Tube Failure Caused Crash?
#26
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Join Date: Feb 2018
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Bikes: 2017 Specialized Allez Sprint Comp
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I believe that I applied the front break too hard and the flat remains a mystery. Because of neck pains I've ridden with my drop bars turned up for 30 years with no problems but my research has revealed the following post:
"In this scenario I assume the rider usually operates the brake levers with palms. A situation that calls for even just moderate application of the brakes (and/or grabby brakes) could cause the rider's weight to fall still harder onto the brake levers and result in a positive feedback loop that eliminates all possibility of any brake modulation. Worst-case scenario would be an endo. For the performance-minded there are many reasons not to turn up drop bars like this--not the least of which is the risk of un-weighting the front tire, but I think if levers can be installed in front of the handlebars to prevent the aforementioned feedback loop then for utility riding you might as well give this a shot."
So the cause is explained by physics. I will need to reposition my brakes keeping a handlebar height comfortable for my neck. May require new handlebars or a riser of some sort.
"In this scenario I assume the rider usually operates the brake levers with palms. A situation that calls for even just moderate application of the brakes (and/or grabby brakes) could cause the rider's weight to fall still harder onto the brake levers and result in a positive feedback loop that eliminates all possibility of any brake modulation. Worst-case scenario would be an endo. For the performance-minded there are many reasons not to turn up drop bars like this--not the least of which is the risk of un-weighting the front tire, but I think if levers can be installed in front of the handlebars to prevent the aforementioned feedback loop then for utility riding you might as well give this a shot."
So the cause is explained by physics. I will need to reposition my brakes keeping a handlebar height comfortable for my neck. May require new handlebars or a riser of some sort.
I agree that you should look into a riser of some sort. Something like this: https://www.performancebike.com/delt...d3318b/p335420
Flat riser bars that are cut down to road bike widths may also be appropriate, but you’d need a different brake/gear setup.