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I've just survived a bicycle crash

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I've just survived a bicycle crash

Old 12-19-19, 12:51 PM
  #26  
canklecat
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Originally Posted by MikeyMK View Post
This reminds me of the safety issue with cantilever brakes, which were particularly popular on mountain bikes and touring bikes of the 1980s.

The reflector bracket acted as a catch arm, but many people either took them off or left them off when they came loose - this left a potential time bomb in place; if the main brake cable snapped, the short relay cable joining the brake cantilevers dropped onto the tyre, stopping the wheel dead.

Anyone using cantilever brakes must ensure there are catch arms mounted, such as the stock reflector brackets.

Here's an example of someone who's fate lies with a crushed cable and an M6 nut. If that fails, brake failure will be the least of the rider's problems - and fast.


Same. When I bought my used '93 Univega the reflector mount/cable catchers had been removed. I considered replacing 'em, but I switched to all purpose tires with minimal file tread so there's less risk in the unlikely event of a canti brake cable snapping and turning the straddle cable into a tripwire. And while I've heard of several catastrophic crashes caused by front fender struts breaking, or sticks getting jammed in the front wheel, I don't recall ever hearing of an endo caused by a straddle cable snagging a heavily treaded front tire.

Yet.

Cross wood, knock fingers, etc.
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Old 12-19-19, 12:56 PM
  #27  
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Originally Posted by livedarklions View Post
What the hell would you have to do to a bike to get the front brake cable to snap? Use catgut?
Yup, another reason I decided not to worry about it. The canti brakes from that era were fitted with massively strong cables. A rider would need to ignore fraying and broken strands for a long time for it to be dangerous. A more likely -- and still improbable -- scenario would be a loose clamping bolt at the straddle cable hanger.

But as a former safety and health inspector I had worst-case-scenario drilled into my head by instructors, so I still consider those risks with everything in life. When one has seen enough mangled bodies and deaths caused by confluences of seemingly improbable events, omissions and negligence, it kinda changes ones perspective in favor of caution.
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Old 12-19-19, 03:38 PM
  #28  
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Originally Posted by HarborBandS View Post
Yep. The later versions of cantilever brakes (Shimano 1990's) had a splitter with only one cantilever side hooked up to the smaller cable. Then the main cable continued through the splitter sleeve, and down to the other side of the brake cantilever. So if either cable snapped, only a loose piece would fall on to the tire. It was highly unlikely to cause a crash.
+1 I think Shimano calls those "link wires."
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Old 12-19-19, 04:49 PM
  #29  
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Originally Posted by rumrunn6 View Post
he'd be safer with a fender to catch that cable
A fender/mudguard will also catch it, yes.
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