BRP ski-doo MACH Z 1000 SDI, Руководство пользователя

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11-6
MMC2005-001_11A.FM
SECTION 11 - COMPETITION PREPARATION
Traction
• Most rules limit maximum stud height to 3/8”
over the tallest part of the track. Track cutting is
illegal. A camoplast oval track is available (P/N
700 9844), it has 19 mm (3/4 in) lug height and
tall guide clips for oval racing.
• Use a thin profile, sharp tipped stud for hard ice
conditions. If the track conditions get sloppy,
exchange some picks for a chisel or wedge type
stud.
• Seven picks per bar for a total of 336 studs will
be required for all sleds up to about 100 HP. Big-
ger sleds may require more picks and/or hooker
plates.
• Use 51 mm (2 in), 2 hole angled aluminum back-
er plates for the majority of your pattern, espe-
cially on the outside belts. The right hand belt
will need a 51 mm (2 in) plate on every pitch. Fill
in the pattern with 25 mm (1 in) square backer
plates. The pattern should not repeat itself for
at least 5 pitches.
• Use a good quality square bar carbide runner
with 254 mm (10 in) of carbide for starters. As
you gain experience, try 356 mm (14 in) of car-
bide for more front end bite.
• Studs and carbides need to be SHARP! The car-
bide must shave your fingernail when scraped
across and studs must prick your finger.
Controls
• You will probably be more comfortable in the
corners if you make a curved extension for the
left side of the handlebars. Many drivers make
a new set of bars from the same size tubing and
custom bend it to fit their preference. (Check
your rule book for requirements on handlebars).
• You may also want to fabricate a stirrup for your
right foot.
Transmission
• You need aggressive shifting to get a good hole-
shot but you also need good backshifting. Here
again, testing is the key to success.
• Use the lowest TRA setting that still allows you
to maintain correct RPM when exiting the cor-
ners.
• Gear for the speed you will go on the course.
• Break in several belts of the same type and size
and set up your pulleys to work with these
belts.
• Maintain your clutches on a weekly basis. A
clean, free moving driven pulley is important to
good backshifting. Clean the pulley faces with
acetone on a regular basis.
Physical Conditioning
• While a well set up sled will be easier to drive
than a poor one, it still takes good arm strength
to turn a stocker with aggressive carbide. Train
your upper body for strength and endurance. A
good overall conditioning program that also
works your legs and respiratory system is a
smart idea. While it may not seem like 3 lap
heats are very long, 10 lap finals on a short track
with tight corners can really wear you down.
RACE CIRCUITS
Remember it is the driver and team's responsibil-
ity to have the sled race-ready in accordance with
the rules of the circuit you race in. All races ap-
proved for Ski-Doo's Winners Circle contingency
awards are governed by the general rules laid out
in the ISR annual handbook. It is common practice
for the various race associations across North
America to modify the ISR rules for local use. This
does result in conflicting standards and therefore
every driver must carefully check the rules.
Contact the following circuits for detailed race
rules.