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Trek Front Disk Brake Recall

Old 04-22-15, 05:53 AM
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Trek Front Disk Brake Recall

I just saw this in the news:

Trek recalls nearly 1 million bikes for safety issue - Apr. 22, 2015

I am not researching this further, my bikes are all rim brake (except one is drum brake, front and rear), thus others should post more info when more is known.
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Old 04-22-15, 10:09 AM
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Trek is just playing it really safe in case some ignoramus doesn't properly use the front quick release skewer.
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Old 04-22-15, 11:09 AM
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As I understand the issue, if the QR lever isn't tight enough, it may open up and lodge in the front disc rotor, locking up the front wheel. The easiest solution is to put the QR lever on the non-disc side of the fork dropouts. I've always done it that way so as to make it easy to get to the lever and if the rotor is hot my fingers aren't near it when I flip the QR lever.

The replacement QR doesn't flip the normal 180*, it's closer to 90*, preventing the lever from lodging in the rotor.
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Old 04-22-15, 09:46 PM
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Originally Posted by Mr IGH
As I understand the issue, if the QR lever isn't tight enough, it may open up and lodge in the front disc rotor, locking up the front wheel. The easiest solution is to put the QR lever on the non-disc side of the fork dropouts. I've always done it that way so as to make it easy to get to the lever and if the rotor is hot my fingers aren't near it when I flip the QR lever.



The replacement QR doesn't flip the normal 180*, it's closer to 90*, preventing the lever from lodging in the rotor.
"Not tight enough" as in not closed whatsoever?
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Old 04-22-15, 10:17 PM
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Originally Posted by Tourist in MSN
I just saw this in the news:

Trek recalls nearly 1 million bikes for safety issue - Apr. 22, 2015

I am not researching this further, my bikes are all rim brake (except one is drum brake, front and rear), thus others should post more info when more is known.
you should research it further, not just read the headline.

nothing wrong with the bikes.
nothing wrong with the brakes.
nothing wrong with the skewers.
nothing wrong with....well....anything.

Nearly 1 million bikes recalled after rider paralyzed
Trek Recalls Bicycles Equipped with Front Disc Brakes to Replace Quick Release Lever Due to Crash Hazard | CPSC.gov

...........just some folks that left their skewers open.

"If the quick release is improperly adjusted or left open on a bicycle which also has a
front disc brake, the quick release lever can become caught in the front disc brake assembly"

the "new, improved" skewers won't flip open 180 degrees, they'll only go 90 degrees,
putting them in line with the rod.

not that it'll matter, since the fools who were leaving them open in the first place, will still
be leaving them open.

this will end up causing more accidents. why? because it will be less convenient to
spin the skewer tighter before closing, since the lever when open will be in line with the rod.
this means you'll have even more fools that flip the lever closed first, then spin the nut to
tighten it! now even more loose wheels!
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Old 04-23-15, 07:44 AM
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More here:

Trek recall of nearly 1 million bikes could spread to other manufacturers

Originally Posted by saddlesores
you should research it further, not just read the headline.
...
I read the short article, not just the headline. Sorry I did not meet your expectation for how I use my free time when I do not even use disc brakes.
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Old 04-23-15, 08:44 AM
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I really don't understand this recall. It seems like not having your QR skewers tight enough puts you at serious risk of crashing even if the lever doesn't lodge in the brake rotor. From, you know... the front wheel falling off.
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Old 04-23-15, 09:38 AM
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Saw this last night. I figured that there is probably less than a chance in a million of a properly tightened skewer having this happen to it.

I worked for a time at my city park, which has some good trails, with people coming from a two hundred mile or more radius to ride them. Saw a lot of user error, with the skewers being the most commonly misused, with people tightening them down while open. If I saw a couple heading out with their helmets on backwards, I usually didn't say anything, but if I saw a skewer being tightened wrong I did, because I really didn't want to have to deal with someone getting hurt in the park. Usually the person doing it was with a group that self monitored, but if I saw a family with walmart bikes show up I would take a saunter over and check. One time it was a couple in a really nice car with obviously new bikes(cannondales). It really sticks in my mind, the memory of two people wearing Rapha riding in circles in the parking lot trying to figure out how to clip in. The point of this is that not everyone is mechanically inclined enough to realize how the cam skewer works, and no one has ever shown them.

This is pretty much the reason that I may piss and moan about layer lips when I have to deal with them(not that its a big hassle)but don't want them to go away. This disk brake problem aside, they have probably saved a lot of teeth.

I once actually had a front skewer break on me while descending over wet roots into a sharp left turn at some old strip pit mines I rode at in Pittsburg KS. Lucky for me there was a filthy muddy body of water to land in. I may have actually over tightened the skewer over a period of time, which is another form of user error(actually I dont know that, but its possible).

Last edited by shipwreck; 04-23-15 at 09:45 AM.
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Old 04-23-15, 09:47 AM
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The lower casting of suspension forks already went for a deeper lawyer's Lip cavity as it is.
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Old 04-23-15, 10:08 AM
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Originally Posted by stevepusser
"Not tight enough" as in not closed whatsoever?
The problem can occur when the QR isn't correctly loaded up with tension, hence the term "not tight enough". The skewer can be closed, not tight enough (not properly loaded) and open up when hitting a road/trail obstacle. If the skewer's lever is on the disc side, and able to pivot more than 180* (as is the case with open lever skewers), the QR lever could pivot into the rotor, lock up the front wheel and cause a crash.

Hope that helps your understanding of the issue!
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Old 04-23-15, 10:44 AM
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Are we 9 posts into a thread that mentions disc brakes, and still nobody is threatening anyone, name-calling, or concocting an elaborate conspiracy theory? This has got to be a record.
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Old 04-23-15, 10:47 AM
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It's touring ... Not P&R..
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Old 04-23-15, 02:05 PM
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Originally Posted by fietsbob
It's touring ... Not P&R..
? Pastrami and Rye?
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Old 04-23-15, 02:26 PM
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https://www.bikeforums.net/politics-religion/
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Old 04-23-15, 08:56 PM
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Originally Posted by alathIN
Are we 9 posts into a thread that mentions disc brakes, and still nobody is threatening anyone, name-calling, or concocting an elaborate conspiracy theory? This has got to be a record.
I will punch you, you ignoramus, Trek is run by a secret cabal of flying nuns with squid like tentacles for feet and they build bikes out of radios...yabbleblabbleooogaadooga

Ok I will admit it wasn't an elaborate conspiracy theory but I should at least get points for showing up!

(if you could not tell I was kidding except for the Trek part ; )

People really need to not buy bikes with QRs or disc brakes if they cannot use them properly. They should recall all toasters because someone might get burnt toast...oy vey.
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Old 04-23-15, 09:02 PM
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Originally Posted by Mr IGH
As I understand the issue, if the QR lever isn't tight enough, it may open up and lodge in the front disc rotor, locking up the front wheel. The easiest solution is to put the QR lever on the non-disc side of the fork dropouts. I've always done it that way so as to make it easy to get to the lever and if the rotor is hot my fingers aren't near it when I flip the QR lever.

The replacement QR doesn't flip the normal 180*, it's closer to 90*, preventing the lever from lodging in the rotor.
It's not an issue of it being tight enough; rather, it's an issue of the lever not being used properly (i.e. simply screwed down tight instead of using the cam lever to close it correctly) and thus having the potential to become lodged into a disc rotor and cause a wreck. Trek is stepping up with some far-reaching preemptive damage control with skewer replacement and education on proper QR use, hopefully avoiding any future related injuries.

Edit: Ah, I just saw your other post, so yeah...you get it.
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