Tightening Motorhome Lugs

randallb wrote:
I have always used a 2', 3/4" breaker bar. I stand on the end and that gives me 400 ft/#s. I then give a small hop and they are tightened close enough to never come loose or stress the threads on the studs. Sometimes the members of this forum flat over think things.
Randy

Is that a calibrated hop?

If you "hop" 6" on that breaker bar we need to account for force from decelerated gravity from 32 ft/sec^2. So if F=m*a and a=v/t or a=d/t^2 we could determine force if we knew the movement of the breaker bar from 0 to 200 lbs. We'll need the elasticity constant of the breaker bar so we can derive the REAL torque. What kind of alloy is it?

That "hop" is an interesting variable to ponder . . . . We can always over think this!

But I like the simplicity of your method.

Best,
- c bob