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Interesting Power to Weight Ratio Calculations!!!

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Lillee

Post subject: Interesting Power to Weight Ratio Calculations!!!

Posted: Wed Apr 13, 2005 5:20 pm

1360cc

Joined: Tue Jun 01, 2004 3:41 pm
Posts: 6858
Location: Special Tuning Sydney

Just got bored at work and thought I'd calculate what power to weight ratio a 110hp mini was against more modern cars. what i found openned my eyes :shock:

These are rough figures, but pretty close using Drive.com.au's specs of each vehicle measured in Horsepower:Pounds

Lillee 46hp(?) 650kg = 0.032 Go Lillee!!!
Dr Mini's Mini Haha 115hp, 650kg = 0.080

Holden's new Commodore with alloytech V6 175KW = 0.066
2005 Holden Commodore SS = 0.089 Not bad! Pretty close I'd say!
Nissan Pulsar N15 SSS = 0.053 :lol:

Toyota Echo Sportivo 1.5L 80KW = 0.035 :lol:

Nissan Sylvia 200SX S15 = 0.067 :shock:

Go Haha!!!

So here's the clincher:
Brad’s Gold Rocket Launcher approx 160hp 720kg = 0.108 :shock:

EDIT: Upon Brad's request, 190 Crank HP = 0.1197 !!! That would also mean Mini Hahas calculation is wrong too has 115 is at the wheels, plus since Haha is now a bigger motor, 120hp? 125hp?

2002 Porshe 996 Carrera 235KW = 0.099

Well done Brad! omg it's a beast!!! :shock:

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Last edited by Lillee on Thu Apr 14, 2005 10:20 am, edited 2 times in total.

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Zizzle

Post subject:

Posted: Wed Apr 13, 2005 5:31 pm

1098cc

Joined: Fri Nov 26, 2004 7:07 pm
Posts: 1647
Location: New York City

What about the 350HP Starlet that Brad posts about over here:

http://www.ausmini.com/forums/viewtopic.php?t=6323&start=30

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68matic

Post subject:

Posted: Wed Apr 13, 2005 5:33 pm

1275cc

Joined: Tue Mar 16, 2004 9:12 pm
Posts: 5038
Location: cabramatta sydney

and if i take Mrmeaner's 21HP matic and apply it to my own:

21HP : 660kg (matic box) = ?[/b]

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Mini Mad

Post subject:

Posted: Wed Apr 13, 2005 5:45 pm

ET 13.457 seconds , OH YEAH !!!!

Joined: Sun Sep 19, 2004 8:35 am
Posts: 7826
Location: Somewhere Around Sydney

68matic wrote:

and if i take Mrmeaner's 21HP matic and apply it to my own:

21HP : 660kg (matic box) = ?[/b]

0.0144

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68matic

Post subject:

Posted: Wed Apr 13, 2005 5:50 pm

1275cc

Joined: Tue Mar 16, 2004 9:12 pm
Posts: 5038
Location: cabramatta sydney

Mini Mad wrote:

21HP : 660kg (matic box) = ?

0.0144 :shock:

hey... why pull all those faces?
:evil:

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68matic

Post subject:

Posted: Wed Apr 13, 2005 5:52 pm

1275cc

Joined: Tue Mar 16, 2004 9:12 pm
Posts: 5038
Location: cabramatta sydney

ive got another one for you:

5KW (6.6HP) : 15Kg Vaccuum cleaner

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Mini Mad

Post subject:

Posted: Wed Apr 13, 2005 5:59 pm

ET 13.457 seconds , OH YEAH !!!!

Joined: Sun Sep 19, 2004 8:35 am
Posts: 7826
Location: Somewhere Around Sydney

Hehe

Ooooo that hoover hoons... 0.2 :shock:

Beat that brad! haha..Hmm Now..how to get that power to the ground..

Calculation is just:

HP / lbs = Power:Weirght

1Kg = 2.2lbs

So for the matic 21HP / 1455lbs = 0.0144

Hoover 6.6HP / 33Kg = 0.2

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benjamin

Post subject:

Posted: Wed Apr 13, 2005 6:04 pm

1098cc

Joined: Sat Feb 05, 2005 9:02 pm
Posts: 1753
Location: Leonay nsw

my old motocross bike kx80

28hp 64kg which is 140.8lbs

so 28/140.8= 0.199

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68matic

Post subject:

Posted: Wed Apr 13, 2005 6:23 pm

1275cc

Joined: Tue Mar 16, 2004 9:12 pm
Posts: 5038
Location: cabramatta sydney

yeh all bikes are crazy in that manner
i guess thats why they have the restrictions
which is good

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13secmini

Post subject:

Posted: Wed Apr 13, 2005 6:54 pm

1275cc

Joined: Sun Mar 21, 2004 10:28 am
Posts: 2452
Location: Wollongong

can you do mine again with 190hp@crank?? it has 160@wheels, the rest of the cars on there are at the crank.

thanks,
brad

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68matic

Post subject:

Posted: Wed Apr 13, 2005 7:00 pm

1275cc

Joined: Tue Mar 16, 2004 9:12 pm
Posts: 5038
Location: cabramatta sydney

with josh's formula
0.12

thats quite hefty
quite.

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miniVan

Post subject:

Posted: Wed Apr 13, 2005 7:09 pm

848cc

Joined: Mon Sep 20, 2004 5:27 pm
Posts: 426
Location: Perth, WA

man hp per pound?? thats silly.. do kW/kg.. we're in australia

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68matic

Post subject:

Posted: Wed Apr 13, 2005 7:18 pm

1275cc

Joined: Tue Mar 16, 2004 9:12 pm
Posts: 5038
Location: cabramatta sydney

yeh mate im all for the SI over the imperial

but we're talking about the mini here
when it was called a motor car, but technically is an 'engine car'
when all the nuts and bolts and spanners and sockets are all imperial
when they had a horse with a bucket of sand to measure engine strength
when miles per gallon rolls off the tongue better than litres per one hundred kilometres

HP figures are bigger than KW so im not complaining :lol:

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miniVan

Post subject:

Posted: Wed Apr 13, 2005 7:28 pm

848cc

Joined: Mon Sep 20, 2004 5:27 pm
Posts: 426
Location: Perth, WA

yeah but pounds are smaller than kilos..

trust me.. 120kw/650kgs is
0.168 not 0.1051

and if you do HP/kg it looks even more impressive.. the new CBR600RR has a 1:1 power to weight ratio if you calculate it that way (140HP/140Kg)

or was it the YZF600... either way thats impressive..

but even still.. whack me at 80Kgs ontop of it and it screws it power to weight up more than the 605kg my mini van tips in at (even less now it has no carpet)

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Lillee

Post subject:

Posted: Wed Apr 13, 2005 8:48 pm

1360cc

Joined: Tue Jun 01, 2004 3:41 pm
Posts: 6858
Location: Special Tuning Sydney

Yes Mr Bradley! It's been edited above.

The website for this calculation is here:
http://www.ajdesigner.com/phphorsepower ... _ratio.php

And yes I converted all the KW to HP before tossing the numbers in.

Brad, I think the Pocket Rocket of yours has the same ratio as a 2002 Porsche 911 Turbo 345KW!!!

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