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Dygear
7th December 2009, 11:10
BF1 (http://www.lfs.net/?page=contents&car=bf1)
Drive:Rear Wheel Drive (RWD)
Engine:2.4 litre V8
Power:538 kW (722 bhp) @ 19076 rpm
Torque:288 Nm (213 lbft) @ 16315 rpm
Total Mass:530 kg (1323 lbs)
Power-weight:1015 W/kg (1383 bhp/ton)
Weight dist:46.3 F 53.7 R

How is the Power to Weight found? In both W/kg and bhp/ton. With the information given here ...
Bean0
7th December 2009, 11:16
Power / Weight

538000 W / 530 Kg = 1015.09 W/Kg
722 bhp / 0.53 tonne = 1362.26 bhp/tonne

The weight in pounds is wrong 530 Kg = 1168 lb

Also, UK and US imperial tons are different.

722 bhp / (530/1016) ton = 1384 bhp/ton (UK)
722 bhp / (530/907.2) ton = 1235 bhp/ton (US)
hotmail
7th December 2009, 11:33
BF1 (http://www.lfs.net/?page=contents&car=bf1)

Drive:

Rear Wheel Drive (RWD)

Engine:

2.4 litre V8

Power:

538 kW (722 bhp) @ 19076 rpm

Torque:

288 Nm (213 lbft) @ 16315 rpm

Total Mass:

530 kg (1323 lbs)

Power-weight:

1015 W/kg (1383 bhp/ton)

Weight dist:

46.3 F 53.7 R


How is the Power to Weight found? In both W/kg and bhp/ton. With the information given here ...
Lol just wanted too say , bean0 is the one you are looking for:D

but he was too :tilt:again
AndroidXP
7th December 2009, 11:34
The total mass written on the website is wrong. The kg value is without driver, the lbs value with the driver included.

Without driver:
530 kg = 1169 lbs

With driver:
600 kg = 1324 lbs

The values overall are also a bit off, for example nowadays the BF1 has only 537 kW @ 19063 rpm, instead of what is listed on the page.
Dygear
7th December 2009, 12:40
The total mass written on the website is wrong. The kg value is without driver, the lbs value with the driver included.

Without driver:
530 kg = 1169 lbs

With driver:
600 kg = 1324 lbs

The values overall are also a bit off, for example nowadays the BF1 has only 537 kW @ 19063 rpm, instead of what is listed on the page.

Wonder if all of the other values where wrong too, because I JUST entered all of this data into a Database to compare cars to each other. I was also wondering why my calculations where not coming out the same as what was on the website.

722 bhp / (530/1016) ton = 1384 bhp/ton (UK)
722 bhp / (530/907.2) ton = 1235 bhp/ton (US)

Where are you getting the two numbers in bold from? I guess 530 is from the top equation's Kg but the other two numbers are not noted anywhere.
Bob Smith
7th December 2009, 12:56
That's how many kilos are in a short or long ton.
Bean0
7th December 2009, 12:56
Where are you getting the two numbers in bold from? I guess 530 is from the top equation's Kg but the other two numbers are not noted anywhere.

http://en.wikipedia.org/wiki/Ton

Not exactly the most reliable, but I hope it's correct in this instance.
Dygear
7th December 2009, 17:14
So then: BHP / (WightKg / Kg) = Power to Weight (In Kg)

Thanks. Why this is not on Wikipedia anywhere, I have no idea.
Dygear
7th December 2009, 17:29
The result of that is this query:

SELECT *, (`Power` / (`Mass` / 2000)) AS `HP/Ton` FROM `lfs`;

On this database:
CREATE TABLE IF NOT EXISTS `cars` (
`NameTiny` varchar(3) NOT NULL,
`NameFull` varchar(16) NOT NULL,
`License` enum('Demo','S1','S2','S3') NOT NULL,
`DriveTrain` enum('FWD','AWD','RWD') NOT NULL,
`EngineSize` float(2,1) unsigned NOT NULL COMMENT 'litre',
`EngineAspiration` enum('Naturally','Turbocharged','Supercharged') NOT NULL,
`EngineConfiguration` enum('Inline','Flat','V') NOT NULL,
`EngineCylinders` tinyint(3) unsigned NOT NULL,
`Power` smallint(5) unsigned NOT NULL COMMENT 'bhp',
`PowerRPM` smallint(5) unsigned NOT NULL COMMENT 'RPM',
`Torque` smallint(5) unsigned NOT NULL COMMENT 'Nm',
`TorqueRPM` smallint(5) unsigned NOT NULL COMMENT 'RPM',
`Mass` smallint(5) unsigned NOT NULL COMMENT 'Lbs',
`WeightDist` varchar(16) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COMMENT='Live For Speed Car Info';

--
-- Dumping data for table `cars`
--

INSERT INTO `cars` (`NameTiny`, `NameFull`, `License`, `DriveTrain`, `EngineSize`, `EngineAspiration`, `EngineConfiguration`, `EngineCylinders`, `Power`, `PowerRPM`, `Torque`, `TorqueRPM`, `Mass`, `WeightDist`) VALUES
('XFG', 'XF GTI', 'Demo', 'FWD', 1.3, 'Naturally', 'Inline', 4, 130, 6871, 127, 5658, 2072, '60.0 F 40.0 R'),
('XRG', 'XR GT', 'Demo', 'RWD', 1.8, 'Naturally', 'Inline', 4, 140, 5945, 186, 4603, 2572, '54.3 F 45.7 R'),
('XRT', 'XR GT TURBO', 'S1', 'RWD', 2.0, 'Turbocharged', 'Inline', 4, 245, 6019, 325, 4585, 2699, '52.5 F 47.5 R'),
('RB4', 'RB4 GT', 'S1', 'AWD', 2.0, 'Turbocharged', 'Inline', 4, 241, 6056, 319, 4551, 2724, '57.4 F 42.6 R'),
('FXO', 'FXO TURBO', 'S1', 'FWD', 1.9, 'Turbocharged', 'Flat', 4, 234, 6757, 270, 5441, 2487, '58.9 F 41.1 R'),
('LX4', 'LX4', 'S1', 'RWD', 1.3, 'Naturally', 'Inline', 4, 140, 8212, 131, 6917, 1142, '47.5 F 52.5 R'),
('LX6', 'LX6', 'S1', 'RWD', 1.8, 'Naturally', 'Inline', 6, 190, 8429, 173, 7059, 1189, '48.0 F 52.0 R'),
('MRT', 'MRT5', 'S1', 'RWD', 0.6, 'Turbocharged', 'Inline', 4, 64, 7894, 69, 5071, 490, '37.6 F 62.4 R'),
('UF1', 'UF1000', 'S2', 'FWD', 1.0, 'Naturally', 'Inline', 4, 55, 5589, 65, 3009, 1323, '59.9 F 40.1 R'),
('RAC', 'RACEABOUT', 'S2', 'RWD', 2.0, 'Turbocharged', 'Inline', 4, 245, 5879, 360, 3500, 1763, '40.0 F 60.0 R'),
('FZ5', 'FZ50', 'S2', 'RWD', 3.6, 'Naturally', 'Flat', 6, 360, 7588, 392, 5019, 3041, '38.0 F 62.0 R'),
('FOX', 'FORMULA XR', 'S2', 'RWD', 2.0, 'Naturally', 'Inline', 4, 190, 7032, 221, 4964, 1079, '45.0 F 55.0 R'),
('XFR', 'XF GTR', 'S2', 'FWD', 2.0, 'Naturally', 'Inline', 4, 240, 7242, 270, 5178, 1843, '62.3 F 37.7 R'),
('UFR', 'UF GTR', 'S2', 'FWD', 1.4, 'Naturally', 'Inline', 4, 180, 8246, 178, 5870, 1323, '64.6 F 35.4 R'),
('FO8', 'FORMULA V8', 'S2', 'RWD', 3.0, 'Naturally', 'V', 8, 458, 8972, 401, 7059, 1323, '45.0 F 55.0 R'),
('FXR', 'FXO GTR', 'S2', 'AWD', 2.0, 'Turbocharged', 'Flat', 4, 490, 6278, 627, 4782, 2492, '57.5 F 42.5 R'),
('XRR', 'XR GTR', 'S2', 'RWD', 2.0, 'Turbocharged', 'Inline', 4, 490, 6278, 627, 4782, 2424, '55.4 F 44.6 R'),
('FZR', 'FZ50 GTR', 'S2', 'RWD', 3.6, 'Naturally', 'Flat', 6, 490, 8106, 503, 5267, 2425, '35.3 F 64.7 R'),
('BF1', 'BMW Sauber F1.06', 'S2', 'RWD', 2.4, 'Naturally', 'V', 8, 722, 19076, 288, 16315, 1383, '46.3 F 53.7 R'),
('FBM', 'FORMULA BMW', 'Demo', 'RWD', 1.2, 'Naturally', 'Inline', 4, 140, 8948, 125, 6756, 1024, '42.0 F 58.0 R'),
('VWS', 'VW Scirocco', 'S1', 'FWD', 2.0, 'Turbocharged', 'Inline', 4, 261, 6000, 350, 2500, 2862, '--.- F --.- R');
tristancliffe
7th December 2009, 17:52
So then: BHP / (WightKg / Kg) = Power to Weight (In Kg)

Thanks. Why this is not on Wikipedia anywhere, I have no idea.

I'm confused. Power to Weight is simply power divided by (to) weight.

You take the power. You divide it by the weight. You have the power to weight. If you want BHP/Tonne you take the power (say 300), you take the weight (say 0.8) and you divide the two together.

Thus a 300KW car that weighs 800kg has a power to weight of 375KW/Tonne.

If you used hp then it would be 375 hp/tonne. If you used long or short tons then it would be different again. If you measured it in BTUs/min/gram (say).

Simples.
Byku
7th December 2009, 18:03
Why can't we just use simple 1 ton = 1000 kg! It's so overcomplicated :x.
Whiskey
7th December 2009, 19:01
Metric Units FTW! :razz:
Bob Smith
7th December 2009, 19:45
Also sometimes expressed as the number of kilos each horsepower has to move.
Dygear
7th December 2009, 23:06
Metric Units FTW! :razz:

When Jeremy Clarkson starts giving power units in kW I'll start thinking about it.
Whiskey
11th December 2009, 16:41
You can not take as a reference a person who thinks that everybody drives in the wrong side :razz:
AndroidXP
11th December 2009, 16:46
Ironically the English language makes it clear enough who drives on the right side anyway :tilt:
Dygear
11th December 2009, 21:46
You can not take as a reference a person who thinks that everybody drives in the wrong side :razz:

Ironically the English language makes it clear enough who drives on the right side anyway :tilt:

Well played there Android, well played.
Whiskey
12th December 2009, 13:12
Touché :shy: