How does a secondary clutch work on a snowmobile?
The secondary clutch connects to the track drive, which turns the wheels and powers the tracks. A spring in the secondary clutch operates the cams (wedges), which are sensitive to torque. As the engine’s RPM increases and the primary transmits power, these cams squeeze together and tighten the belt.
What is clutch backstopping?
Backstopping. In backstop applications, clutches allow the drive shaft to rotate freely in one direction. As soon as torque is reversed, the clutch automatically engages with a fixed frame to prevent any movement in the opposite direction.
What are secondary rollers?
Duraclutch secondary rollers are precision molded with an engineered bearing material developed in Germany. This material has excellent abrasion resistance, can handle high temperatures and has a high carrying capacity. Duraclutch rollers can withstand surface pressures up to 10,000 psi.
How do you remove a primary clutch on a snowmobile?
How to Remove a Snowmobile Clutch Without a Puller
- Flip the snowmobile on its side.
- Remove engine housing to expose the clutch.
- Remove clutch bolt.
- Wrap the Grade 8 bolt or clutch bolt with Teflon tape.
- Fill clutch bolt hole with water.
- Insert the bolt and tighten.
- Make repairs/replacements and then reassemble.
How does an Arctic Cat clutch work?
A snowmobile clutch consists of two different pulleys. Each of these pulleys is a clutch, and a belt connects them. A snowmobile has a primary clutch and a secondary clutch. They work together to transfer power.
How does sprag clutch work?
A sprag clutch has cam-shaped steel wedges (or sprags) that are placed at an angle and controls the one-way direction of movement. When the movement tries to go in the opposite direction an instant driving disengagement or locking occurs.
What is a helix on a snowmobile?
The helix is the mechanical device that actually separates the sheaves of the secondary via rub blocks or rollers. The helix angle basically determines how quickly the secondary opens and closes. A straight cut helix (let’s say 36 degrees) opens and closes the sheaves at a constant rate.