Ryders crash -motor?

[Granville57]

Is it not the changes in video speed added by the editing team. i.e. the clip slows down then speeds up again causing an illusion of the bike (back wheel) accelerating.

By watching Ryder's body movement, I don't see any evidence of that.

 

[D-Queued]

That bike looks like it has a mind of its own and Ryder is afraid to stop it. Good thing the moto ran it over.

The Moto may not be enough.

The thing needs an exorcist, or a wooden stake through the Di2 battery.

Dave.

 

[proffate]

A bike on a steep incline, cambered inwards has a large frictional force removed from it (Ryder dragging on the road) and it rolls down the camber?

also notice the bike is in a pretty weird position with the front wheel straight down on the tarmac. Nothing touching the ground but the front wheel, one brake lever and the rear wheel. It spins around like a compass due to gravity.

Or maybe it was a poltergeist.

 

[Don't be late Pedro]

Given the way the bikes moves would he not have needed to put the bike in reverse for a motorised bike to spin that way? I'm no physicist though...

 

[sniper]

it's not a steep incline, and it's not just the front wheel touching the ground.
let's not make up stuff.
waiting for twitter to pick this up.
this might be good.

 

[Bluenote]

His bike spins the wrong direction to be driven by a motor driving the bike forward.

Here, I did a little diagram over on RBR. Cheers.

http://forums.roadbikereview.com/do...nother-motorized-bike-331160-post4702780.html

At least I have the good sense to drink while on this thread.

 

[Almeisan]

Okay. Physicist here. Second 11 in the video, the bike has come to a near stop. Second 12 and the bike accelerates and rotates around an axis centered on the handlebars (touching the ground). This implies a torque (force parallel to the ground and some distance from the handlebars).

Sources of that force:

- Rotating front wheel? Nope. That wouldn't create any torque.

rofl where did you study.

This is what you literally see in this video. I don't even need to use my MSc from a top30 uni to know that.

A wheel touching the ground wouldn't pull a bike along? Sure.

Pretty easy to simulate this. Take a bike, spin the rear wheel. Then put the bike in the exact same position, then let go so the wheel can touch the ground. How will it move? Different from how we see it move in the video? So how will it differ?

Not to mention the wheel spins inward. He was motor breaking to recharge his battery?

 

[Bluenote]

Take a bike, spin the rear wheel. Then put the bike in the exact same position, then let go so the wheel can touch the ground.

If it spins, take a drink. If it doesn't spin, take a drink.

 

[Helvellyn]

Given the way the bikes moves would he not have needed to put the bike in reverse for a motorised bike to spin that way? I'm no physicist though...

Is this the new "my brakes were rubbing excuse" - "had my motor in reverse"?

 

[sniper]

Given the way the bikes moves would he not have needed to put the bike in reverse for a motorised bike to spin that way?

His bike spins the wrong direction to be driven by a motor driving the bike forward.

Not to mention the wheel spins inward. He was motor breaking to recharge his battery?

you guys gotta be kidding.
the rear wheel spins forward, as it would if it where motorized.
the whole point of a motorized rear wheel would be to make the bike go forward, right?

gravity could be an explanation but it doesn't look at all steep enough.

 

[Vino's Mum]

Watch his handlebars, in particular the left brake lever/hood.

As it touches the ground, one of the Dura Ace Di2 programmable buttons is activated, and as a result, the rear wheel turns.

It's not like it hasn't happened before - see Wiggins' Trentino bike throw from last year for perhaps the best example of this Park Assist function.

 

[jens_attacks]

could it have been the illuminati?!

i think i'm into something, guys

i found this on a very serious forums about illuminati:

"They wear dark or reflective sunglasses to hide their shifty eyes. And to prevent being hypnotized."

 

[simo1733]

could it have been the illuminati?!

i think i'm into something, guys

i found this on a very serious forums about illuminati:

"They wear dark or reflective sunglasses to hide their shifty eyes. And to prevent being hypnotized."

He still looks shifty though.

 

[Don't be late Pedro]

Here's some footage of Ryder from another angle and his onboard camera. I'm still undecided?

 

[hrotha]

The usual handful of people here crack me up.

 

[Piz Buin]

don't know what you're on about.

The rear wheel never stops spinning. The bike almost stops because he's still in his pedals . After he got out of his click-pedals the wheel catches ground again and thus moves.

 

[melkemugg]

The bike attacks

 

[Cycle Chic]

don't know what you're on about.

The rear wheel never stops spinning. The bike almost stops because he's still in his pedals . After he got out of his click-pedals the wheel catches ground again and thus moves.

So how come we,ve never seen this before on any other rider's bike ? lots of downhill crashes to see.

yeh totally normal for the rear wheel of a bike to propel itself in a 360.

 

[sniper]

don't know what you're on about.

The rear wheel never stops spinning. The bike almost stops because he's still in his pedals . After he got out of his click-pedals the wheel catches ground again and thus moves.

not sure.
when he falls there is no pedal movement so there should be as much spin on the front as on the back wheel.
yet, after the crash, only the back wheel is dragging/spinning, not the front wheel.
note also that when he falls his back wheel drags over the asphalt a few meters which would surely reduce any natural spin the wheel may have had.

 

[melkemugg]

So how come we,ve never seen this before on any other rider's bike ? lots of downhill crashes to see.

yeh totally normal for the rear wheel of a bike to propel itself in a 360.

Yes! This! I want to believe!

 

[sniper]

it just doesnt look like natural spin of the back wheel could have caused such movement.
if it were due to natural spin the movement wouldn't be so gradual, smooth almost.
and good luck explaining why the front wheel stops spinning and the back wheel doesn't.

 

[melkemugg]

good luck explaining why the front wheel stops spinning and the back wheel doesn't.

Im sorry for ruining your second comming but didnt you do this as a trick when you were kids? Spin the rear wheel (with your hand while lifting rear wheel) and then carefully-ish lay it to the ground and watch the bike go. Try it. Its not that hard. You can even try to get it going without a rider. With a stable bike it can go quite a while.

 

[oncehadhair]

No wonder moderators get poor press. Why aren't they stopping ridiculous threads like this instead of banning people for imagined transgressions.

 

[sniper]

Im sorry for ruining your second comming but didnt you do this as a trick when you were kids? Spin the rear wheel (with your hand while lifting rear wheel) and then carefully-ish lay it to the ground and watch the bike go. Try it. Its not that hard. You can even try to get it going without a rider. With a stable bike it can go quite a while.

i repeat (copy paste):
good luck explaining why the front wheel stops spinning and the back wheel doesn't.

 

[melkemugg]

i repeat (copy paste):
good luck explaining why the front wheel stops spinning and the back wheel doesn't.

seriously? They dont depend on each other. Its all about how the bike fall, its not common and sure its pretty ****ing random, but front wheel stopped when it hit ground but the rear wheel did not touch the ground before he tried catching it and off it went.