Firstly, know your fork! It is vitally important you know what model you have so you can correctly understand the performance features of it. Please refer to your owners manual or download one via
www.marzocchi.com
When setting up the fork always work in the following order:
1/ Spring rate, this could be via Air pressure or a mechanical spring
2/ Sag
3/ Rebound
4/ Compression
The following is intended to give you an idea on each function but does not specifically refer to any specific model.
Springs: Coil
The spring rate of a coil spring refers to the amount of force needed to
compress the springs in the fork. Marzocchi offers several different spring
kits to coordinate rider weight and riding conditions.
Spring Preload
Spring preload can be done with the external adjusters on
top of the fork. Preloading the springs will compress them slightly and
increase the initial force needed to compress the spring. Marzocchi forks can use
the maximum amount of preload from the adjuster and the fork will still get
full travel. Spring preload is used to fine-tune the spring rate to adjust for
the proper sag measurement. Minimal spring preload is recommended for better
performance and longer working life of the springs, so it is better to change
to a stiffer spring rate than to add significant preload (10+ turns.)
Springs: Air
Air spring rate is the amount of air pressure that is in the
fork. Air pressure can be infinitely adjusted using a shock pump to fit
rider preference. Be sure to use a shock pump that can accurately gauge air pressure
in the adjustment range.
Sag
Sag refers to how much the fork compresses when the rider is in the normal riding position. Marzocchi recommends between 10-20% for XC and up to 35% for DH/ Enduro to provide the best overall ride. The easiest way to measure sag is to put a zip tie around the stanchion and then measure how much the fork compresses when the rider is in the normal riding position. Keep in mind that the normal riding position on a DH bike may not be correct on level ground.
Damping: Rebound
Rebound damping controls the rate in which the fork is able
to extend. All of the Marzocchi forks have adjustable rebound damping. Rebound
damping should be set fairly fast, but without causing a sudden, harsh force
back to the rider. This will allow the fork to comfortably extend to full
travel as soon as possible after impact.
TIP: It is a good idea to get a feel for how the different
rebound adjustments affect the fork. Try
turning the adjuster all the way counter-clockwise to the fastest rebound
setting and then quickly compress and release the suspension several times.
Next test the fork with the adjuster turned all the way clockwise and then
somewhere in between, this will demonstrate the differences between damping
settings.
Damping: Compression
Compression damping is the oil flow resistance felt when
compressing the fork. Compression damping is categorised in two ways: low speed
compression and high-speed compression. Low speed compression refers to when
the fork is compressed slowly and gradually, for example during rolling impacts
and rounded bumps. High-speed compression refers to the resistance felt during
multiple, hard impacts and square-edged bumps.
It is better to be conservative while setting the
compression damping because the spring offers resistance to compression as
well. Too much compression damping creates a harsh ride because the suspension
cannot compress rapidly enough to absorb large impacts. Compression damping is
not a substitute for proper spring rate and should not be adjusted until the
fork has the proper spring set-up for the rider.
Testing, testing, testing
Find a quick loop with multiple trail features such as drops, roots and rollers, but it is important that it is repeatable. Repeat the loop and experiment with the settings paying attention to how the bike feel is changing on each loop. Make sure you have a shock pump with you and don't be afraid to change the settings, your bike will feel different on the trail to what it did in the car park.
Trouble shooting
The following chart will help pinpoint any problems that may
occur while setting up your Marzocchi suspension fork. Keep in mind that some
problems may be due to one or more cause and that setup should be done in the
order as it appears in this book.
