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Thru Axle Impales Cyclists Knee
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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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if this was a QR lever instead?

Dan Empfield
aka Slowman
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Re: Thru Axle Impales Cyclists Knee [Slowman] [ In reply to ]
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those pesky disc brakes again....

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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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BryanD wrote:
those pesky disc brakes again....

forgot and left my bike on the roof, drove into my garage. if it hadn't had disc brakes, would i have remembered it was up there? probly.

Dan Empfield
aka Slowman
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Re: Thru Axle Impales Cyclists Knee [Slowman] [ In reply to ]
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patiently waiting for the "THIS IS WHY WE DON'T NEED DISC BRAKES" comments! Let me go get some popcorn for us.

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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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So this could have happened with non-disc brake bike as well since it was the Lever.
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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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I knew those things were a bad idea the minute I laid eyes on them

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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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BryanD wrote:
those pesky disc brakes again....


...so the title was intentionally misleading?

How about:
Thru Axle Lever Impales Cyclists Knee
...or is that not trolly enough?
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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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Having not used thru axles myself, are the levers for those fundamentally different in shape from QR levers (especially for road applications)?

So as far as I know, QR levers have been in use for nearly(?) a hundred years.

So I am curious, anyone know of any case ever of this kind of accident ever happening with a traditional QR lever

Serious questions.

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Last edited by: DarkSpeedWorks: Jun 7, 19 10:10
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Re: Thru Axle Impales Cyclists Knee [dfroelich] [ In reply to ]
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oops

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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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I KNEW it. Disc brakes are EVIL! They should be BANNED. Off with the Engineers' Heads!
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Re: Thru Axle Impales Cyclists Knee [Tom_hampton] [ In reply to ]
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Silly engineers, rim brakes are your best friends!

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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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This incident is more an indictment of weight weenies that grind their lever down to pointy weapons than it is of disk brakes.

Citizen of the world, former drunkard. Resident Traumatic Brain Injury advocate.
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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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I can't see how a filed down thru axle lever is ever going to be more aero or lighter than the hex keyed thru axles that I use on all my evil disc brake bikes........

"When the going gets weird, the weird turn pro."
Hunter S. Thompson
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Re: Thru Axle Impales Cyclists Knee [Richard Blaine] [ In reply to ]
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Richard Blaine wrote:
This incident is more an indictment of weight weenies that grind their lever down to pointy weapons than it is of disk brakes.
It was a stock cannondale TA, who are the dumbasses who make the pointy levers

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Re: Thru Axle Impales Cyclists Knee [DarkSpeedWorks] [ In reply to ]
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DarkSpeedWorks wrote:
Having not used thru axles myself, are the levers for those fundamentally different in shape from QR levers (especially for road applications)?

So as far as I know, QR levers have been in use for nearly(?) a hundred years.

So I am curious, anyone know of any case ever of this kind of accident ever happening with a traditional QR lever

Serious questions.


Inevitably nu8st have.
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Re: Thru Axle Impales Cyclists Knee [BobAjobb] [ In reply to ]
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BobAjobb wrote:

Inevitably nu8st have.


Also chainrings injure people all the time (like Tom Dumoulin a couple weeks ago at the Giro).

People only go into hysterics if there's a Rotating Death Blade or Thru-Poleaxe involved.
Last edited by: trail: Jun 7, 19 11:47
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Re: Thru Axle Impales Cyclists Knee [trail] [ In reply to ]
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trail wrote:
BobAjobb wrote:

Inevitably nu8st have.


Also chainrings injure people all the time (like Tom Dumoulin a couple weeks ago at the Giro).

People only go into hysterics if there's a Rotating Death Blade or Thru-Poleaxe involved.

Only toothless chainrings, and blunt thru-axles (expoxied in place) are allowed in amatuer racing from now on. While we are at it, might as well get rid of spoked wheels, people get hurt with those things, too.
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Re: Thru Axle Impales Cyclists Knee [DarkSpeedWorks] [ In reply to ]
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The only difference is a thru axle is nothing more than a tightening device for the threaded end. It doesn't move in the Z direction like a QR Lever. It is fixed at 90 degrees to the axle shaft and can only rotate.

In this incident there would probably have been no difference between the 2 as long as both were shaped the same and pointing the same direction at the time of the impact, although the fact that the QR could move in a second direction gives the possibility that it would have moved before impaling the guys knee, but that is a pretty big leap to draw considering the physics in play.

"...the street finds its own uses for things"
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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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Pavement has been known to break collarbones, wrists, heads, knees, ankles, general body parts. Lets just stick to swimming.
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Re: Thru Axle Impales Cyclists Knee [axlsix3] [ In reply to ]
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100% of the people that swim will die...so water must kill people!
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Re: Thru Axle Impales Cyclists Knee [AutomaticJack] [ In reply to ]
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AutomaticJack wrote:
The only difference is a thru axle is nothing more than a tightening device for the threaded end. It doesn't move in the Z direction like a QR Lever. It is fixed at 90 degrees to the axle shaft and can only rotate.

Several thru-axles have the same cam mechanism as a standard QR.



"I'm thinking of a number between 1 and 10, and I don't know why!"
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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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Reading the story made my balls hurt.
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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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the thru axle lever is at a 90 degree angle to the axle so it does stick out more prominently compared to a quick release lever. I know on all of my QR levers I have them tucked in past a 90 degree angle and tucked in closer to the fork blade so they aren't sticking out at all.
So yes, doubtful this would have happened with a QR on the front wheel. Still a freak accident though.

Mike Plumb, TriPower MultiSports
Professional Running, Cycling and Multisport Coaching, F.I.S.T. Certified
http://www.tripower.org
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Re: Thru Axle Impales Cyclists Knee [BryanD] [ In reply to ]
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I happen to know the injured rider and he's taking it pretty well considering how scary it was. Lots of joking with his friends on Twitter.
Wasn't his bike that got him, but one he fell onto in the crash.
I think a traditional QR may have opened on impact. Part of the problem may be that the thru axle skewer is more rigid than a QR.
Any type of sharp skewer might have impaled someone
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