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How many turns?

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How many turns?

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flag jonty4
Posted: Jan 1, 2011 at 8:15 Quote
This may sound like a dumbass question but how many rotations of an Allen key is one nm? Thanks, jonty
flag tr94
FL
Posted: Jan 1, 2011 at 8:42 Quote
Nm... is a measurement of force. Therefore its not how many turns but how much force it takes to turn
flag GenericName
Posted: Jan 1, 2011 at 8:48 Quote
Edit: looks like i was beaten to it, but nevermind...

Nm (Newton Meter) is a force, or more specifically a unit of torque, rather than a sumber of turns. It is the equivalent of applying a force of one newton to a lever one meter long.

A newton is, in simple terms, the force of gravity acting on a mass of approx 100g - this obviously only applies on earth, but thats all you really need to concern yourself with.

If you need to tighten something to 1Nm, and you're too pikey to buy a torque wrench, I suppose you could fashion a 1m long lever for your allen key, hold it horizontally, and hang a 100g weight off the end. This is pretty imprecise, but should do the job if youre bothered.

Alternatively, just do it finger tight with the small end of the allen key, then pinch it up with the big end. 1Nm, is nearer "not too tight" than "I need a longer allen key"
flag jonty4
Posted: Jan 1, 2011 at 9:08 Quote
GenericName wrote:
Edit: looks like i was beaten to it, but nevermind...

Nm (Newton Meter) is a force, or more specifically a unit of torque, rather than a sumber of turns. It is the equivalent of applying a force of one newton to a lever one meter long.

A newton is, in simple terms, the force of gravity acting on a mass of approx 100g - this obviously only applies on earth, but thats all you really need to concern yourself with.

If you need to tighten something to 1Nm, and you're too pikey to buy a torque wrench, I suppose you could fashion a 1m long lever for your allen key, hold it horizontally, and hang a 100g weight off the end. This is pretty imprecise, but should do the job if youre bothered.

Alternatively, just do it finger tight with the small end of the allen key, then pinch it up with the big end. 1Nm, is nearer "not too tight" than "I need a longer allen key"
Thanks and FYI i spent all the money i have on a full drivetrain and bars/grips so i can't afford a torque wrench atm.
flag GenericName
Posted: Jan 1, 2011 at 9:30 Quote
Yeah, torque wrenches are actually quite expensive, I've never bothered with one and not hand anything come loose on me yet. After a while you get a feel for how tight things need to be
flag jonty4
Posted: Jan 1, 2011 at 10:49 Quote
GenericName wrote:
Yeah, torque wrenches are actually quite expensive, I've never bothered with one and not hand anything come loose on me yet. After a while you get a feel for how tight things need to be
Thanks for the advice and btw I wasn't meant to sound nasty in my last post sorry mate.
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