Shep wrote on Tuesday, January 02, 2001 (PST): Keep 'em coming Mr. Von Frange. You have provided me with many valuable insights and have instrumental in beginnning my tech library. Right now I am a sponge seeking all the wisdom I can obtain when not riding my 550 Ds. Shep Mike OH wrote on Saturday, January 06, 2001 (PST): Thanks for another good article. One should also keep in mind that when replacing hardware to use the same grade of fastener as originally supplied, and to check the tightness of hardware regularly. jerry wrote on Saturday, January 06, 2001 (PST): This is an excellent article. But I do have a question. In the past I have had to use a torque adapter, this is a short wrench with a box end on one end and a square hole on the other to accept the square drive of the torque wrench. These are commonly used to torque the heads of harley davidson motorcycle engines, as there is no room to use a socket. When you use one of these you alter the torque, so there is a formula to use to figure out the proper torque. does anyone know what that furmula is? I would sure appreciate it. Ralph Britt wrote on Thursday, January 18, 2001 (PST): As a heavy equipment mechanic I often use an X-4 multiplier and it allows me to use a 1/2" torque wrench to pull up to 1000 ft/lbs. This allows you to pull heads up to 6 and 700 lbs easily instead of using a big 3/4" or larger torque wrench. richard wrote on Saturday, January 20, 2001 (PST): Good Article. I'd add one more rule --keep use of extensions on tq wrench to an absolute minimum. If an extension must be used, make sure your are pulling with the extensinon in line with bolt and wrench at 90 to centerline of extension/bolt. Failure to do so can give incorrect readings. Lynn wrote on Tuesday, May 22, 2001 (PDT): Great articles, Keep 'em comin. Like one of the other commenters said-- When in doubt use the same grade fastener or stronger. Unless you know that it is a "non-durable wear area." then you can use a lesser quality fastener. Dave Smith wrote on Sunday, June 24, 2001 (PDT): When torquing the head on my 8N I used a clicker type wrench (new). After I used the 3 step method I got the bolts to 65 lbs. I then tried my beam type torque wrench and found the bolts to be only at 50 lbs. I tend to believe the beam wrench and used that to bring the bolts up to the 65 lbs. Is there a way to check the calibration of torque wrenches? Dave Smith < bob wrote on Thursday, April 25, 2002 (PDT): i also need a formula for torque with an extension,4in.extension with a snap-on torque wrench,please help,my e-mail is robertmalloy@hotmail.com HENRY wrote on Thursday, October 10, 2002 (PDT): WHEN USING THE TORQUE WRENCH, CAN YOU USE AN EXTENSION DRIVE ADAPTER WITHOUT AFFECTING THE TORQUE? I WAS TOLD BY MANY TOOL DEALERS THAT YOU MUST NOT USE AN EXTENSION DRIVE ADAPTER BECAUSE YOU WILL NOT GET THE RIGHT READING.THIS IS A TOPIC I AM ARGUING OVER WITH MY SCHOOL INSTRUCTOR. WHO IS RIGHT HERE ? C Buthala wrote on Thursday, October 24, 2002 (PDT): My employer was eliminating tools from the chassis lab today, and I found a two person beam type torque wrench. I have been looking on the internet for information on such a tool and have not found any. Your article was the most informative so far. The wrench was made by PA STURTEVANT CO. in Addison Illinois and torques to +/- 750 ft/lb. This device has the indicator neddle attached to one end and the scale attached to the other. It's a novilty of old tools. Just wanted you to hear about a new, old torque wrench. P.S. I think it would take three people to actually use this wrench to 750 ft/lb. Jonathan Thomas wrote on Tuesday, February 25, 2003 (PST): Hi Curtis, I see you are still doing a fine job of writing. Keep up the good work. Jonathan jrb wrote on Saturday, July 19, 2003 (PDT): Great article, however most people forget to return there torque wrench to 0 reading & store in a case. One other thing to consider is calibration of this tool. Have fun folks JRB Jon wrote on Monday, September 29, 2003 (PDT): In the "Pocket Ref" second edition, they list torques for many sizes and grades of bolts. These are shown as "dry" torque numbers. They also include a table called "effect of lubrication on torque and they say to REDUCE the torque by 26% to 49% for a 1/2"-13 TPI bolt [26% for plated & cleaned and 49% for a graphite & oil mixture}. I assume that published torques are "dry" values unless otherwise stated. In your article, you recommend lubricating the threads but you don't discuss adjusting the published torque numbers accordingly. The reference that I have also states that we are to raise the torque on fine-thread bolts by 9%. Your comments on fine-thread and lub'ing would be important I think. J Terry G wrote on Wednesday, December 10, 2003 (PST): How to compute torque when using adapters. dial or pre-set torque reading = torque wrench length X torque desired, over torque wrench length + extension length. lenght of wrench is from square drive end to center of handle. Length of extension is from female adapter center to center of hex typically. Increasing the lever length reduces the amount of input force to achive the desired torque. Yes straight extensions when used ONLY at 90 degrees to the torque wrench should not affect desired torque. Any other dog bones or curved adapters must have the extra length worked out with the formula above. Straight socket extensions will not affect torque. If you do not pull from the center of the handle of a torque wrench this can give false readings. On click type wrenches to maintain good calibration one should return them to zero after use. This will keep the internal spring mechanism from going bad and giving false readings over time. I have used alot of different torque wrenches in an engineering lab. But seldom used extensions other than socket extensions. I have known the exsistance of this formula and it works. I have a Snap-on torque manual "ZTQ-2". its a small 12 page booklet that has alot of interesting info. Perhaps one can still get this from their toolman? Harry Hill wrote on Thursday, January 01, 2004 (PST): It seems that when you torque 'almost' up to specs, you are really NOT torqueing to the right value. Torque should be in ONE move (from snug) to the spec. You have to over come the grip of the nut/bolt before getting another reading. The question is; "How do you check the torque?". Answer; IMPOSSIBLE. Why? To do so you have to apply more torque just to move the object. Only way is to loosen/retorque. Michael Kendall wrote on Saturday, June 05, 2004 (PDT): When you are dis-assembling something or just want to check current torque settings, wouldn't it be fair to say that you should loosen the bolt bolt, and the highest amount of torque applied was probably close to what it was originaly torqued at? J. Anne wrote on Friday, June 18, 2004 (PDT): I am replacing the head gasket on my 1955 Cub Lo-boy. Can't find the torque pressure needed to do this...any suggestions???? townsend wrote on Friday, March 11, 2005 (PST): I thourghly enjoyed your article on torque whenches, very informative. But I do have a question. In certian instances it is impossible to get a socket, plus the end of a torque wrench in a fastner, Then you have to use what I have always known as a torque adapter. This would look like a very short box end with a square drive on one end and the approiate size wrench on the other. There must be some kind of formula to use with the torque adapter to get the correct torque as the leverage has been changed. Does anyone know this formula? veer vinod wrote on Wednesday, March 26, 2008 (PDT): i would like to know how to calculate correct torque for pressure vessel operating at 14 bar. 2120mm ID. 32mm bolt .Flange dia 2400mm. PCD2200. number of bolts 56. Tim Daley(MI) wrote on Wednesday, November 06, 2013 (PST): I just wanted to add the fact that using a torque wrench to loosen a fastener is not recommended. It is a sure way to ruin the tool fast. READ the instruction manual first before attempting to use the wrench if you have no experience. You also will need to be certain you have the setting correct -some red in INCH-POUNDS, some read in INCH-OUNCES, and some read in NEWTON-METERS. Eric in Sonoma, Ca wrote on Wednesday, January 11, 2017 (PST): Apply torque at a uniform rate, final torque should be reached in motion. If you exceed the final torque, loosen the fastener a little and try again to hit the final point while in motion.

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