[rant] What the Hell is Pound-feet?

[Beerhippie]

I own some torque wrenches--not as many as y'all, but as many as I need. They're calibrated in Foot-Pounds:








I don't see no Pound-Feet there, and that's about eighty years of tools.

Pound-Feet sounds like what I do when caught with another man's wife--and he's armed.

Seems I just started hearing and seeing it in the last decade or so. Did I miss the memo? Is Foot-Pounds somehow offensive to feet?

[/rant]

 

[no704]

It’s a carry over from science. Ask anyone that has been thru engineering classes and it will be lb ft.

 

[joecon]

It is to bring us in line with metric thought, Newton meters = pound foot.

 

[Steve_P]

The definition of torque is force times distance. LBF - FT. Or similar. Not distance times torque. We don't extend the same torque wrench, we apply more force.

I've never heard anyone say meter newtons. But America makes up its own ****.

 

[908Jim]

It’s a carry over from science. Ask anyone that has been thru engineering classes and it will be lb ft.

It is to bring us in line with metric thought, Newton meters = pound foot.

Ft lbf is a unit of work. Feet x Lb force.


We all say ft lbs because its easier to say and commutative property still makes it technically correct.

 

[Old Man Roger]

The way I always thought of it, was to imagine a 1 foot long breaker bar, with a pound of weight applied. That would be 1 pound feet of torque.

 

[FrankLee]

and multiply by 12 for pound inches.

 

[Rusted Nut]

Before Briton adopted the metric system in the ‘60’s, they referred to torque values as “pound-feet”; seen it as that in old British bike service manuals.

 

[rancherbill]

Seems I just started hearing and seeing it in the last decade or so. Did I mess the memo? Is Foot-Pounds somehow offensive to feet?

[/rant]

You didn't miss the memo, people having been saying it wrong all along. I learned it wrong from my shop teacher.

Now you know.

 

[WildBill]

Its like my bi-weekly paycheck that I get twice a month, not twice a week. **** backwards.

 

[Beerhippie]

It’s a carry over from science. Ask anyone that has been thru engineering classes and it will be lb ft.

Well, let's see... I studied Engineering, Botany and field Biology in college back in the eighties... Foot-pounds.

My first Engineering prof would have hissy-fits if you mistook torque for moment, but never had a problem with foot-pounds.

Science, BTW, uses Metric.

 

[Old Man Roger]

You didn't miss the memo, people having been saying it wrong all along. I learned it wrong from my shop teacher.

Now you know.

Oh I missed the actual point of the thread.lol Ya, Ive never even considered there was difference between pound feet and foot pounds.

 

[nadogail]

When I was a id it was Foot Pounds, a one foot lever with a pound of weight attached.

The English Language is constantly evolving, Custodians used to be Janitors, Letter Carriers used to be Mail Men, and *** Worker is now appropriate for a practitioner of the worlds oldest profession.

 

[PelicanPines]

I'm staying quiet...

 

[Beerhippie]

Before Briton adopted the metric system in the ‘60’s, they referred to torque values as “pound-feet”; seen it as that in old British bike service manuals.

I'll start saying "pound-feet" when I learn to hold my pinkie out while have my two-o'clock tea!

And saying that things differ to instead of differ from.

 

[LXCam]

I’m with you OP, I refuse to acknowledge this abomination of supposed terminology correctness.

 

[danielbuck]

I'm glad none of this bothers me.

 

[Beerhippie]

I’m with you OP, I refuse to acknowledge this abomination of supposed terminology correctness.

Let's all say it together... one, two, three

GET OFF MY LAWN!

 

[dnschmidt]

I use Newton-meters (N-m) like the rest of the civilized world does. Worse yet when I adopted True 32 method for building cabinets I used purely metric tape measures. TAKE THAT.

 

[Beerhippie]

I use Newton-meters (N-m) like the rest of the civilized world does. Worse yet when I adopted True 32 method for building cabinets I used purely metric tape measures. TAKE THAT.

We built ourselves--or borrowed, anyway--a system of WEIGHTS and measures--not masses, forces and measures. No need to account for the force of gravity when it's the about same everywhere--unless you really are a rocket scientist.

PS: See above--I can speeka' da' Metric, too--and I won't be telling you all to say Meter-Newtons.

 

[Beerhippie]

It’s a carry over from science. Ask anyone that has been thru engineering classes and it will be lb ft.

PPS: Those torque wrench values were written by... ENGINEERS!

 

[LXCam]

I use Newton-meters (N-m) like the rest of the civilized world does. Worse yet when I adopted True 32 method for building cabinets I used purely metric tape measures. TAKE THAT.

Ya know what Denny, you’re welcome to take all those 25.4mms and shove it straight up your….

 

[PelicanPines]

Ok i'll say it... pound feet vs foot pound... worrying which to use sounds like a fetish.

Now... there are inch pounds but NO inch toes... does that bother you liked it does me?... asking for a friend.

 

[Beerhippie]

Ok i'll say it... pound feet vs foot pound... worrying which to use sounds like a fetish.

Now... there are inch pounds but NO inch toes... does that bother you liked it does me?... asking for a friend.

Let me find that old measuring stick that's graduated in cubits and barleycorns....

 

[Wiz02]

I use Newton-meters (N-m) like the rest of the civilized world does. Worse yet when I adopted True 32 method for building cabinets I used purely metric tape measures. TAKE THAT.

It's Un-American, I tell you. How dare you change your measurement system to match the rest of the world. For shame.

 

[LXCam]

Let me find that old measuring stick that's graduated in barleycorns....

Threatening him with a good time ain’t gonna work

 

[Beerhippie]

It's Un-American, I tell you. How dare you change your measurement system to match the rest of the world. For shame.

Yeah, we use FREEDOM measurements!

 

[KnurledNut]

Mechanics 101:
If tightening by hand, there's two choices, (1) leave it slightly loose or (2) turn it until you hear the crack and back an eighth of a turn.
If tightening by gun, one ugga-dugga is good. Two is tight. Three is good and tight.
Anything beyond that is machinist or engineer territory. Tread lightly.

 

[pizza]

i understand the argument of ft·lbf and lbf·ft meaning different things, but as someone steeped in science, my opinion is that it does not matter.

although torque, work, gravitational potential energy, etc are different concepts expressed by different formulas, they are dimensionally equivalent, and the multiplication operator is commutative.

ft·lbf and lbf·ft are the same thing. sorry, guys. i don't respect that convention.

fwiw: for torque, i usually write lbf·ft and say "foot pounds"

 

[pizza]

the real sin is **** like ft/lb. that's some real ignorance right there

https://www.garagejournal.com/forum/threads/confidence-in-precision-tools.527191/

Search results for query: ft/lb

www.garagejournal.com

 

[steel 35]

I have stopped a few people doing foot pound's;
When a guy is down dam!

 

[jayemm]

the real sin is **** like ft/lb. that's some real ignorance right there

https://www.garagejournal.com/forum/threads/confidence-in-precision-tools.527191/

Search results for query: ft/lb

www.garagejournal.com

Yes and that ignorance is repeated. Usually by some dweeb who has never torqued anything more than the pencil in his cubicle.

 

[dchawk81]

I own some torque wrenches--not as many as y'all, but as many as I need. They're calibrated in Foot-Pounds:








I don't see no Pound-Feet there, and that's about eighty years of tools.

Pound-Feet sounds like what I do when caught with another man's wife--and he's armed.

Seems I just started hearing and seeing it in the last decade or so. Did I miss the memo? Is Foot-Pounds somehow offensive to feet?

[/rant]

Can't believe you don't know what pound feet of twerk is.

 

[dchawk81]

Ok i'll say it... pound feet vs foot pound... worrying which to use sounds like a fetish.

Now... there are inch pounds but NO inch toes... does that bother you liked it does me?... asking for a friend.

You obviously have a foot pounds fetish.

 

[PelicanPines]

You obviously have a foot pounds fetish.

More toes than feet...

 

[Black300zx]

Could be worse....could be someone saying "pounds of pressure"

 

[dchawk81]

Could be worse....could be someone saying "pounds of pressure"

I prefer the phrase "gray hairs of pressure."

 

[Steve_P]

Well, let's see... I studied Engineering, Botany and field Biology in college back in the eighties... Foot-pounds.

My first Engineering prof would have hissy-fits if you mistook torque for moment, but never had a problem with foot-pounds.

Science, BTW, uses Metric.

If you actually studied mechanical engineering, like you attempted to get a BSME, made it thru your second year and then gave up, get your statics and dynamics book out. And tell us the definition of torque. It's force times distance. T=FxD. Or FxS. Period. Has been forever. In every book. You want to argue but you're just being ridiculous. Get your BSME and then get back to us.

 

[Junkdrawer Dog]

I thought foot-pounds was when you put your foot on the breaker bar?

 

[dchawk81]

If you actually studied mechanical engineering, like you attempted to get a BSME, made it thru your second year and then gave up, get your statics and dynamics book out. And tell us the definition of torque. It's force times distance. T=FxD. Or FxS. Period. Has been forever. In every book. You want to argue but you're just being ridiculous. Get your BSME and then get back to us.

It doesn't matter since it's a certain amount of force at a given length.

A 3 foot breaker bar with 100 pounds exerted on it is the same as a 1 foot breaker bar with 300 pounds exerted on it.

Footxpound = poundxfoot.

That's literally how leverage works.

You're arguing that force x distance isn't the same as distance x force.