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SKI-DOO DRIVETRAIN
The Ski-Doo drivetrain
is a highly efficient system transmitting engine power to the
track. Once the first clutch engages, the system becomes a completely
automatic transmission, seeking the most efficient setting possible
at the engine's output level.
T.R.A. (Total
Range Adjustable) and Cushion Drive T.R.A. clutch
The T.R.A. clutch
is the key drive clutch of the Ski-Doo driveline. It uses centrifugal
force to transfer engine power to the transmission system, as
well as control that power and keep the engine from overrevving
at top speeds. Riders can adjust their top engine operating speed
in 200 rpm increments without disassembly. The T.R.A. Cushion
Drive clutch has additional rubber bushings to minimize engine
vibration and maintain smooth engagement. Some high performance
sleds have windage plates, lightweight flat disks affixed to
the outside of the clutch, to eliminate air resistance to the
clutch's spinning.
Bombardier
Lite clutch
The Bombardier
Lite is a lightweight and economical drive clutch that works
on the same centrifugal force principles as the T.R.A. clutch.
It offers unparalleled reliability and simplicity.
Bombardier
Hydraulic Disc Brake
This brake system
provides one-finger stopping power with a smooth, progressive
feel by pumping a fluid into two pistons on both sides of a disc
connected to the driveline. Bombardier engineers combat the high
temperatures of the metal-on-metal operation of the brake by
routing the brake fluid plumbing outside the brake housing. Bombardier
hydraulic brake discs are machined for a consistent, true surface.
Rotax Electronic
Reverse (RER)
RER is an intelligent
ignition management system that reverses the direction of the
sled with just the push of a button. When activated, RER slows
the engine to an idle then reverses the engine's ignition spark.
That reverses the direction of the pistons, reversing the drivetrain's
direction, and finally reversing the direction of the snowmobile.
It adds no weight, requires no battery, nor extra power, making
it extremely reliable.
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