DIY Digital Torque Wrench for $20
Posted: Mon Apr 23, 2012 10:04 am
Recently I whipped up a digital torque wrench for change out of $20 - just to do all those hard-to-access fasteners on motorcycle heads.
The digital scales are on special at the moment from a certain camping store for $10 (normally $50) and the bit of pipe was $5 from the local hardware. The 13mm combination spanner was sacrificed and makes both an open-ended and ring-end for the wrench.
The pipe was cut to 0.5 metre and allowance made for the spanner attachment at the business end. The ends were cross-drilled and tapped M6 for a screw and locknut to locate the spanner piece.
The setting you're aiming for is double the stated torque in kg*m (as the pipe is 0.5m). Pull steadily on the scale handle keeping it normal (at 90 degrees) to the pipe as you do.
The digital scales are on special at the moment from a certain camping store for $10 (normally $50) and the bit of pipe was $5 from the local hardware. The 13mm combination spanner was sacrificed and makes both an open-ended and ring-end for the wrench.
The pipe was cut to 0.5 metre and allowance made for the spanner attachment at the business end. The ends were cross-drilled and tapped M6 for a screw and locknut to locate the spanner piece.
The setting you're aiming for is double the stated torque in kg*m (as the pipe is 0.5m). Pull steadily on the scale handle keeping it normal (at 90 degrees) to the pipe as you do.
