4040 Viper User ManualRevision 3, Oct 2012 2 Analyzer Description – 2-172.5.1.9. Right-Angle Sensor MountThe right-angle sensor mount shown in the left portion of the illustration above is made ofanodized aluminum and designed to be mounted directly on the engine case bolt or to thecase bolt adapter, shown in the right portion of the illustration above. The mount has a 1/4 x28-threaded hole for the vibration sensor and a 5/16 unthreaded hole for the case bolt adapterstud.2.5.1.10. Gram ScaleA 150-gram capacity scale is included with the propeller balancing kit for weighing thewashers or trim weights used in balancing. Read the operating instructions enclosed with thescale carefully prior to its use.2.5.1.11. Reflective TapeThe reflective tape supplied with the propeller balancing kit is used as a tachometer triggerfor the Phototach to generate a once-per-rev pulse used in speed readings and balancingcalculations. The reflective tape (3M 7610) supplied with the propeller balancing kit wasselected because of its excellent reflective quality and performance under varied operatingconditions. Using a lower quality tape will cause inaccurate tachometer readings or unreliablephase information. The tape is manufactured by the 3M Company and is the only tape werecommend for use with the system. Contact ACES Systems for replacement tape. (SeeChapter 15, “Equipment and Accessory Setup and Troubleshooting” for additionalinformation for high RPM)