crazy old man · βίντεο

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Sinomar Godois Tavares abandons his DIY puncture-protection method for bicycle tires after repeated failures on the rear wheel.0:08 His initial design, which utilized EVA foam and PET plastic strips, caused three separate punctures by shifting and cutting into the inner tube under load.0:27 The heavy weight of his touring setup, including a dog trailer and camping gear, creates excessive pressure that causes the PET strips to break at the seams and migrate inside the tire casing.0:34 Despite attempting to reinforce the seams with silver tape and overlapping the plastic, the internal structure loses its shape and integrity during use.8:49 He concludes that the DIY PET liner is unviable for long-distance touring and warns that the method causes more flats than it prevents.9:43 He plans to test a new configuration by inserting a cut-up inner tube inside another, a technique used by cyclists in the Caatinga region to protect against thorns.4:53

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