The structural differences between Mono-tube and Twin-tube.
These are the Mono-tube and Twin-tube shock absorbers you often find in magazines etc.
For those of you who have ever thought to yourself, “I think I know the differences in the structure, but what exactly is the difference?” Here is the explanation.
The main difference between Mono-tube and Twin-tube systems, as shown above, is the number of tubes used for the shock absorber.
♦ Mono-tube: the shell case itself works as a cylinder and oil, gas, piston valve, etc are all set in a single tube.
♦ Twin-tube: there is a separate cylinder set inside the shell case and the piston valve moves up and down within the inner cylinder.
Other differences in construction.
Mono-tube uses a free piston that completely separates the oil chamber from the gas chamber. While for the Twin-tube, nothing separates the oil and gas chambers within the shell case. The differences between Mono-tube and Twin-tube shock absorbers, is not simply the number of tubes but also the inner mechanism as well.