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Welcome back to Summit Racing Quick Flicks I'm Al. Today we are going to talk about shocks
specifically, twin tube design versus mono tube design.
On the outward appearance it's difficult to tell the difference between a mono tube and
twin tube shock design but on the inside you are going to be able to tell that they are
quite different. Take a mono tube design for example. It's a single cylinder that is filled
with a fluid that the piston moves up and down in the fluid and on the end is a gas
filled chamber that absorbs the shock of the fluid as the piston moves up and down. In
a twin tube design there is two tubes and the piston moves up and down in the fluid
in the inner chamber and the outer chamber acts as a reservoir to again absorb the shock
of the fluid as the piston moves up and down. So what are the pros and cons of these two
different designs? Well in a twin tube design, it's a low pressure dampening system which
tends to lead towards a softer rid, now because its low pressure under a heavy cornering you
may get some unwanted body roll and because the fluid and the gas are not kept separate,
under frequent cycling of your suspension, the two may combine and your going to get
cavitation which means the fluid is no longer going to support the piston as it moves up
and down. And the twin tube shock design has to be mounted in the up right position. In
comparison, the mono tube shock design, it can be mounted in any direction and because
the fluid and the gas are kept separate, there is less of a chance of cavitation. The mono
tube shock design is more of a high pressure dampening system so you are going to get a
little more of a firmer ride and the valving in this shocks tends to be a little bit more
consistent. So I would love to hear what type of shocks you prefer on your ride. Remember
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