Australasian Dirt Bike — June 2017

linear windings and adding more
preloadwillnotchangetherateof
thespring.Whatitdoesdo,ischange
the amount of initial force it will take
to get the spring moving. Take a
5.0kg/mm spring for example. This
spring will require 5kg to compress it
each millimetre. So at full length
(fTHE ree length), this spring will
require 5kg to get it to start moving.
Butifweadd5mmofpreloadtothe
spring, then it will require 25kg to get
it to start moving. So the more

preload we add to a spring, the more

load it will take to get the spring to

start moving. By adjusting the

preload we are able to adjust the

height at which the front and rear of

the bike sits. This is how we change

thecharacteristicsofthebike.A

spring with more preload adds more

tension to the shock or fork, causing

the bike to sit higher in the stroke.

Suspension is a very dark art. I

hope this helps.

Technical Editor Mat Boyd

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