What is the reason why the rear brake of a scooter cannot hold?
2 Answers
If it is a drum brake, it may be due to excessive wear of the brake drum or insufficient contact area between the new brake shoe and the brake drum. In this case, the brake shoe needs to be scraped and filed to remove the excess protruding parts in the middle, similar to the process of fitting new shoes to drums in large vehicles, to maximize the contact area between the brake shoe and the drum. Below is some relevant information: 1. Brakes: Brakes are mechanical devices used to slow down or stop a vehicle, also known as decelerators. Scooters generally use drum brakes, which are crucial and must be kept in good condition. 2. Types of brakes: Manual car brakes are located next to the gear shift and are connected to the brake lever. Common types also include bicycle brakes, which rely on rod-shaped brakes fixed to the frame or disc brakes to slow down the vehicle.
In my years of repairing vehicles, scooter rear brake failures are incredibly common. First, check the brake pads—if they're worn flat, it's time to replace them; without friction, they obviously won't stop the bike. Second, the issue could be with the brake cable—over time, the inner wire can seize up, making it very hard to squeeze, or even impossible to pull. Third, water or oil getting into the brake drum is another culprit, especially after rainy days—you'll need to disassemble and dry it out. There’s also an adjustment screw near the rear wheel that’s crucial—if it’s loose, it increases the brake travel, making the brake feel spongy. It’s best to check your bike’s condition every month, especially wear-prone parts like the brake cable. I’ve seen too many people wait until the brakes completely fail before coming in for repairs—that’s way too dangerous.
