Sprag Clutch

The Sprag clutch is utilized in each shiftable section of the LENCO with the exception of the reverse. Its used to force the gear set to make ratio by preventing the sun gear from rotating in one direction. When this same section is shifted the Sprag then allows the sun gear to rotate in the same direction as the crankshaft.

Different Sizes

LENCO utilizes several different styles and sizes of sprags depending on which application the transmission is used for.

Small Sprag Assembly

This is a our small Sprag, note the snap ring in the outer race and single brass thrust washer. Unfortunately, we no longer sale small Sprags do to the ever increasing horse power produced with today's motors. We found the small Sprags service life growing shorter and shorter, so we have discontinued it and highly recommend upgrading to our large Sprag assembly.

Large Sprag Assembly

This is our large sprag and unlike the small sprag doesn't have a snap ring in the outer race and has two brass thrust washers. This is what comes standard in most new LENCO transmissions. It's capacity is much stronger than the small sprag.

Large Strips and Clips Sprag Assembly

This is a specialized sprag and is used in applications where tire shake is a constant problem. It has special attachments to help it react quicker between the locked and the overrun position thus extending its service life.

Double Large Sprag Assembly

This is our double large sprag assembly and is used primarily in the boat applications, but has found its way into some car applications. This is a very extreme duty sprag assembly