Speed Runs - BOMBARDIER 1996 Ski-doo MX Z440 Handbook

Section COMPETITION PREPARATION
07

SPEED RUNS

Generally, a speed run sled will be set up very similar to an ice drag sled with
the following differences.
Some organizations do not allow lowering for stock class sleds. Check your rules. Shorter
springs may be an option to try.
Because holeshots are not important, engagement speed does not have to be set at
Top speed at the end of the course is the only concern.
bottom sprocket available. This will keep the belt low in the drive pulley which lowers the belt
and countershaft speed which makes the transmission more efficient.
As few studs as possible should be used. It takes energy to push a stud into the ice and pull it
back out again. Since holeshots are not important, use only enough studs to maintain control at
top speed.
Use standard trail carbide runners with the sharp edge worn down a bit. This way you will have
steering control without sacrificing speed.
Run with a very short limiter strap and soft center spring. This will reduce the track approach
angle which helps top speed.
For more speed run information contact Bill Rader by fax at (715) 847-6869, phone (715) 847-6884.
07-6
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RPM.
5000