear
- subix, on 05/28/2009, -0/+2Looks like a rotor in a wankel engine
-
Show 51 - 100 of 121 discussions
© Digg Inc. 2009
— Content created and posted by Digg users is 
