9/21/2023 0 Comments Gorilla bow reviewsThe Metrology Services division is an arm of the long-running company Avery Weigh-Tronix which has been servicing and maintaining weighing equipment for over 200 years.Īvery Weigh-Tronix offers a range of metrology services - metrology being the science of measurement. I headed to the Calibration Select Metrology lab in Smethwick, Birmingham. The trio of torque wrenches used for testing (Image credit: Future / Tom Wieckowski ) When the torque applied to the bolt reaches the torque value set in the tool, the bearing allows the head to move and "click"." he explained. The spring is compressing a bearing placed under the wrench head. "It's a simple but precise mechanism, based on a calibrated spring that is put under a certain load when setting the "torque" dial. To recap and to help you picture what's going on inside your torque wrench in the context of testing, I will use Effetto Mariposa founder Alberto De Gioannini's clear-cut explanation of how a click-style torque wrench functions: The torque wrenches we sent for calibration were all click-style and as I've mentioned in the past, I think this style tends to be the most commonly seen in the bike world. Mechanics Paul and Josh were interested and on board with the project straight away and provided a couple of their own torque wrenches for calibration. The other two wrenches came from the mechanics at my old workplace Gorilla Coffee Workshop. I had my own Proxxon torque wrench to use, which had done a few years of heavy work and even sustained a couple of drops. Though I had worked through a range of service jobs on them all during testing they were brand-new units and I expected would only tell us what we knew already if we took them for testing.įor a more interesting set of results and piece in general I needed some used and older wrenches. The torque wrenches in our buyer's guide were all brand-new units and all good-quality ones. A torque wrench that has been in use for years, used as an emergency breaker bar, dropped, or left set etc may not be working accurately any more which means potentially over or under-tightened bolts and inaccurate or even unsafe work. Most manufacturers recommend and can provide yearly calibrations around every 50,000 clicks (uses), or every 12 months, whichever comes first. This was to ensure that torque wrenches are regularly calibrated to ensure accuracy can be ensured long term. This final torque piece follows up on a point that has been mentioned several times in these pieces and that was repeated by both manufacturers and mechanics alike. I also spoke to several large tool manufacturers to get some tips and best practice advice straight from the top on using torque with bike fasteners and how to best care for your own tools and torque wrenches. Comparing knowledge from mechanics in different industries provided some useful insights and comparisons as well as some tips to take away and possibly implement when working with bikes. I did some research and spoke to aircraft, bike and automotive mechanics from other industries, comparing their experience and use of torque compared to the bike industry.
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