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Rider launched, bike skyward, fork broken off, what happened?

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Rider launched, bike skyward, fork broken off, what happened?

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Old 01-06-15, 02:22 PM
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Originally Posted by Jeff Wills
Relevant frames are around 30-31 seconds in. Just before the launch, I see road debris.
It looked like a pretty big chunk of something in the road. I wouldn't blame it on the fork. It does make you wonder how mountain bikers are using CF forks off road in much tougher conditions without breaking.
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Old 01-06-15, 02:51 PM
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Originally Posted by jyl
Does anyone think a higher spoke count wheel makes this sort of thing less likely?
Well, if you had a front wheel disc, you might not be able to steer your bike, but this would not have happened

Again, this is a pretty freak accident, and really requires the front rider to knock the bar into the rear rider's spokes. If it was a single rider, then one might stick the bar into one's rear spokes, but not the front (in which case, a rear disc would help).

So, increasing the spoke count might increase the chance of excluding the bar, but might not prevent it (unless the bar was too big to enter).

Looking at the Breaking Away Movie, (which, of course, is fictional) I had thought it was a pump in the spokes, but it was actually a pump between the wheel and forks. And, a far less spectacular crash. Think of the possibilities of a 2015 remake. Anyway, perhaps the spoke count made a difference in how the scene was made.

But, there are several places where one can jam a stick where it isn't meant to go. I've heard that fenders can suck sticks into them.
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Old 01-06-15, 03:18 PM
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Originally Posted by LesterOfPuppets
Except out in these parts where it's only illegal in big cities.
I rode in the west before, on freeways, but the number of people who are in an area where it is legal to do so is a very small amount of all riders - therefore rare. I understand why they put the bike lane on the left to avoid ramp problems but it's still hazardous - obviously.
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Old 01-06-15, 03:25 PM
  #29  
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Originally Posted by cny-bikeman
I rode in the west before, on freeways, but the number of people who are in an area where it is legal to do so is a very small amount of all riders - therefore rare. I understand why they put the bike lane on the left to avoid ramp problems but it's still hazardous - obviously.
Legal just a couple miles north of my place, and plenty of people live out there by Salmon Creek. There are other reasons why not many people ride the freeway.
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Old 01-06-15, 03:29 PM
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Originally Posted by JohnDThompson
Only if you see the debris in time. If you're drafting closely, this may not be the case.
Gotta try to remember to look through the rider (s) ahead. I've been guilty of zoning out on the cassette head of me, or whatever, gotta look through, though.
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Old 01-06-15, 03:39 PM
  #31  
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Originally Posted by cs1
I wouldn't blame it on the fork. It does make you wonder how mountain bikers are using CF forks off road in much tougher conditions without breaking.
Sturdier construction, I suspect. Road forks and off-road forks have always had different design criteria.
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Old 01-06-15, 04:01 PM
  #32  
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Originally Posted by JohnDThompson
Sturdier construction, I suspect. Road forks and off-road forks have always had different design criteria.
This, but stuff jammed between the back of the fork and the spokes always causes an endo, and often a bent or broken fork on or off the road. Keep in mind that rigid carbon forks are relatively rare off road, so if we haven't heard anything it might simply be an odds thing because the base is so small.

The other difference is road bikers expect to stay up and every crash is an event in their lives. Mtn bikers OTOH realistically know that the odds of going down are high and aren't as likely to make a big deal of crashes. Or like a friend of mine, may be proud of their greatest hits, and like him, celebrate surviving major crashes.
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Old 01-06-15, 08:11 PM
  #33  
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Originally Posted by LesterOfPuppets
Legal just a couple miles north of my place, and plenty of people live out there by Salmon Creek. There are other reasons why not many people ride the freeway.
And Interstate 84 east of here. I've ridden I-84 from Multnomah Falls to Troutdale when I was too pooped to ride up the Historic Columbia Gorge Highway.
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Old 01-06-15, 08:49 PM
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Originally Posted by Doohickie
I'm not convinced the bar went through the spokes (as opposed to kicking up between the wheel and the downtube).


Don't ask how, but I hit pause at the right time.
It's looking like it did get between the spokes.
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