Okay Magoo, let's work it backward.You want 20 ft/lb on the bolt, right? There's only 2 variables left: force and distance. Now if my extension is .5 feet and t-wrench effective lentgh is 2 foot, then the lever is 2.5 feet long. How hard do I pull on a 2.5 foot lever to get 20 ft/lbs on bolt? 8 lbs, right? 2.5 X 8 = 20. Now I need to figure out how to get an accurate 8 lbs pull (NOT ft/lbs) on the end of my 2.5 foot lever (t-wrench + extension). The only gauge available is the torque scale on the t-wrench (handy eh?). 8 lbs pull on a 2 foot t-wrench yields a reading of 16 ft/lbs on the scale, so, pull the torque wrench with the extension on till it reads 16 ft/lbs and your bolt will be torqued accurately to 20 ft/lbs. Let's try it with a 1 foot effective length t-wrench + .5 foot extension. Lever length is 1.5 feet, so,1.5 X 13.33 = 20 . I need 13.33 lbs pull on a 1.5 foot lever to get 20 ft/lbs, right? Okay it's easy this time,to get 13.33 lbs pull on a 1 foot effective length t-wrench, you pull till the gauge reads 13.33 ft/lbs. So put the extension on your 1 foot t-wrench and pull till the gauge reads 13.33 ft/lbs and your bolt will be torqued accurately to 20 ft/lbs. Just think, pull, in lbs times lever length, in feet gives you accurate torque in ft/lbs on your bolt. I guarant....aw heck just check it out. <img src="/forums/images/graemlins/lol.gif" alt="" /> <img src="/forums/images/graemlins/lol.gif" alt="" /> <img src="/forums/images/graemlins/lol.gif" alt="" />

Scotty