Can a punctured tire be repaired by injecting it with pitahaya nectar?
Hsieh Wen-yuan, a retired Central Police University instructor who is renowned in Taiwan for his ability to crack locks and prevent burglary, recently discovered that the common fruit known as pitahaya, or “dragon fruit,” naturally contains nectar that can be used to repair punctured tires. All you have to do is take the nectar extracted from the fruit and inject it into the tire where air is usually inserted, and the flesh and fiber of the fruit will automatically repair the punctured tire within a second of being punctured, allowing you to continue using the tire.
Hsieh used a nail to puncture a basketball, which caused it to start leaking air and making a hissing sound, but in less than two seconds the nectar he had previously put inside the ball filled the hole and the hissing ceased immediately. Aside from some red juice left on the surface of the ball, everything else about the ball appeared normal. The hole was no longer visible and the ball could be used normally. Hsieh also demonstrated how the nectar works on tires for motorcycles and bicycles.
Hsieh says that when he was driving to visit a friend in southern Taiwan three years ago, he had several jin (one jin equals 600g) of pitahaya in his trunk. When friction was created between the fruits as they rolled around when the car moved, the fruit produced a peculiar, highly adhesive fluid, which stuck to a basketball in his trunk. Eventually he and one of his friends began studying nectar extracted from the fruit.
According to his experiments, Hsieh says that the nectar works as long as the hole punctured is 0.6cm or smaller, but that he is still working on improving his formula for vehicles since the loads they bear can differ so much.
(Liberty Times, Translated by Kyle Jeffcoat)