How to use this calculator
- Measure axle length. Use center-to-center distance between CV joints.
- Measure offsets. Enter vertical and fore-aft joint-center offsets.
- Set angle limit. Use a supplier or packaging limit.
- Read margin. Check operating angle and remaining angle margin.
How it works
The calculator combines vertical and fore-aft offsets, then compares that offset against axle length: angle = asin(offset / axle length).
Combine it with suspension wheel rate and wheel offset checks when packaging suspension changes.
Worked example
Verified against the live calculator
A 420 mm axle with 75 mm vertical offset and 25 mm fore-aft offset has about 10.8 degrees of static operating angle.
Frequently asked questions
How do you calculate CV joint angle?
Find the perpendicular offset between joint centers, divide by axle length, then take the arcsine.
What offsets should I enter?
Enter vertical offset and fore-aft offset between the inner and outer CV joint centers.
Does this include suspension travel?
No. It is a static geometry check. Compression, droop and steering can increase angle.
What is a safe CV angle?
Safe angle depends on joint design, duty cycle and torque. Use the supplier limit when available.
Method & assumptions
- Uses static joint-center geometry only.
- Check full bump, droop and steering lock before relying on the static angle.