Alwaysthinkin
Full Access Members
Just re-calibrated my click style torque wrench today and thought I would share. FYI, this was learned from other posts on the internet so I can't claim the idea.
In my case, I purchased a fish scale (luggage scale can work also) for $20. There are cheaper ones but this one is at least water resistant so I can use it to weigh, well fish!
Measure from the center of the socket plug to the middle of your torque wrench handle. You will need that measurement for the math and, that is the point on the handle you will put the fish scale when you start. Clamp the socket plug in your bench vise, making sure the rest of the wrench is above the bench vise. Next take that measurement from earlier, in my case the distance from socket plug to middle of handle was 15 inches. The math went like this:
15" divided by 12" (foot per pound is the scale) is 1.25"
Then I just wrote down in 10lb increments the expected weight required to make the torque wrench click.
i.e.
10/1.25 = 8lbs (that is the reading you should have on the fish scale when the torque wrench clicks}
20/1.25 = 16lbs
30/1.25 = 24lbs
and so on and so on
Then use the fish/luggage scale to check a setting on your torque wrench. Suggested was roughly mid range of the torque wrench capabilities. I started lower, at 30lbs/in, and discovered my wrench was not accurate at all. Adjustment on my wrench was to remove the back nut at the end of the wrench and tighten the tube inside (that the nut tightens on) by turning to the right. That tightens against the spring on the inside. Opposite, left, to lower the weight required.
Hope someone else finds this info of use.
In my case, I purchased a fish scale (luggage scale can work also) for $20. There are cheaper ones but this one is at least water resistant so I can use it to weigh, well fish!
Measure from the center of the socket plug to the middle of your torque wrench handle. You will need that measurement for the math and, that is the point on the handle you will put the fish scale when you start. Clamp the socket plug in your bench vise, making sure the rest of the wrench is above the bench vise. Next take that measurement from earlier, in my case the distance from socket plug to middle of handle was 15 inches. The math went like this:
15" divided by 12" (foot per pound is the scale) is 1.25"
Then I just wrote down in 10lb increments the expected weight required to make the torque wrench click.
i.e.
10/1.25 = 8lbs (that is the reading you should have on the fish scale when the torque wrench clicks}
20/1.25 = 16lbs
30/1.25 = 24lbs
and so on and so on
Then use the fish/luggage scale to check a setting on your torque wrench. Suggested was roughly mid range of the torque wrench capabilities. I started lower, at 30lbs/in, and discovered my wrench was not accurate at all. Adjustment on my wrench was to remove the back nut at the end of the wrench and tighten the tube inside (that the nut tightens on) by turning to the right. That tightens against the spring on the inside. Opposite, left, to lower the weight required.
Hope someone else finds this info of use.
