BRP ski-doo MACH Z 1000 SDI, Руководство пользователя

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SECTION 03 - CHASSIS PREPARATION
MMC2005-001_03A.FM
03-5
Dual Rate Spring Formula
A Dual Rate Spring will assume the rate of the
heavier rate spring when the lighter spring bot-
toms or coil binds.
Example:
Spring 1 100# Rate
Spring 2 150# Rate
Spring 1 was a 100# Rate separately, but when
stacked on the 150# spring (spring 2), it now has
a 60# rate. As the spring bottoms or coil binds, it
will assume the 150# rate of spring 2.
Torsional Springs
A torsional spring acts just like a coil spring but it
is shaped differently. It is much more difficult to
measure the rate of a torsional spring because of
the lengths of the legs and where the load will be
applied. The rear torsional springs on the S chassis
are rated in lb-ft/degree (pounds-feet per degree
of rotation). Suffice it to say that there are stiffer
and softer springs for most applications.
The preload on a torsional spring is controlled by
the free opening angle and the installed opening
angle. If a torsional spring must be
twisted more
to be installed, then it will have more preload (fol-
lowing illustration).
Spring Identification
Our springs will have one, 2 or 3 stripes of color
painted on the spring. This is the color code used
for identification. Refer to the applicable chart to
find a cross reference between the part number,
model application, color code, spring rate, free
length and spring type. The spring type denotes
physical characteristics of the spring like the inside
diameter of the ends which will determine the
type of retainer used to hold the spring. All spring
types are not interchangeable.
CHECK THE SPRING TYPE AND FIT OF THE
SPRING RETAINER BEFORE INSTALLING DIF-
FERENT SPRINGS!
Spring 1 Spring 2
×
Spring 1 Spring 2 +
---------------------------------------------------
100 150
×
100 150 +
---------------------------
1500
250
------------- 60 = =
A01F25A
Free opening angle
Load Load
Installed opening angle