Halfords Advanced modular trays are designed to help you build your own ideal tool kit. Choose the tools that you need for the job and then choose the storage that you need. Our Halfords Advanced modular tray storage case will hold up to three trays for a portable tool kit, or build the complete tool storage solution using Halfords tool chests and cabinets. Features & Benefits: At this point, no dedicated brace was used even though there was a little sag (spoiler: that’s a key reason behind the torque loss). Now that things were to be stretched further, to minimize the substantial amount of sag, a chair was used as a brace to get as accurate results as possible. You have a wrench with a length of 24 inches and you have to put an extension of 4 inches on it to reach where you intend to. The recommended torque setting for the fastener is 180 lbs. What torque setting do you set the wrench on for a smooth sail?

Some wrenches will have a marking on the handle for reference, and that’s the point to measure up to from the center of the drive. If the marking isn’t there, take the middle point of the handle as your reference.While doing the same test with a 64-inch extension, the torque loss was 9.77% (without the brace) and 6.23% with the brace. At this point, the sag was so substantial that even after using a brace, a significant torque loss was seen. All these attempts were made from completely different angles, intentionally. The inconsistency of the outcome validates the hypothesis. What Causes Torque Loss? But here’s the upfront conclusion if you’re a skimmer—the extension does not cause torque loss as long as it’s perfectly perpendicular to the body of the wrench. But achieving the perfect angle is often tougher than it’s thought to be.

Even though many people don’t do this and are aware of the science behind it, many don’t. Some people are just comfortable holding a wrench at the very bottom of it, and they do the same for a torque wrench as well. Finally, testing out with an 88-inch extension, the results came out as 9.29% torque loss without the brace and 5.72% loss with the brace. The numbers were not exactly the ones that were expected because the torque loss was rather a little less than the 64-inch extension, but the pattern was somewhat upheld, we could say.Next up, two extensions were put together making a combined length of 19-inch, and that averaged out at 33.5 ft-lb, representing a torque loss of 3.83% compared to the baseline. Now, while trying out the same extension but this time without the chair as the brace, it to no surprise, again lost some torque, averaging out at 33.5 ft-lb representing a 3.74% loss from the baseline.

Our little equation: Torque Setting = (Wrench Length × Desired Torque) ÷ (Wrench Length + Extension Length)Well, it’s the case for straight extensions. Basically, any offset or extension that changes the distance between the centerline of the wrench drive and the centerline of the fastener needs to be adjusted.