Some of the [car X] clan had no problemo using an electric? air? 'impact wrench' -- and others did. Ditto the long, slow grunt way.

I'm about concluding that the supposed torque-on figures + whatever results from the range of thread tolerances, storage in wet garages etc. -- might mean a release torque maybe even 2x, 3x? the supposed value. Clearly (as to car X) -- the experience varied greatly among different operators.

And all the 'data' is clouded by the amount of energy which goes into bending (heating?) those lengthy poles, contrived by the desperate at 2 am.

Methinks I see a Q. on a grad ME exam: Calculate the energy! aka Impulse x Time to break the putative bond, then relate that to the mSecs of service via air or electrics. Some strange stuff is happening at that interface. (Remember when folks believed you could never accelerate (car with tires) beyond 1-G, because F=\ufffdN ??)
Dragsters have since demonstrated that 'gearing' effects wipe that simplistic idea of friction, too.

I can envision a long bar for torque, with a flattened 'anvil' area near the hub; the first foot or so being massive/stiff. One body pulls (or hangs) while another turns a maul loose on the anvil. As to your Jumbo $1700 gadget. Pshaw. Before that: chill/heat (as Box reminds) strike and soak.



I'm glad I won't have to find out anytime soon.
But it could still be fun to drive some ME students to distraction :-\ufffd