An explicit torque-adapter model
A fictional maintenance-mathematics exercise specifies a desired fastener torque of 150 pound-inches. The torque wrench has an effective length of 12 inches from the designated force point to the drive axis. A straight adapter adds 3 inches along the same axis, and the force is applied perpendicular to the wrench at the stated point. The exercise uses an ideal rigid-lever model, with no other geometry or calibration correction. A learner sets the wrench to 150 and assumes the fastener sees exactly the same torque. The task asks for the indicated setting and why the longer lever changes the relationship. This is a calculation exercise, not an approved maintenance instruction for any actual fastener. Real work requires the specified torque, tool condition, adapter geometry and applicable correction procedure.
1. Calculate the indicated torque setting in this model.
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The setting is 150×12/(12+3)=120 pound-inches. The longer effective lever produces the required 150 pound-inches at the fastener with that indicated setting.
2. Can the same correction be used for every adapter angle?
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No. Effective axial length depends on geometry. The actual adapter, force application point and approved correction method must be identified.