#1
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Question for you precision tool guys
You know that torque wrench that you use religiously? The one that you don't drop, don't store it at anything but 0 Nm, and don't use it as a socket to back off bolts? Assuming that you don't use it day-in-day-out, it should remain calibrated for a long time.
However, what do you do when you have to torque something to spec that's reverse thread? I'm assuming the torque wrenches we buy as consumers are only calibrated in one direction, hence the not using it to back off a bolt, but there's no difference between backing off a bolt and tightening to spec when it's reverse threaded. Given, I'm only talking about the click-type torque wrench (or beep if it's digital) and not a beam-type torque wrench (I've never used a beam-type). |
#2
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I do not use torque wrench... i use the index and thumb technique, and helps a lot that i been doing that like for 40 years
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#3
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I would use a beam torque wrench in that case. They’re pretty accurate. There could be other clicker or beeper ones that can go backwards but I can’t really say. My good torque wrenches actually don’t have a reversible ratcheting mechanism at all, presumably to keep people from using them as a breaker bar.
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#4
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How high do you need it to go? Tekton has this one: https://www.tekton.com/1-4-inch-driv...rench-trq21101
Lowe's Cobalt has this one: https://www.lowes.com/pd/Kobalt-3-8-...-lb/1000259427 Last edited by rePhil; 11-09-2019 at 02:53 PM. |
#5
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I'd prefer to have two- a 1/4" drive for up to 5Nm and a 3/8" drive for up to about 50Nm. Right now I'm working with a PRO 1/4" and a Husky 3/8" which I've had forever. Strangely, the only cheap crap I have in my tools are those two torque wrenches.
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#6
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My CDI torque wrench specifies accuracy in clockwise and counter-clockwise directions. Not the same tolerances but pretty close.
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ryan | islandix instruments |
#7
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What makes you think it makes any difference? As others mentioned, a beam type works both ways. That's what I use for BBs.
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#8
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Some clicking torque wrenches allow operation in both directions (CW & CCW) and even specify the accuracy in either direction. In those cases, the CCW direction might sometimes be less accurate.
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#9
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Mine have that option(clicky one) but is it safe to use it to tighten in that direct? It wont damage anything right? just less accurate?
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#10
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My torque wrenches (click type Snap Ons) are checked for calibration once a year by a place that inspects A&P tools. Each one is checked in both directions and a report is provided on the performance.
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#11
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Quote:
“Tighten till that peanut butter wrench makes a mark on your hand”... With today’s Uber light ‘stuff’, torque wrenches are cheap, accurate and will save you $ in the long run....first gen carbon Modolo hbar, red one, ‘6 bend’’, 26mm, tighten face plate and..........Crack!! Those bars are expensive, even at wholesale as I threw this one away, grabbed another, for the customer....
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Chisholm's Custom Wheels Qui Si Parla Campagnolo |
#12
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Snap On's torque wrench (metric 20-100nm ratchet) works in both directions. The clicker is built into the head not the ratchet. 3/8" is about $370
1/4" (5-25nm) is $340.
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IG: elysianbikeco Last edited by false_Aest; 11-10-2019 at 10:12 AM. |
#13
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Ha - I remember those days ...
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#14
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Quote:
Sent from my SM-G973U1 using Tapatalk |
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