What caused the driveshaft build to fail?
Documented on the Driveshaft build failure but heres how I tried to build
Published June 15, 2026
While the exact cause depends on inspection, common causes shown and discussed include poor weld quality/penetration, improper material or tube wall thickness, incorrect fitment/clearance at yokes, and inadequate dynamic balancing leading to vibration and fatigue.
Documented In This Build
Related Knowledge
Can I reuse stock U-joints and flanges from another shaft?What welding precautions are important?What would I do differently on a retry?What torque should I use on the driveshaft flange bolts?Can I use an F100 driveshaft in my '65 Mustang?What size U-joints do I need?How do I determine the correct driveshaft length?Do I need new U-joints when installing an aluminum driveshaft?
Related Parts
Fasteners (flange bolts, nuts, lock washers)
$15
Driveshaft tube (steel)
$120
Slip yoke / tailshaft yoke
$60
Universal joints (U-joints, set of 2)
$40
Flange / output yoke
$50
Center/carrier bearing (if 2-piece)
$45
Balancing weights / adhesive weights
$30
Related Tools
Torque wrench
MIG/TIG Welder
Drill press
Angle grinder / cutoff wheel
Lathe
Dynamic driveshaft balancing machine (or shop balancing service)
Calipers / tape measure / protractor
Press or arbor press
