Take the guesswork out of your chassis setup with the free TREMEC Driveline Angle Finder.
By using your smartphone as a measuring device, the Driveline Angle Finder app will calculate each u-joint angle and provide an overall driveline operating angle with a Pass/Fail response.
This unique App will help you avoid vibration problems associated with incorrect driveshaft and u-joint working angles. The three-step graphical interface provides measurements essential for proper driveline setup, along with tips and instructions that make it possible to check angles like a pro!
The TREMEC Driveline Angle Finder App is designed to measure driveline angles on RWD vehicles equipped with a one-piece driveshaft.
Note: This App is not designed to measure compound angles resulting from horizontal offsets (driveline as viewed from above), and may have some limitations based on the specific smartphone used. Caution must be used when interpreting results.
If the results provided by this App are within an acceptable range but driveline vibrations are still experienced, it is recommended that you consult a driveline professional for a thorough inspection.
The vehicle should be on a level surface with its weight supported by all four tires. If available, the use of a drive-on hoist is preferable. Be sure to take proper safety precautions by using wheel chocks, jack stands, etc.
You will be asked to take three readings with your smartphone at various points on the vehicle (see diagram). Use
a flat edge of your smartphone and make sure surfaces are clear of debris to ensure accurate readings.
Important: All readings must be taken from the same side of the vehicle, Orientation from the driver side is
recommended.
Place smartphone on flat surface parallel or perpendicular to engine crankshaft or transmission output shaft. Hold
the device steady and press NEXT to record the measurement.
The display will indicate whether the slope is up or down.
Most machined surfaces on the engine or transmission should be parallel or perpendicular to the engine crankshaft or
transmission output shaft. To ensure accuracy, it may be suitable to observe the measurement from multiple points before recording and proceeding to the next step.
Press “BACK” to return to the Measurement Instructions, and “NEXT” to continue to step 2.
Place smartphone on the flat surface of the driveshaft. Hold the device steady and press NEXT to record the measurement.
This measurement is best recorded from an area of the driveshaft free of any balancing weights or seams that may distort the surface.
Press the “BACK” button to return to Step 1, and “NEXT” to continue to step 3.
Place your smartphone on a flat surface on the rear axle that is parallel or perpendicular to the pinion. Hold the device steady and press NEXT to record the measurement.
The display will indicate whether the slope is up or down.
To ensure accuracy, it may suitable to observe the measurement from multiple points before proceeding to the next step. Some applications may require the removal of the driveshaft to record measurement from the pinion flange.
The driveshaft-to-flange position should be marked prior to removal in order to maintain original indexing. Check to ensure that u-joints are properly phased (in line) and in good working order. Reinstall driveshaft using manufacturer’s recommended torque specs. Failure to do so may result in distortion of bearing caps, resulting in vibration and premature u-joint failure.
Press the “BACK” button to return to Step 2, and “NEXT” to proceed to results.
IF ALL ANGLES ARE WITHIN SPEC:
Congratulations! Your angles are within acceptable limits. Press the “?” icon for more information about these
results.
Your angles appear to be within the acceptable range, however, please note:
IF ONE OR MORE ANGLES EXCEED SPECS:
Sorry! It appears that one or more of your angles is incorrect or exceeds the recommended limits. Press the “?” for more information about these results.
Your angles appear to be outside of the recommended range. Please consider the following information:
Click Here for Complete User Instructions (PDF)
The Driveline Angle Finder is part of The TREMEC Toolbox which will help you simplify driveline setup, predict the effects of changing gear ratios and tire size, and calculate vehicle speed and RPM variables. This Toolbox is great for planning your rig, allowing you to see what kind of performance to expect from different combinations!
The TREMEC Toolbox contains:
Click on your system icon below to download:
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