This is one of the reasons speed wobbles are much more likely on a road bike than a mountain bike.
Mountain bike rear sprocket wobble.
The bike is a giant seek 2.
Could this even be normal.
According to bike expert sheldon brown the rear derailleur features a tension pulley that keeps the chain tight while it moves between the various cogs of the rear cassette.
Is it normal for the rear cassette to wobble on a mountain bike.
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The rear cassette is a set of concentric gear rings attached to your back wheel.
Is it normal for the rear cassette to wobble on a mountain bike.
Each ring is a gear on your bike and the chain which connects to the pedals turns the cassette to power the bike.
You can also move your rear wheel to adjust chain tension.
Check for flat spot wobbles or a bike that is not radially true.
Over time the teeth on the gears start.
The most common issue is when the rim wobbles left to right but bike tires can also wobble up and down as well forming egg shaped wheels or small flat spots where the tension isn t quite right up and down.
In bikes speed wobble starts when something causes the front wheel to accelerate to one side.