shao_khan Posted December 1, 2003 Report Share Posted December 1, 2003 When we talk about torque - what is the correct way of expressing pound feet? Is it per Sec, min or hour? Quote Link to comment Share on other sites More sharing options...
s4dreamer Posted December 1, 2003 Report Share Posted December 1, 2003 None of the above - torque is not a time-based measurement. Quote Link to comment Share on other sites More sharing options...
shao_khan Posted December 1, 2003 Author Report Share Posted December 1, 2003 OH, I am asking because I was looking for a conversion from lbfeet into Nm and all the web sites show it as lbfeet/sec or lbfeet/min, etc - this is what got me confused. Quote Link to comment Share on other sites More sharing options...
s4dreamer Posted December 1, 2003 Report Share Posted December 1, 2003 You must've found the same websites as me when I was looking for something similar last month I assume that lbft/sec etc is a derived measurement which is useful for converting to other units, and I'm pretty sure I've heard lbft/sec quoted before, although I can't remember in what context. IIRC, 1Nm of torque indicates the amount of turning effort gained when a weight of 1Newton is placed on a (weightless) bar 1meter from the centre of rotation. Thus, you could possibly say that 1Nm/sec is continuous application of 1Nm of torque for a second (you are turning something). Not sure how useful that is though. Of course, this could all be BS - maybe a mech eng can come and enlighten us Quote Link to comment Share on other sites More sharing options...
shao_khan Posted December 1, 2003 Author Report Share Posted December 1, 2003 Right I found one that says: 1Lbfoot = 1.3558... Is this right? Quote Link to comment Share on other sites More sharing options...
gambba Posted December 1, 2003 Report Share Posted December 1, 2003 Yes it is Chris. Drop me a PM if you want me to e-mail you a conversion program which can do this sort of stuff easily. Quote Link to comment Share on other sites More sharing options...
AshA3T Posted December 1, 2003 Report Share Posted December 1, 2003 This probably sounds a bit crass but as a general guide for converting Newton Meters to Pounds per Foot, I find that Pounds per Foot is roughly 74% of Nm. But you probably need more exact conversions! Quote Link to comment Share on other sites More sharing options...
shao_khan Posted December 1, 2003 Author Report Share Posted December 1, 2003 Thanks mate, got a program now and you are right as well, if you have a couple of decimal place less 73.75610331754952722337773450753% Although the above is not entirely accurate, but the 74% is an nice easy way to remember. Quote Link to comment Share on other sites More sharing options...
shao_khan Posted December 1, 2003 Author Report Share Posted December 1, 2003 Oh and while on the subject - why cant any web sites just say - Oh its about 74%, took me bl00dy ages to find one, but if instead of being all scientific they gave you a dummies guide I'd have done it ages ago - Good job we got tyresmoke to rely on. Quote Link to comment Share on other sites More sharing options...
AshA3T Posted December 1, 2003 Report Share Posted December 1, 2003 I'm glad my best guess want too far out! Trouble is it comes from being a bit sad and working out the differences between different road tests in different car mags of the same vehicles. Quote Link to comment Share on other sites More sharing options...
s4dreamer Posted December 1, 2003 Report Share Posted December 1, 2003 That's the way I do it too Ash Quote Link to comment Share on other sites More sharing options...
Sven Posted December 1, 2003 Report Share Posted December 1, 2003 Maybe this is a handy site: Measurements Units Conversion Quote Link to comment Share on other sites More sharing options...
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