Five emergency methods to deal with the broken transmission line of bicycle transmission system
How to deal with the broken shift cable
Although the probability of the transmission cable breaking is relatively small, it is of course inevitable that it will occur, so the emergency measures should be understood. When the front-drawn transmission cable is broken, the pulling force of the front-drawing will be lost, so the chain will fall on the innermost side. , That is, the chain will fall on the smallest plate.
As mentioned above, if the shift cable of the front pull is broken, the chain will fall to the smallest chain of the chainring. In this way, we can use the rear pull to adjust the speed ratio and continue riding forward, ignore it, the front Keep the minimum disk.
Furthermore, before riding, learn the relevant transmission adjustment methods. When the current shift cable is broken, you can use the lower limit screw of the front pull, which is to tighten the lower limit screw of the front pull, so that the front pull is located in the middle of the crank. Of course, the chain will fall on the middle disc at this time.
If you don’t know how to adjust the limit screw, then you can just remove the outer chain plate that was pulled out, just click and hang the chain on the largest plate of the chainring. This method is the least recommended, because of the large plate. However, many road conditions are not very suitable.
How to deal with the broken transmission cable after pulling out
After the back-pulling thread breaks, it is the same as the front-pulling situation. The front pull-out is used to change the speed ratio. The position after the different back-pulling thread breaks is different. , The position of the rear pull is at the position of the smallest flywheel, and the position of the chain can be moved to the smallest fly.
In the case of reverse pullback, on the contrary, due to the spring tension, the pullback position is located on the largest flywheel, so the position of the chain can be moved to the maximum flywheel at this time.
Also, if you have a screwdriver, adjust the lower limit screw with a screwdriver. If it is pulled backward, the position of the screw is generally the lower screw after pulling out. Tighten the lower limit screw until the chain can be Hang on a suitable gear.
Because the structure of different back pulls is different, the adjustment method is naturally different. If it is reverse pull, the position of the screw is generally the one with the higher end, so you must distinguish the structure of the back pull before proceeding. adjust.
Of course, when you travel, you still have to learn related bicycle knowledge. Only in this way can you better respond to emergencies and solve difficulties more quickly.
