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Torque - What is it exactly??

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WalkeruK88
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Joined: 11 Apr 2005
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PostPosted: 22:16 - 26 May 2005    Post subject: Reply with quote

torque = how much it will pull no matter the conditions in offroading anyway e.g. a 4 stroke at the bottom of a vertical hill will climb it , yet a 2 stroke isnt torquey and needs a run up
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m99dws
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PostPosted: 22:20 - 26 May 2005    Post subject: Reply with quote

Jonboy wrote:
But that's my whole point - i'm defending horsepower - torque is overrated Mr. Green


Horsepower is what sells cars, Torque is what wins races Thumbs Up
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jonboy
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PostPosted: 23:05 - 26 May 2005    Post subject: Reply with quote

m99dws wrote:
Jonboy wrote:
But that's my whole point - i'm defending horsepower - torque is overrated Mr. Green


Horsepower is what sells cars, Torque is what wins races Thumbs Up


So why are F1 cars tuned to be high revving high horsepower motors at the expense of torque?
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lilredmachine
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PostPosted: 23:08 - 26 May 2005    Post subject: Reply with quote

What is currently doing well and has run the most races in F1? The Renault F1 motor, which has more torque than the others.
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BLOFLY 636
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PostPosted: 01:41 - 27 May 2005    Post subject: Reply with quote

plus an F1 car weighs very little and has a good power to weight ratio from design and are geared to run at high RPM everywhere I was always told that POWER is TORQUE multiplied by REVS and in relation TORQUE is POWER divided by REVS thats a rough relation to how it works
In practice my uncle has a Ducati Monster 1000S and I can't catch him away from the lights but at say 50-100 meters down the road when the revs have really started producing more power and the torque that the engine produces starts to build with the revs I can pass him but I have to get a good drag start with the clutch slipping for a few meters and the engine screaming where as he can just jump away in a heartbeat and wheelie from 0kmph! thats pretty awesome I think Surprised I like seeing a bike take off from dead start and loft the wheel instantly with out the engine screaming Clapping
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Suzuki
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PostPosted: 08:23 - 27 May 2005    Post subject: Reply with quote

Torque is a measure of "turning force". Usually measured in lb/ft. (or pounds per foot).

For an example, imagine your socket set. If it's a decent one you'll probably have a socket wrench with a long handle and one with a short one. Which is easier to undo a tight nut with? The long one... because it enables you to put more torque (or turning force) on the nut.

So, if you apply 50lbs of pressure to a hypothetical spanner a foot long, it'll be 50lb/ft of torque. Double the spanner to 2 ft, with the same pressure applied, and you have 100lb/ft of torque, making things turn much easier.

Now forget about spanners, and imagine your engine turning your wheel through the chain. The amount of torque produced is dependant on the power of the engine, along with the ratio's in the gearbox, the size of the sprockets, the size of the wheel, etc. The resultant turning force is the torque.

Stick a bigger sprocket on the back, and you have more torque (just like having a longer spanner). More torque = wheelies btw.

Mr. Green
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Gracie Jones
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PostPosted: 14:36 - 27 May 2005    Post subject: Reply with quote

BLOFLY 636 wrote:
I was always told that POWER is TORQUE multiplied by REVS and in relation TORQUE is POWER divided by REVS thats a rough relation to how it works


And that explains why twins make less power than the same sized four - because a four can rev higher - but produce more torque.

Lots of little bangs produce less torque than two big ones, but because they can produce that torque much more often, they produce more power.

Quote:
So, if you apply 50lbs of pressure to a hypothetical spanner a foot long, it'll be 50lb/ft of torque. Double the spanner to 2 ft, with the same pressure applied, and you have 100lb/ft of torque, making things turn much easier.


And that is why twins rev lower than fours - it takes you longer to move the long wrench up and down than it does the short wrench.
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shellshock
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Joined: 25 Jul 2004
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PostPosted: 14:41 - 27 May 2005    Post subject: Re: Torque - What is it exactly?? Reply with quote

ash t wrote:
im too embarrased to ask what it is..but ... what is it??


Hmmm, your too embarrased to ask one of your mates, yet you open it up to a whole forum, quite a few of which you'll be meeting very soon Laughing
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ash t
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PostPosted: 16:53 - 27 May 2005    Post subject: Reply with quote

Its very easy to speak through a keyboard though..you dont have to look etc!

And shellshock, i didnt ask you because i knew you wouldnt know Razz

JK, u probably do know...but never mind
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TheShaggyDA
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PostPosted: 16:59 - 27 May 2005    Post subject: Reply with quote

ash t wrote:
As i had driving lessons in a deisel i realise what you meanas you could set off with no accelerator..just careful clutch control


You can do the same in a petrol engined car, diesel just makes it easier. My dad used to be a driving instructor, and when he switched to a 1.6 diesel Fiesta from a 1.3 petrol Metro, he said the number of pupils stalling the car dropped significantly. Saying that, my first drive in it and I stalled it 3 times Doh!
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