Why does my bike back wheel lock up?
Sounds like you may have a bad set of bearings. You will need to: remove the rear wheel from the bike by loosening the axel nuts and the coaster brake. then remove the axel from the wheel, there should be a retainer clip that can be removes from a groove in the axel, once removed, the axel should slide out.
Should bike pedals move when walking?
The pedals of the bicycle are spinning when pushing/walking the bike even though there’s a cassette freehub or a freewheel that’s supposed to be in coast mode. This phenomenon is commonly known as “ghost pedaling“.
What is coaster brake?
Coaster brakes, also known as back-pedal brakes or foot brakes, are the standard brake system found on most kids bikes. They are simple in design and require essentially zero maintenance, which makes them appealing to many bike owners. Just pedal backwards and engage the brake.
When should I replace my bike crank?
After 5,400 miles it is reasonable to replace the rear cassette and chain. The front chainrings may need replacing if they have been ridden with a wornout chain. The rest of the crank: the spindle cranks and spider should be fine. Sometimes it is cheaper to replace the whole crankset.
Why can’t I pedal backwards?
There is no sprocket nor any chain attached to the front wheel. That means there is no mechanism to convert the rotary energy given to the paddles to convert it to the motion of the wheels. Thus we can’t move backwards when we move the paddles in reverse direction.
Why does my bike chain comes off when I pedal backwards?
If it has a derailleur your gears need adjusting. We properly adjusted shifting system will allow you to pedal backwards without the chain coming off. Something could be bent, like the derailleur hanger or the derailleur itself. If it’s a singlespeed, this means the chain is out of alignment with the two sprockets.
What is the difference between a freewheel and a cassette?
To identify which type you have on your bike you will need to start by removing the rear wheel from the bike. Then spin the cogs backwards by hand, if everything apart from the axle moves, then it is a cassette. If part of the block is stationary when the cogs move, then it is a freewheel.
What are pawls on a bike?
The pawls (of which there are usually three or six positioned) are spread evenly through the hub’s 360 degrees. They are positioned at an angle, on a pivot, with teeth at the exterior end. Each pawl is supported by a leaf spring which pushes it outward, forcing it to mesh with the drive ring.