A longer arm on the torque wrench will give you relatively higher torque - below, supposedly, is the equation:
Here is the formula: M1 = M2 x L1 / L2
Where:
M1 is the torque setting of the wrench.
M2 is the actual torque applied to the nut
L1 is the normal length of the wrench
L2 is the extended length of the wrench (Length of wrench + length of adapter)
Example:
M1=torque wrench setting ?
M2=80 FT-LBS (Desired torque)
L1=18" (Length of torque wrench)
L2=22" (Total length of wrench with 4 inch extension added to wrench)
80x18/22=65.45 M1 therefore = 65.45; In other words if you want to torque a fastener to 80 FT-LBS using an 18 inch torque wrench with a 4 inch torque extender you will set the wrench to 65.45 FT-LBS
Richard D. Scherrer
airframe and powerplant mechanic - Kalispell, Montana
