One of you physicists

[Big Dave]

Max. Power Output 87kW /5,500 rpm
Max. Torque 167Nm/4,000 rpm


convert that to old-speak for me please.

[R6_kid]

use google calculator...

"C'MON DAVE!!!"

[ukbandit]

i found this bit 87kw = 116.67 hp
167Nm = 123.16 foot pounds
nowt about the rpm bit, maybe it means that is its peak output

[Big Dave]

use google calculator...

"C'MON DAVE!!!"

If it wasn't for haters there would be Less clicks this way.:Pokey:

[Big Dave]

i found this bit 87kw = 116.67 hp
167Nm = 123.16 foot pounds

Taa - wot I wanted.

[Mikkel]

Max. Power Output 87kW /5,500 rpm
Max. Torque 167Nm/4,000 rpm


convert that to old-speak for me please.

You looking to buy a diesel powered car?

[Big Dave]

You looking to buy a diesel powered car?

Goldwing numbers

[avgas]

Goldwing numbers
Before or after transmission.....

[Big Dave]

Before or after transmission.....

Factory .pdf - would be at the crank.

[Mikkel]

Goldwing numbers

Well, at least I was close ;)

:rofl:

[Big Dave]

....not even.

[Mikkel]

Oh, don't get me wrong:
http://www.youtube.com/watch?v=kFleFrJx7nw

After all - this is diesel powered:
http://www.totalmotorsport.com/Features/Cars/Storage/Audi-R10-Fside-2006.jpg

[Big Dave]

Funny how the yanks spank on endlessly about that road and it looks pretty much like ordinary sports riding around here.

[Mikkel]

Funny how the yanks spank on endlessly about that road and it looks pretty much like ordinary sports riding around here.

Yeah, we are truly spoiled :yes:

Especially seeing as big roadtrains negotiate (and the word negotiate is chosen carefully here) that particular road. Scary to watch.

Although I suspect the road surface might be a bit better than what we're used to.

[imdying]

Haven't seen the video, but I'm picking the Dragon? Yeah, those trucks are big time scary on that road!

[The Stranger]

i found this bit 87kw = 116.67 hp
167Nm = 123.16 foot pounds
nowt about the rpm bit, maybe it means that is its peak output

Peak power is developed at 5,500 rpm
Peak torque is developed at 4,000 rpm

[peasea]

i found this bit 87kw = 116.67 hp
167Nm = 123.16 foot pounds
nowt about the rpm bit, maybe it means that is its peak output

Foot pounds?
Pounds feet.


"To calculate torque, you just multiply the force by the distance from the center. In the case of a large nut, if the spanner you use is a foot long, and you put 200 pounds of force on it, you are generating 200 pounds-feet of torque. If you use a 2-foot spanner, you only need to put 100 pounds of force on it to generate the same torque."

Pounds feet..........

[Forest]

Foot pounds?
Pounds feet.


"To calculate torque, you just multiply the force by the distance from the center. In the case of a large nut, if the spanner you use is a foot long, and you put 200 pounds of force on it, you are generating 200 pounds-feet of torque. If you use a 2-foot spanner, you only need to put 100 pounds of force on it to generate the same torque."

Pounds feet..........

Multiplication is a commutative (http://en.wikipedia.org/wiki/Commutative) operation.

distance x force = force x distance

[dipshit]

Funny how the yanks spank on endlessly about that road and it looks pretty much like ordinary sports riding around here.

Americans spank on endlessly about anything American. That's why they are called 'Yanks'.

[Big Dave]

Americans spank on endlessly about anything American. That's why they are called 'Yanks'.

I haven't sought any olympic coverage yet dippy - but what I haven't been able to avoid has featured absurd breast beating histrionics - both in meat and cyberspace.

The only thing worse than a bad loser is a bad winner.

I was ashamed of some members of the Australian Cricket team for a while - because they had become such bad and snarley winners. Of course the whiney Indians still say they are.

However they don't hold a candle to Oncle Sam's kiddies.

You ever watch college sport? When they hold the camera in the crowd. Scary shit.

[scracha]

Max. Power Output 87kW /5,500 rpm
Max. Torque 167Nm/4,000 rpm

convert that to old-speak for me please.
Is this a hardware or a software problem.

Sorry...that's mechanical engineering not physics.

[Big Dave]

Is this a hardware or a software problem.

Sorry...that's mechanical engineering not physics.

Complicated by semantics.

My OS dictionary says

physics |ˈfiziks|
plural noun [treated as sing. ]
the branch of science concerned with the nature and properties of matter and energy.

The quantification of power output would qualify surely?

[Ocean1]

Foot pounds?
Pounds feet.


"To calculate torque, you just multiply the force by the distance from the center. In the case of a large nut, if the spanner you use is a foot long, and you put 200 pounds of force on it, you are generating 200 pounds-feet of torque. If you use a 2-foot spanner, you only need to put 100 pounds of force on it to generate the same torque."

Pounds feet..........


Multiplication is a commutative (http://en.wikipedia.org/wiki/Commutative) operation.

distance x force = force x distance

Pounds Foot if you please.

The variable is pounds, not feet, there's no provision in the standard unit for more than one of 'em.

Ffs, next it'll be "foots".

[peasea]

Multiplication is a commutative (http://en.wikipedia.org/wiki/Commutative) operation.

distance x force = force x distance

Fine, but it's still pounds feet. (Foot, whatever, but POUNDS come(s) first.

[peasea]

Pounds Foot if you please.

The variable is pounds, not feet, there's no provision in the standard unit for more than one of 'em.

Ffs, next it'll be "foots".

Or peet founds, perhaps?

Now, let's go metric, shall we?
Mewton Netres.

[scracha]

Complicated by semantics.

My OS dictionary says

physics |ˈfiziks|
plural noun [treated as sing. ]
the branch of science concerned with the nature and properties of matter and energy.

The quantification of power output would qualify surely?

Nature, properties of matter and energy. Umm...so that's basically the building blocks of the whole universe. Glad I switched to Computer Science after a couple of years, otherwise I'd have to solve everyone's problems.

Anyway, real scientists scoff at people not using the metric system.

[Ocean1]

Glad I switched to Computer Science after a couple of years

Probably wouldn't be difficult to find a physicist or two quite chuffed about it too.


Anyway, real scientists scoff at people not using the metric system.

Fuck ‘em. I’ve got a good handle on what a pound does on the end of a foot long lever. Fuck knows what a Newton is…

[scracha]

Probably wouldn't be difficult to find a physicist or two quite chuffed about it too.

Fuck yeah...brainy dudes mate. By the 2nd year I'd had more mathematics than I could handle.

[Mikkel]

Multiplication is a commutative (http://en.wikipedia.org/wiki/Commutative) operation.

distance x force = force x distance

While multiplication may be commutative - the vector product (x) is not.

In this case - distance (taken from the centre to the circumference) and force being vectors - the following is true:

distance x force = -force x distance

Not to throw a spanner in the works - but one valid objection towards the Imperial (lb-ft) units compared to metric (Nm) units is the fact that if the gravitational acceleration changes between to locations the Imperial unit changes - where as the metric unit will remain constant.
As such I couldn't possibly care one way or the other if you want to call it foot-pounds or pounds-foot... they are both obsolete. Newton-meter is the unit I'll stick to.

[Ocean1]

one valid objection towards the Imperial (lb-ft) units compared to metric (Nm) units is the fact that if the gravitational acceleration changes between to locations the Imperial unit changes

Except lbs/ft ain't correct. :spanking:

Might be common shorthand, but the proper unit is lbf·ft :niceone:

[Mikkel]

Except lbs/ft ain't correct. :spanking:

Might be common shorthand, but the proper unit is lbf·ft :niceone:

As I said - Imperial units, I couldn't possibly care less...

[Forest]

While multiplication may be commutative - the vector product (x) is not.

In this case - distance (taken from the centre to the circumference) and force being vectors - the following is true:

distance x force = -force x distance


Yes that is true. Though if your engine is rotating backwards, you've likely got bigger problems than the orientation of the torque vector.

[Whynot]

Fuck knows what a Newton is…

About 9.81kgs at sea level ...

[Forest]

About 9.81kgs at sea level ...

I think a weight of 1kg would generate a force of 9.81N under the earth's gravity.

So 1N = 1 / 9.81 = 0.102 kg

About the same as a small apple!

[Mikkel]

1 Newton is the force required to accelerate 1 kg to a speed of 1 m/s inside the timespan of 1 second.

Just like 1 Joule is the energy required to exert a force of 1 Newton over the distance of 1 meter.

And that is the beauty of the SI units (metric if you will) that you do not, generally, need any conversion factors in your equations.

[Bass]

Putting it in everyday terms - a Newton is roughly the force required to close a matchbox

[avgas]

In this case - distance (taken from the centre to the circumference) and force being vectors - the following is true:

distance x force = -force x distance
Funny thing was i had the same argument with a physics lecturer once, he said i was both wrong and right.
His argument stated that common sense (not physics) states that distance can also be a vector. As distance quite often is in relation to a position/destination.
It sadly made sense, as you never say to someone - walk 5 meters away, you always tell them "walk over there" or more specifically "walk 5 meters away from me in that direction".
He then told us not to remember this at exam time as he would fail us.
Goes to show that maths and theory sometimes make a horrible couple.
I found it ironic that we use this maths in dynamic systems however because a=-a in some circumstances just for the maths to work.

[Fooman]

Not to throw a spanner in the works - but one valid objection towards the Imperial (lb-ft) units compared to metric (Nm) units is the fact that if the gravitational acceleration changes between to locations the Imperial unit changes - where as the metric unit will remain constant.

Ahh, you have yet to be exposed to the imperial unit known as lbf (pound-force) Tis the equivalent of the newton (and is currently defined as a multiple of the newton). The mass unit derived from the lbf is amusingly known as the slug (with derivatives known as the slinch (slug-inch) = 12 slugs), although the pound mass (lbm) is more commonly used - and the change in weight force from a lbm in the gravitational field is what you are discussing.

Cheers,
FM

[MisterD]

Is this a hardware or a software problem.

Sorry...that's mechanical engineering not physics.

Meh. Everything is a branch of physics.

[The Stranger]

So does any of this pedantic bullshit shit about pounds feet or foot pounds feets pounds change the performance of the bike?

No such thing as a simple question on KB is there?

Get out and ride for fucks sake!

[Mikkel]

Funny thing was i had the same argument with a physics lecturer once, he said i was both wrong and right.
His argument stated that common sense (not physics) states that distance can also be a vector. As distance quite often is in relation to a position/destination.
It sadly made sense, as you never say to someone - walk 5 meters away, you always tell them "walk over there" or more specifically "walk 5 meters away from me in that direction".
He then told us not to remember this at exam time as he would fail us.
Goes to show that maths and theory sometimes make a horrible couple.
I found it ironic that we use this maths in dynamic systems however because a=-a in some circumstances just for the maths to work.

I'm not sure if I follow what you are saying here.

However, the vector calculus is complete and describes all classical mechanical systems completely. Any spatial position will be described by a vector - and any change in position will be described as a vector that is the difference between the two position vectors.

Of course, it is often easier to just forget about the vectors and just work with the scalars. However, if you want the problem and solution defined with absolute clarity vectors are the go.


Ahh, you have yet to be exposed to the imperial unit known as lbf (pound-force) Tis the equivalent of the newton (and is currently defined as a multiple of the newton). The mass unit derived from the lbf is amusingly known as the slug (with derivatives known as the slinch (slug-inch) = 12 slugs), although the pound mass (lbm) is more commonly used - and the change in weight force from a lbm in the gravitational field is what you are discussing.

Next we'll be talking about poles, stones and farthlings - I'm quite serious when I say I have no time for the imperial units. The imperial units were awesome in a world where there were no calculators, computers, etc. - however today they are absolete.


Meh. Everything is a branch of physics.

...or psychology, it really depends upon what your perspective is. (Personally I agree with you though.)

[jrandom]

... today they are absolete.

... but the need for automated spelling checkers will endure, yea, even unto eternity?

:laugh:


Meh. Everything is a branch of physics.

<img src="http://imgs.xkcd.com/comics/purity.png"/>

[MisterD]

Youdaman for the cartoons entcha.

As the truism has it, when you get to university:-

Biology becomes Chemistry
Chemistry becomes Physics
Physics becomes Mathematics
and Mathematics....becomes f-ing impossible.

[Mikkel]

Well, you know what they say - mathematics are to physics what masturbation is to sex...

[Big Dave]

......................

[vifferman]

Now, let's go metric, shall we?
Mewton Netres.
That's Mutant Eaters. :Pokey:
It's very important to get names right, otherwise the whole thing loses its mojo.

[southernmike]

Oh, don't get me wrong:
[VIDEO CLIP]


I still can't understand why people ride with their heads over the centreline. I guess I was put off when a girl was decapitated near where I lived by a passing truck while riding her motorbike on a narrow road (the road from Long Bay College going down the hill).

[Ixion]

Not to fear. You can now take a MM (Master of Magic) at Massey University

true (http://www.nzherald.co.nz/section/1/story.cfm?c_id=1&objectid=10526795)!