SECTION 03 - CHASSIS PREPARATION
MMC2005-001_03A.FM
03-19
As you can see, low speed dampening remains
the same until the shim stack bottoms out against
the valve stopper. Then the dampening becomes
significantly stiffer. This is sometimes referred to
as progressive dampening. Another similar way to
achieve this type of dampening is to use multiple
stacks of large and small shims.
1. Piston
The first stack of large shims will deflect very eas-
ily thus giving soft low speed dampening. The
number of small shims will determine when the
first stack hits the second stack of large shims.
Now both stacks are acting together thus stiffen-
ing the dampening. This can be repeated several
times until the complete stack of large shims bot-
toms out against the valve stopper.
As you can see, there are an unlimited number of
valving combinations and many different versions
will achieve very similar results. The following gen-
eral guidelines should help reduce your tuning time.
– If the dampening is close to what you want, just
add or remove 1 or 2 large shims, from the ap-
propriate side, to fine tune the overall stiffness.
NOTE:
Always use 30 mm diameter shims against
the piston for compression dampening and 26 mm
diameter shims against the piston for rebound
dampening. Excludes C-46 shock.
– Generally, rebound dampening should not be
changed unless a large change in spring rate is
made.
– Bleed slit quantity will affect low speed damp-
ening.
– Under dampening may be due to an aerated
shock due to low gas pressure and/or old, used
oil. Change the oil and recharge the gas pressure
to 300 PSI before altering the shock valving.
– If the vehicle bounces or
pogos
a lot, the prob-
lem may be too little compression dampening
NOT too little rebound dampening. Do not use
too much rebound dampening! Excessive re-
bound dampening is a common error. Over-
dampening will not allow the suspension to re-
cycle to full extension after an obstacle com-
presses the suspension. This situation (called
packing) will eventually bottom the suspension
and not allow it to cycle properly.
– For faster weight transfer under acceleration
and deceleration, use a piston with more bleed
slits.
Shock Oil and Nitrogen
A06F1TA
VALVE STOPPER
1
A06F0PC
413 711 806
32 oz
Содержание ski-doo MACH Z 1000 SDI
Страница 1: ...Mmc 2005 001 Racing FH8 Wed Sep 15 15 27 01 2004 Page 1 C M Y CM MY CY CMY K...
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Страница 196: ...05 72 MMC2005 001_05A FM SECTION 05 ENGINE PREPARATION FUEL TANK AND FUEL PUMP All Models except SDI 2 4 3 1 A33C2VS...
Страница 289: ...SECTION 06 DRIVE SYSTEM MMC2005 001_06A FM 06 27 422 A01D3JA 417 222 562 427 A01D3KA 417 222 677...
Страница 473: ...SECTION 12 SERVICE TOOLS MMC2005 001_12A FM 12 29 N Scratch remover P N 861 774 800 APPLICATION All models...
Страница 476: ...MMC2005 001_13A FM 13 1 SECTION 13 ACCESSORIES TABLE OF CONTENTS 0 ACCESSORIES 13 02...
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