This aluminum split collar provides a mounting platform for the magnets that are used to trigger the sensor when monitoring the revolutions of a shaft. It is typically used on rear end yokes or couplers to provide driveshaft RPM. Each collar is approximately 0.375 in. wide and houses two magnets which are located 180 degrees apart. For higher resolution, Racepak recommends an 8 magnet split collar.
*Some manufacturer restrictions apply.
Racepak LLC was founded in 1985 by Spencer Eisenbarth and Ron Armstrong, originally as Racepak and its parent company, Competition Systems, Incorporated (CSI). Both men were engineers with strong backgrounds in electrical and mechanical applications, and both had an interest in motor sports. Through an earlier joint effort aimed at obtaining data for the improvement of the Unlimited Hydroplane that Armstrong was piloting at the time, both men realized the need for onboard data acquisition equipment. Their respective backgrounds qualified them to develop such equipment, but the major task that needed to be overcome was in designing and building a data recorder that could survive in the unfriendly world of race vehicles. That challenge became the initial goal that led to the formation of Competition Systems, Inc. The continued success of Racepak has allowed CSI to grow. In the years that have followed Eisenbarth and Armstrong have quietly guided CSI into a strong presence in many forms of motor sports.
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