What is a sprag clutch triumph?
A sprag clutch is used in some automatic transmissions as a method of allowing the transmission to change gears smoothly under load. A sprag clutch is used in most older automatic transmissions and some newer ones for shifts which require the synchronized engagement of one clutch with the disengagement of another.
What is sprag clutch and why used in automatic transmissions?
A sprag is a one-way mechanical clutch used in many automatic transmissions as a method of allowing the transmission to smoothly change gears under load. Allomatic sprags are full-hardened, individually loaded, and made with high-quality maraging steel that provide higher fatigue limits than stainless steel.
What does a sprag do in a torque converter?
Simply put, a sprag is a one way clutch, functioning just as a ratchet does in your toolbox. It is locking in one direction and freewheeling in the other direction. Every torque converter manufactured by OEMs has a sprag. A functioning sprag is very important for a street car making 100-200 HP and 500-3000 rpms.
What does a sprag do in an automatic transmission?
How does a 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 ratcheting sprag transmission?
Sprags are sized, shaped and mounted in a way that causes to wedge between the two races transmitting torque from one to the other when rotated in the drive direction. A sprag type of overrunning clutch delivers more torque for any given size than can be delivered by a roller type of overrunning clutch or a ratchet.
What does transmission sprag do?
A sprag is a one-way mechanical clutch used in many automatic transmissions as a method of allowing the transmission to smoothly change gears under load. Our sprag profiles are designed to reduce drag and create less wear.
