Yeah, I posted the formula for determining torque settings using extensions, but that was never the question.

The question is how to determine torque on a long handle WITHOUT using a torque wrench. The only way I know to do it would be through figuring mechanical advantage relative to a known distance of handle. If you can't get the torque wrench socket on the nut to derive a known value from which to compare, then you must do the calculation by pure mechanical advantage, first tested with the bolt and nut off the vehicle in a place where you can get a torque wrench on it. Then you can determine handle length relative to applied torque. By using the Ratio of Circumferences you can then determine mechanical advantage on a longer handle and adjust applied force as necessary. However, if you cannot do the initial baseline calculation with the fasteners off of the vehicle, then you don't have enough information to derive an answer. There must be a baseline determination method when mechanical advantage is first figured.... i.e. - the difference in turning the nut with your fingers as opposed to putting a socket on the nut and turning the socket - obviously a difference in mechanical advantage. So what circle circumference is used as baseline? I suspect it's the mean diameter of the threads, but I don't know and one day intend to find out the answer.

Frank