TERMS OF USE: By using the Torque Conversion Calculator, you agree that you alone are responsible for the conversion calculation, torque wrench setting, and any actual application of the conversion calculation. This will correct for any change in leverage caused by using the crowfoot wrench. T2 – Final torque wrench setting that you should use. If the position of the crowfoot wrench decreases the effective length of the torque wrench, creating a negative change, then input this amount into the equation as a negative number. Measure in a line parallel to the body of the wrench. Measure from the center of the fastener to the center of the square drive tang on the torque wrench. (For other brands of torque wrenches, check the manufacturer recommendations, or use the center of the handle grip if the manufacturer does not recommend a location).Ĭ – Change in length caused by the crowfoot wrench. Tekton split beam torque wrenches have a line in the center of the handle. Most Tekton micrometer torque wrenches have a groove in the knurled handle grip. First, set the torque wrench to the torque spec for the fastener (T1) and then measure in a straight line parallel to the body of the wrench. Measure from the center of the square drive tang to the indicator line on the handle of your Tekton torque wrench. L – Effective length of the torque wrench. T1 – Torque specification for the fastener. The formula assumes that the head and handle of the torque wrench are straight and that the flex head, if present, is not engaged. The diagrams above show a representative sample of a Tekton split beam-style torque wrench. Please note that it’s always important to use proper technique in order to get accurate results with your torque wrench. Use the torque conversion calculator provided below to adjust for using the crowfoot wrench at any angle. One such way is to use torque magnitude of force times the perpendicular distance from the line of action of the force to point, where the perpendicular distance is called the moment arm. In fact, if you do a calculation based on the new total length of the torque wrench and crowfoot wrench combined, you‘ll be able to accurately measure torque with the crowfoot wrench in any position. In situations like this, you can still accurately measure torque. Sometimes it’s not possible or desirable to work with your crowfoot wrench at a 90-degree angle to the wrench handle. This is because the center of the fastener remains on the same plane as it was before you added the crowfoot wrench, meaning that the overall effective length of the torque wrench stays the same. You can set the torque wrench to the fastener’s torque specification and continue to use the torque wrench normally. If you place the crowfoot wrench at an angle 90-degrees to the torque wrench handle, the amount of torque you’re applying doesn’t change. You could be applying more or less torque than you intended to, depending on how the tools are working together. When you connect a torque wrench with another tool, like a crowfoot wrench, it's important to pay attention to how the two tools are configured. View Notes.WRENCHES How to Use a Torque Wrench with a Crowfoot Wrench Technical information, teaching suggestions, and related resources that complement this Concept Builder are provided on the Notes page. Learners and Instructors may also be interested in viewing the accompanying Notes page. However, the nine different groups of questions can be printed. There is no need for an activity sheet for this Concept Builder. Users are encouraged to open the Concept Builder and explore. Use of this Concept Builder with our Task Tracker system allows teachers to track student progress. Each situation involves the same question: which direction will the meter stick rotate - clockwise, counter-clockwise, or not at all? Question-specific help is provided for each of the nine situations. The nine situations are organized into three different ability levels. There are nine different situations, each involving three torques, which learners must analyze. The Torque-ing About Rotation Concept Builder is a tool that challenges the learner to use information regarding force and lever arm for opposing torques in order to determine the direction that a beam would rotate. Concept Builders » Rotation and Balance » Torque and Rotation
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