Ryders crash -motor?

[Bontie]

I found this article, no news there, but the comments below was pretty interesting.

http://cyclingmagazine.ca/sections/...al-crashes-dash-stage-win-hopes-comes-runner/

Commentator notes: So when I saw the crash live something struck my eye as peculiar with Ryder's bike when it was on the deck just prior to the motorbike running over the back wheel...so I went back and watched it again in slow motion....
This is what I see...his bike is completely 100% stopped...no movement....somehow his bike begins moving in a semi-circle and accelerates in that motion until it is run over by the camera bike!!!!! What?? this is absolutely impossible without some sort of artificial propulsion!!!

Video here : http://www.steephill.tv/players/you...hboard=vuelta-a-espana&id=OBvgUBpJSkk&yr=2014

I am no physicist and have no idea about these things, but it does look odd, or am I being clinic cycnic?

 

[LaFlorecita]

Yeah..... that looks pretty strange, I must admit

 

[Cycle Chic]

now... where was that 'Motorised Bike' Thread !!!!

 

[veganrob]

That is bizarre.

 

[DFA123]

It looks to me like his leg swings the bike around when clipped in; then the momentum slows because he is still clipped in probably resisting it slightly, when he clips out it continues to swing around. There must be a lot of kinetic energy in a bike going to ground at 50km/h.

 

[bastigon]

His bike is just laying on the tires and its a downhill so it starts to roll. Looks strange but it really isn't.

 

[Cycle Chic]

no way - it spun a 360 !!

 

[jens_attacks]

and hesjedal is quick to stop it...."fucc you motor, you put me in trouble!now they will know"

 

[The Hitch]

lol, the video is funny when looked at in that context

 

[DominicDecoco]

Oh, dear.. How is this even a thread..

 

[Race Radio]

It is called inertia. Google it.......Or maybe it was the work of an evil genius?

https://vimeo.com/104632715

 

[Almeisan]

His front wheel touches the ground and is spinning.
I admit it, I missed it at first, only looking at the back wheel wondering if some funky conservation of angular momentum might be going on.
Because of the way his steerer is bent, the rear part drags around in a circle.

Why would he use a motor downhill anyway?

 

[Parker]

Conservation of angular momentum? Spinning wheels do strange things.
Still strange for that wheel to still be spinning.

Do you have a source for that? And don't cite 350 years of Newtonian physics at me. All opinions are valid and I think Cycle Chic's theories should be given as much consideration as the cornerstones of modern engineering.

 

[neineinei]

yup, he was using the motor downhill and then he was franticly trying to stop the bike so we wouldn't see, not because he wanted back on it or tried to save it from being run over by a proper motorbike. Too bad Garmin hadn't put a motor in his spare bike too.

 

[screaming fist]

Seriously, where do you people think the motor would be? In the hubs?

 

[Beech Mtn]

Watched the video. Don't see it. The bike is not still long enough to say that this is something weird, and not just inertia causing it to spin.

 

[Cycle Chic]

Watched the video. Don't see it. The bike is not still long enough to say that this is something weird, and not just inertia causing it to spin.

watch the video 3 or 4 times - he gets his foot out and then the bike recoils, spinning so much hesjedal cant even get hold of it.

 

[Fortyninefourteen]

It is called inertia. Google it.......Or maybe it was the work of an evil genius?

https://vimeo.com/104632715

He bought Cancellara's bike from 4 years ago on the recommendation of Davide Cassini.

 

[MonkeyFace]

It looks to me like his leg swings the bike around when clipped in; then the momentum slows because he is still clipped in probably resisting it slightly, when he clips out it continues to swing around. There must be a lot of kinetic energy in a bike going to ground at 50km/h.

That is nothing what a 30 mph crash looks like. I would guess maybe he was going 20 mph. Maybe less just based on how much he slid on the ground.

Before everyone scoffs, at the motor idea. It has been shown to be doable. The motor sits in the either front or seat tube and interacts with the crank internals. Lord knows how much benefit there would be to have a little motor reduce your work by 100 w.

 

[DFA123]

That is nothing what a 30 mph crash looks like. I would guess maybe he was going 20 mph. Maybe less just based on how much he slid on the ground.

Before everyone scoffs, at the motor idea. It has been shown to be doable. The motor sits in the either front or seat tube and interacts with the crank internals. Lord knows how much benefit there would be to have a little motor reduce your work by 100 w.

You know that video is in slow motion right? He wasn't even pedaling when he crashed; are you also suggesting that the crash turned the motor on?

 

[Almeisan]

Do you have a source for that? And don't cite 350 years of Newtonian physics at me. All opinions are valid and I think Cycle Chic's theories should be given as much consideration as the cornerstones of modern engineering.

I edited my post. But what does this even mean? Did you get an education? If not, there's no point.

 

[Almeisan]

watch the video 3 or 4 times - he gets his foot out and then the bike recoils, spinning so much hesjedal cant even get hold of it.

Watch the front wheel. It is pulling the rear along with it.

 

[MonkeyFace]

You know that video is in slow motion right? He wasn't even pedaling when he crashed; are you also suggesting that the crash turned the motor on?

I am not saying it is or isn't a motor. I would though bet my last dollar that someone in the peloton has already tried it. As much is spent on dope, why is a cheap bike modification such a stretch.

 

[Parker]

I edited my post. But what does this even mean? Did you get an education? If not, there's no point.

Do you know what sarcasm is? I was taking the p1ss - and not out of you. I was mimicking a Clinic style rejection of a simple explanation in favour of a complex conspiracy.

 

[DFA123]

I am not saying it is or isn't a motor. I would though bet my last dollar that someone in the peloton has already tried it. As much is spent on dope, why is a cheap bike modification such a stretch.

I agree that a motor has most probably been used in the peloton at some point. Just don't see it here though; the cranks aren't turning which what a crank/seat tube motor would cause, so it would have to be in the hub, which seems unlikely.