I was looking on my phone and didn't actually see the one by the doctor. Was it there?
I think it's the 10th on the right.
Velocipedia
81–90 of 110 posts
Re: Velocipedia
#82This is exactly the same as in a Brain Games episode where the host had some college students draw a bike, only one got it right. http://natgeotv.com/ca/brain-games/about
Re: Velocipedia
#83This is exactly the same as in a Brain Games episode where the host had some college students draw a bike, only one got it right. http://natgeotv.com/ca/brain-games/about
[deleted]
Re: Velocipedia
#84The first bike is missing its chain stays, the bars connecting the bottom bracket to the rear axle and the ends of the seat stays. Wikipedia has a nice diagram with the names of all the parts of a bicycle [1]. There are real bike designs that have a monofork (a one-sided fork, e.g. the Cannondale "lefty"), a monostay, or a solid body instead of top & down tubes (e.g. many folding bikes or the extremely aero Ventum On…
What is the purpose? To reduce torsion of the rear axle?
Re: Velocipedia
#85The first bike is missing its chain stays, the bars connecting the bottom bracket to the rear axle and the ends of the seat stays. Wikipedia has a nice diagram with the names of all the parts of a bicycle [1]. There are real bike designs that have a monofork (a one-sided fork, e.g. the Cannondale "lefty"), a monostay, or a solid body instead of top & down tubes (e.g. many folding bikes or the extremely aero Ventum On…
What is the purpose? To reduce torsion of the rear axle?
To form the triangle that locates the rear axle. Without it, the seat stays (?) would flex and break.
Most bicycle frames are two triangles sharing the seat tube, making it strong and rigid.
Re: Velocipedia
#86Earlier quoted context omitted.
Just to expand on what others said, the tubes that the frame is missing are called chainstays.
Is it really impossible to build such a bike? Given a strong enough material it would be possible. I have not idea about the structural analysis in this case. Does such a material exist?
In practice, bikes that diverge from 2 triangles eschew the support between the rear hub and the seat:
https://www.google.com/search?q=carbon+fiber+bike+frame
(the results are mostly traditional, there are some with a different configuration for the frame supporting the rear hub)
Re: Velocipedia
#87The first bike is missing its chain stays, the bars connecting the bottom bracket to the rear axle and the ends of the seat stays. Wikipedia has a nice diagram with the names of all the parts of a bicycle [1]. There are real bike designs that have a monofork (a one-sided fork, e.g. the Cannondale "lefty"), a monostay, or a solid body instead of top & down tubes (e.g. many folding bikes or the extremely aero Ventum On…
the first thing i noticed wrong with the first bike was 'oh my god that's a terrible placement for brake levers!' and only after I noticed the missing chain stays haha.
Re: Velocipedia
#88Earlier quoted context omitted.
That's not very wrong, it's just missing things (rear triangle, drivetrain). At least you could ride downhill on it (though stopping may be an issue).
I would say it's one of few that could not break as soon you get on :) It really looks like as a history bicycle, where you used foots to push. http://i.livescience.com/images/i/000/064/812/iFF/hobby-hors...
Also known as a "Velocipede".
Re: Velocipedia
#89Earlier quoted context omitted.
I would draw it facing left and I think that's because of the way I learned to mount a bike: the bike-stand is on the left side so you need to have your last foot on the ground on the left side in order to pull it up.
> the bike-stand is on the left side Obviously that's just if the bike is positioned facing left. Nothing inherent about it, you could just as well mount a bike facing right, and it would be on the other side.
A bike stand is only attached to one side of the bike. So it's always on either the left or the right, no matter which direction the bike is facing.
Re: Velocipedia
#90Earlier quoted context omitted.
> the bike-stand is on the left side Obviously that's just if the bike is positioned facing left. Nothing inherent about it, you could just as well mount a bike facing right, and it would be on the other side.
A bike stand is only attached to one side of the bike. So it's always on either the left or the right, no matter which direction the bike is facing.
That's compared to the bike -- I meant compared to the road.
Compared to the bike yes, the stand is on a specific side (e.g. left) -- but how/why would that affect whether you draw the bike facing to the right or left?