KymcoForum.com
General => Technical | How To => Topic started by: Rianna on November 24, 2010, 09:10:27 AM
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I noticed in the manual that some of the standard torque specs are given in a measurement of kfg-m and some of them say kg-m.
My torque wrench says 'kilometer meters' on it. I don't see a 'g' or an 'f' anywhere.
What are these abbreviations referring to? And where can I go online to covert both of them since the manual seems to alternate between the two? Does anybody know?
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See if this helps.
http://www.onlineconversion.com/force.htm (http://www.onlineconversion.com/force.htm)
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How to use and adjust a torque wrench. These are well worth the money! This is a youtube video .
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Thanks, Cloud. That link will help with conversions. I still don't know the difference between the two or what they mean, but I will save that link.
Thanks, juice. I didn't see a link to the video, though.
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I noticed that too Rianna, I kind of assume that it is really all kfg-m and the 'f' got dropped during the bad translation job.
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I wondered that also, oswaldters, but I'm not really sure. If they are different units of measurement it would be good to know, even if I didn't understand it all. Someone may know for sure. If not I may add it to my google project list.
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A wise path to follow.
I haven't used a torque wrench on the scoot to this point, so I've been using the old 'hard enough so it's tight, not so hard that you strip it' approach.
But having recently acquired a torque wrench, I'll have to use it!
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I don't know how to do the video link , but those were the exact words in the title of the video . If you googled youtube and typed in the title I think you could find it .
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I liked using it, oswaldters. I got the basic economy style one. I wanted a fancier one, but the only fancier one they had at the auto parts store was more than twice the price and not very fancy at all so I took the inexpensive route. It's hard to read the scale so on the important bolts I used clear tape and taped a piece of white cardboard along the line of the higher measurement requirement of the spec I needed so I would know I had to get the needle at least that far on the gauge to have the peace of mind that all was secure.
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Oh...okay, juice. I'll do that. Thank you and Happy Thanksgiving!!
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I think this may be the link juice was referring to:
How to use and adjust a torque wrench. These are well worth the money! (http://www.youtube.com/watch?v=Xl-y0e6JREE#)
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Thank you, oswaldters. Will see what they have to say about it all...
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Try this:
http://www.spaceflight.esa.int/users/virtualinstitutes/plasmas/tools/NRL_Formulary/NRL_Formulary_page_13_medium.html (http://www.spaceflight.esa.int/users/virtualinstitutes/plasmas/tools/NRL_Formulary/NRL_Formulary_page_13_medium.html)
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I love this chart, Cloud! Lots of good info all in one place. The only thing about the measurements I understood from it, though was the 'kilo' part. :-\
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Torque = Force X Lever Arm. In the English system it's foot-pounds. In the metric system it's kilogram-meters. Never heard of kfg-m. I googled around and it's seems to be the same as kg-m. The "f" is for force. If your torque wrench says kilometer-meters, that doesn't make sense. That's saying a thousand meters-meters which is Lever Arm X Lever Arm. I question cheap tools sometimes.
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So sorry, Agent Bob! This time it was my fault and not the cheap tool's. I was very tired after not being able to sleep for 2 nights when I typed that. My torque wrench actually says METER KILOGRAMS and FOOT POUNDS. ;)
Here are some bits and pieces of info I found online and where I found them. I won't pretend to understand it all. But these pieces seemed easier to understand than reading about newton's force and such.
kg-m kilogram -meter http://dictionary.reference.com/browse/kg-m (http://dictionary.reference.com/browse/kg-m)
the mks gravitational unit of work and energy equal to the work done by a kilogram force acting through a distance of one meter in the direction of the force. About 7.235 foot-pounds
kgf-m kilogramforce -meter http://www.answers.com/topic/kilogram-force (http://www.answers.com/topic/kilogram-force)
Symbols kgf, kg-f, kilopond. (Metric) A unit of weight, i.e. force, represented by 1 kilogram of mass (kg or kg-m) subject to standard gravity.
To convert kg-m to ft. lbs. multiply by 7.235
To convert ft. lbs. to kg-m multiply by 0.1383
kg-m x 7.235 = ft-lb
ft-lb x 0.1383 = kg-m
And a handy chart for approximations if you're not up to the math from this manual:
http://chadt.us/ac/Sect1.pdf (http://chadt.us/ac/Sect1.pdf)
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Okay, so I'm getting tired here and may be borderline delusional, but it's looking like kg-m is the same as kgf-m?
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That's what I said, oswaldters!
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After I typed what I did and posted it Rianna, it dawned on me it might be a typo. Sorry. Please don't take my cheap tools comment as a dispareging remark also. I've been burned more than once where I had to go out and replace the cheap crap i bought with a good one. Wrenches made with soft metal come to mind. They look nice and shiny, but quality wise the metal is mush. That's why you pay more for a quality wrench...for the stuff you can't see.
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Hey, no problem, Agent Bob. Understood. Cheap tools make me crazy. Speaking of soft metal. I should post up pics of the sockets I mangled trying to break loose those brake mount bolts. It would be a clear picture of exactly what you're talking about.