
The rear brake rocker arm shaft is rusted. Below is an introduction to the RA motorcycle brand: 1. Brand Origin: The brand comes from the UK's Royal-Alloy, which uses exquisite metal body craftsmanship to recreate the globally popular scooter models of the last century, successfully sparking a retro craze for scooters. While retaining classic elements, it enhances vehicle quality with better materials and advanced technology. 2. Positioning: The brand positions itself as a leader in retro scooters, with the 60s-70s MODS culture of the UK as the cornerstone of its brand spirit, gathering the most stylish and profound riders worldwide to create a unique RA era. 3. Selling Points: RA creates 'true classics' through fashionable design and outstanding performance, offering global riders a modern experience that is worth every penny. Classic models include the British retro scooter RA-GP200, among others.

I've encountered quite a few instances of sudden rear wheel lock-up during my years of motorcycle riding, and the causes are actually quite varied. The most common issue is chain-related problems—whether it's a loose chain, a broken one, or a rusted and seized chain due to lack of lubrication, all of these can prevent power from reaching the rear wheel. Another possibility is a stuck brake system, especially if the rear brake caliper gets stuck and doesn't retract, locking the wheel solidly. Additionally, a failed rear wheel bearing is another frequent occurrence, causing grinding noises or complete immobility, often due to long-term wear from rough riding. Rocks or debris lodged in the wheel can also lead to this problem. When I handle such situations, I first get off the bike and lift the rear wheel to see if it can be turned manually. If it's stuck, I check the chain's condition and clean the brake disc. Never force the ride—if the chain breaks at high speed, a crash could be disastrous. Regular maintenance is crucial; applying chain lubricant and periodically inspecting bearings can prevent a lot of trouble.

Once when I was riding off-road, the rear wheel suddenly stopped moving, which scared me into stopping immediately. It turned out the chain had fallen off because I had neglected maintenance and the chain was ridiculously loose. Chain issues are quite common on motorcycles; they can cause the rear wheel to stop turning due to stretching, rust, or breakage. A stuck rear brake is also annoying—like last time when mud got into the brake disc, and the caliper jammed the wheel, making it immovable. If the bearings are excessively worn, not only does it become harder to turn, but it might also produce strange noises. I suggest checking the chain tension and brake responsiveness before each ride—don’t wait until something goes wrong to regret it. Safety first! If the wheel stops moving, stop immediately and inspect. Simple fixes like adjusting chain tension with a wrench or clearing debris can be done yourself, but for more complex issues, it’s best to visit a repair shop.

A non-rotating motorcycle rear wheel is extremely dangerous and can cause instant loss of control while riding. I once witnessed a friend get injured from a fall caused by this, mostly due to a broken chain or stuck brakes locking the wheel. It's absolutely necessary to slow down immediately and pull over, then manually check if the wheel rotates. If there's an abnormality, inspect whether the chain is broken or needs cleaning, and if the brakes are stuck. If you can't fix it yourself, never force riding—calling a professional is the safest approach. This issue commonly occurs when debris gets lodged on dirty roads or due to improper maintenance. Regular inspections can prevent accidents.


