Shock Absorbers

ChrisOfBristol

New Member
Region
United Kingdom
This is not a specifically e-bike question, but I am considering moving my motor to this bike, so I hope it is permitted.
I need to buy a new shock absorber for my mountain bike. The current one (marked DNM torch) has snapped in half. First I need to understand a bit more about how they work. I understand the spring bit:). There is also damping, I'm guessing there is oil or air inside the cyclinder which is squeezed through a small hole. What I don't understand is the knob marked "R" at one end. I assume it stands for "Rebound damping" and adjusts the strength of the damping, but I can't see how it works. The shaft is hollow, is there an air valve in the end with the knob? Wouldn't that need a hole to the outside and wouldn't that get blocked with mud?
 

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