Palaeodom Posted October 15, 2010 Posted October 15, 2010 Saw the recent thread on buying a torque wrench, I'm not in the financial position to spend a grand on a torque wrench so for those like me out there... what is 6Nm in terms of when we stop tightening? I understand the concept of Newton Metres but how on earth do i know if i've gone to far?
Mojoman Posted October 15, 2010 Posted October 15, 2010 Saw the recent thread on buying a torque wrench, I'm not in the financial position to spend a grand on a torque wrench so for those like me out there... what is 6Nm in terms of when we stop tightening? I understand the concept of Newton Metres but how on earth do i know if i've gone to far?When it breaks! If you have a heavy hand I would suggest not trying to torque something by feel!
Caerus Posted October 15, 2010 Posted October 15, 2010 Saw the recent thread on buying a torque wrench, I'm not in the financial position to spend a grand on a torque wrench so for those like me out there... what is 6Nm in terms of when we stop tightening? I understand the concept of Newton Metres but how on earth do i know if i've gone to far? Im sure CWC sells them for R600, Christmas is around the corner
The Guy in Pink Posted October 15, 2010 Posted October 15, 2010 what is 6Nm in terms of when we stop tightening? I understand the concept of Newton Metres but how on earth do i know if i've gone to far? A Newton is the force exerted by gravity on a very large apple. A Newton Metre is the torque exerted on your shoulder by holding that apple at arm's lenght from the shoulder.. Hold six apples at arm lenght and see what it feels like, now torque the bolt holding the spanenr at arms length and feel the difference.
fandacious Posted October 15, 2010 Posted October 15, 2010 Saw the recent thread on buying a torque wrench, I'm not in the financial position to spend a grand on a torque wrench so for those like me out there... what is 6Nm in terms of when we stop tightening? I understand the concept of Newton Metres but how on earth do i know if i've gone to far? turn it till it strips, then one turn back
TiBones Posted October 15, 2010 Posted October 15, 2010 You tighten till it strips then one half turn back! Simple
anthemboy Posted October 15, 2010 Posted October 15, 2010 Depends on the length of the spanner/wrench as well. 6Nm is not much.
Minion Posted October 15, 2010 Posted October 15, 2010 what is 6Nm in terms of when we stop tightening? I understand the concept of Newton Metres but how on earth do i know if i've gone to far?It's a bit difficult to describe. You really need to know how it feels. I would suggest finding someone with torque wrench (LBS, buddy etc.) and asking if you play around with it. Set it to 6N.m and clamp the socket in a vice. Pull on it a couple of times to get a feel for how much force you need to exert to get it to click.
LeTurbo Posted October 15, 2010 Posted October 15, 2010 R1000 for a torque wrench? Gold-plated? C'mon, I'm sure I've seen them in hardware stores for much, much less. Or try Midas.Or Gumtree - a quick look just found 3 for R450 each, on average.
Tankman Posted October 15, 2010 Posted October 15, 2010 turn it till it strips, then one turn back that is what they teach you in the army
Johan Bornman Posted October 15, 2010 Posted October 15, 2010 6NM is about as much as you tighten a tap with a slightly leaking washer. A good tap would take 2nm to close. Just remember to take the length of your lever into account. The longer the lever, the stronger you are. Be gentle.
rudi-h Posted October 15, 2010 Posted October 15, 2010 no way to judge. Even guys that pretend to have a "feel" for it, would probably over or under tighten by 50% or more on average. Get a torque wrench or just guess like the rest of us. It's pretty hard to screw it up too bad, have only once stripped a seat post clamp, otherwise had pretty good luck by guessing so far
geoff.rich Posted October 15, 2010 Posted October 15, 2010 BBB torque wrench on CWC http://www.cwcycles.co.za/catalog/parts/tools-torque
Tieffels Posted October 15, 2010 Posted October 15, 2010 (edited) torque = force x distance.6 Nm = applying 6N perpendicular to a 1m long lever6N = 600g of mass hanging down. Generically, hang a mass M (kg) on the end of a horizontal lever length X (m) calculated from : 6Nm = M*10*X Easy peasy Edited October 15, 2010 by chickenrun4me
Guest Big H Posted October 15, 2010 Posted October 15, 2010 (edited) torque = force x distance.6 Nm = applying 6N perpendicular to a 1m long lever6N = 600g of mass hanging down. Generically, hang a mass M (kg) on the end of a horizontal lever length X (m) calculated from : 6Nm = M*10 9,81 *X Easy peasy Edited October 15, 2010 by Big H
Gman1834 Posted October 15, 2010 Posted October 15, 2010 (edited) 6NM is about as much as you tighten a tap with a slightly leaking washer. A good tap would take 2nm to close. Just remember to take the length of your lever into account. The longer the lever, the stronger you are. Be gentle. So if you have a long "lever" you should be very strong........ Edited October 15, 2010 by Gman1834
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