There are two different types of dyno tests. We refer to them as:
Dyno load cell test:
where the load cell records the overall compression and rebound forces from the shock.
Pressure test:
Pressure sensors are added to the shock body recording pressures in the three chambers.
P.c . . . pressure in the compression chamber (comp).
P.r . . . pressure in the rebound chamber (reb).
P.ca . . pressure in the compression adjuster chamber (cadj).
P.gas . pressure in the reservoir, which is the same as P.ca, so we don't record P.gas.
If you run a test and it confirms your hypothesis, you have taken a measurement. But, if you run a test and it doesn't perform as expected, you have made a discovery.
Convert N to kg
In 2006 we acquired a dyno and started running tests.
The test results were not what we expected, so we decided to document these discoveries.
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From 2006 - 2013 we ran the dyno load cell tests.
Any documentation in that time frame is limited to our experience with load cell results.
From 2013 - present we run both dyno load cell and pressure tests.
Documentation from 2013-on is more precise and includes pressure test experience.
We had found that incorrect assumptions were made with the load cell tests because we didn't have a breakdown of the forces.
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Pressure testing breaks down the forces into their four main parts:
comp force from the main piston
cadj force from the cadj piston
gas force from the nitrogen charge
drag force from the shaft seal, bushing and piston band
