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Message: <blockquote data-quote="ibdennyak" data-source="post: 97301">Interesting concept. Been wrenching on my equipment for quite a few years, and Snap-On learned to love me. . Not passing judgement, just adding information. What a torque wrench measures is the friction developed to put a given amount of tension on a fastener. So you are already using apples to measure oranges. (Ideally you would measure the straight line tension on the bolt.....not practical when you are laying under a Cat in the mud replacing bearings. :yuck<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /> Torque wrenches measure friction very accurately, but other factors like lubrication, tensile strength of the fastener determining stretch, etc. enter into it, and can cause discrepancies. Counting turns adds more error possibilities because of different gasket compositions etc. That being said, who knows, it might work. I kind of think you may be over complicating the issue, but it can't hurt. The big thing would probably be using a big enough amount of samples to get a good average. If it works, I have a friend in Wisconsin I would like to introduce you to. He always said he used the bulge of his bicep to determine torque on the head bolts of his diesel farm tractor. Unfortunately, he also spent more time looking at his bicep bulge, than using the tractor. Blew lots of head gaskets. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin    :D" loading="lazy" data-shortname=":D" /> Anyway, try it and see what shakes out. Oh, by the way...your starting point is called "finger tight". <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin    :D" loading="lazy" data-shortname=":D" />Denny</blockquote>

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