If you can find bolts long enough, I would suggest using graded bolts instead of threaded rod... Hardware store threaded rod is really soft material (saves cost in manufacturing) and will be bendable by hand in this application unless you have a bearing near the control wheels to keep the operator from applying any bending forces to the extension. 1/2" grade 8 bolts are pretty easy to find and will be much stronger.
TheSasquatch9053 t1_iybpiy4 wrote
Reply to Extending axles with coupling nuts, rods - thread-locker or weld? by hiryuu75
If you can find bolts long enough, I would suggest using graded bolts instead of threaded rod... Hardware store threaded rod is really soft material (saves cost in manufacturing) and will be bendable by hand in this application unless you have a bearing near the control wheels to keep the operator from applying any bending forces to the extension. 1/2" grade 8 bolts are pretty easy to find and will be much stronger.