There is often a lot of confusion around tender springs and helper springs and the two are often mistaken for one another. Although they have a similar appearance and sit in the same place as each other they do in fact do very different jobs.
How to Measure The most accurate way to measure a damper is to use a damper dyno. This is a machine that fixes one end to a load cell (force measurer) and the other end to a crank shaft. The crank shaft has a fixed displacement and rotates in a