BRP reveals new vibration damping clutch technology

This unique new solution adds no weight but solves the vibration issue many large displacement two-cylinder snowmobile engines experience.

Damping clutch technology graphic.
Image courtesy Ski-Doo

Since the launch of the REV Gen 4 platform, BRP has been using a Patent Pending technology on the pDrive clutch to minimize engine vibration. This unique new solution adds no weight but solves the vibration issue many large displacement two-cylinder snowmobile engines experience.

To minimize vibration from the extra 50cc’s, extra 10 horsepower and 30% faster response of the Rotax 850 E-TEC, Ski-Doo engineers designed an industry first, counterbalancing pDrive fixed clutch sheave.

Those with a keen technical eye will notice the D-Shaped crankshaft alignment and the twenty four thousandths (.024) of an inch (.6mm) precise offset or runout built into the clutch sheave. This runout keeps the belt more perfectly tensioned within the primary and secondary clutches to reduce vibrations sent into the chassis through the secondary clutch.

The timing of the runout’s high spot meeting the belt is synchronized with the engine’s firing to offer a counterbalancing effect without added weight or complexity. The net result is less vibration transferred into the chassis and the rider.

Engine movement graphic.
Image courtesy Ski-Doo

Because of reduced vibration transferred to the belt, the belt temperature remains stable or even cooler, compared to not having this runout.

Related Articles

Former Arctic Cat building with For Lease sign on it.
SnoRiders Insider Textron closes Arctic Cat new head office in downtown Minneapolis

Textron has taken over the lease for the former Arctic Cat building and is looking for a commercial enterprise to take over the premises.

Polaris Hillclimber Kody Kamm.
SnoRiders Insider Polaris Hillclimbers deliver terrain domination on the RMSHA Circuit, winning nine of 12 Pro Points

AXYS RMK sleds win 27 of 28 Pro Stock finals and all four Pro Points titles

Polaris Racer Luke Rainey.
SnoRiders Insider Polaris Hillclimbers sweep the Pro Stock classes at Grand Targhee

Polaris also sweeps King and Queen Crowns and all three semi-pro classes.

>
View all SnoRiders Insider articles

Comments