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Author power to weight calculator (you cant beat physic's)
big eck
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Registered: 20th Apr 03
Location: Tullibody. Drives - Audi B8 S4 & Fiesta Zetec-S
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20th Apr 10 at 17:40   View User's Profile U2U Member Reply With Quote

Mine, dont know if its realistic till I eventually put it on the 1/4 mile

Power at Flywheel (BHP) : 350
Weight without Driver (KG) : 1410
Power to Weight Ratio (BHP Per Ton) : 252.21
0 - 60 (Secs) : 4.10
0 - 100 (Secs) : 10.48
60 - 100 (Secs) : 6.38
Quarter Mile (Secs) : 12.75
Terminal Speed (MPH) : 110.29
Drag Strip Quarter Mile (Secs) : 12.35
Drag Strip Terminal Speed (MPH) : 113.94
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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20th Apr 10 at 17:42   View User's Profile U2U Member Reply With Quote

things you cannot factor into 2 input boxes if you know the correct info like i do about my own car.

gear ratios. grip, wheel size, tyre size, co-efficient drag, is the surface flat, weather conditions, condition of surface etc, air temperature.

infact, putting a bhp and a weight into a box is only accurate for working out what power your car has per tonne. nothing else.

edit, driver skill, rpm limit, rpm gear change, lim slip etc etc etc etc etc etc etc etc

see what im saying?

[Edited on 20-04-2010 by Nic Barnes]
Corsa_Sport21
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Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
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20th Apr 10 at 17:43   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Nic Barnes
obviously you know best.


So it would seem.
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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20th Apr 10 at 17:44   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Corsa_Sport21
quote:
Originally posted by Nic Barnes
obviously you know best.


So it would seem.


oh right.
Adam_B
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Registered: 13th Dec 00
Location: Lancashire
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20th Apr 10 at 17:45   View User's Profile U2U Member Reply With Quote

there not like normal headrests its just a random lump of pointless behind the seat.

I wouldnt mind making mine a bit quicker, usually the cheapest way to do that to a car is by making it lighter but i had a look and struggled to find anything on there i didnt need or could remove easily Forgot the exhausts were fair heavy, might try swapping the pre-cat thingy.

Mines 237bhp, 930 kgs which is 258.93bhp per ton. The times its giving me are ridiculous
R Lee
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Registered: 15th Aug 03
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20th Apr 10 at 18:12   View User's Profile U2U Member Reply With Quote

My car is a fatty

Power at Flywheel (BHP) : 343
Weight without Driver (KG) : 1715
Power to Weight Ratio (BHP Per Ton) : 203.21
0 - 60 (Secs) : 5.43
0 - 100 (Secs) : 12.56
60 - 100 (Secs) : 7.13
Quarter Mile (Secs) : 13.69
Terminal Speed (MPH) : 104.39
Drag Strip Quarter Mile (Secs) : 13.59
Drag Strip Terminal Speed (MPH) : 105.56

chris_uk
Premium Member

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Registered: 8th Jul 03
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20th Apr 10 at 18:34   View Garage View User's Profile U2U Member Reply With Quote

quote:
Originally posted by mattk
quote:
Originally posted by chris_uk
2.3 KG in headrests



you have took your headrests out for the sake of 2.3 Kilos


you can see the random bit left, i cut off loads.



here is it finished with cut down covers

BarnshaW
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Registered: 25th Oct 06
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20th Apr 10 at 18:35   View User's Profile U2U Member Reply With Quote

fuck, if i was guna shed 2.3kg i would just curl out a massive turd before going for a drive, sod cutting the headrests out
chris_uk
Premium Member

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Registered: 8th Jul 03
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20th Apr 10 at 18:36   View Garage View User's Profile U2U Member Reply With Quote

you get much better rear vision now they have been removed.

and its weight at the highest point of the car aswell thats gone.
Adam_B
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Registered: 13th Dec 00
Location: Lancashire
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20th Apr 10 at 18:40   View User's Profile U2U Member Reply With Quote

how are they held in?
chris_uk
Premium Member

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Registered: 8th Jul 03
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20th Apr 10 at 18:41   View Garage View User's Profile U2U Member Reply With Quote

welded in place.

here is a pic as i would be looking through the rear view



now imagine them headrests gone..
rustyarchs
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Registered: 29th Aug 04
Location: scotland
User status: Offline
20th Apr 10 at 18:47   View User's Profile U2U Member Reply With Quote

Power at Flywheel (BHP) : 120
Weight without Driver (KG) : 1060
Power to Weight Ratio (BHP Per Ton) : 115.02
0 - 60 (Secs) : 8.98
0 - 100 (Secs) : 28.61
60 - 100 (Secs) : 19.63
Quarter Mile (Secs) : 17.46
Terminal Speed (MPH) : 78.11
Drag Strip Quarter Mile (Secs) : 17.36
Drag Strip Terminal Speed (MPH) : 79.02

Power at Flywheel (BHP) : 197
Weight without Driver (KG) : 1170
Power to Weight Ratio (BHP Per Ton) : 171.08
0 - 60 (Secs) : 6.42
0 - 100 (Secs) : 16.39
60 - 100 (Secs) : 9.97
Quarter Mile (Secs) : 14.82
Terminal Speed (MPH) : 95.10
Drag Strip Quarter Mile (Secs) : 14.62
Drag Strip Terminal Speed (MPH) : 96.77

Power at Flywheel (BHP) : 150
Weight without Driver (KG) : 1305
Power to Weight Ratio (BHP Per Ton) : 116.79
0 - 60 (Secs) : 8.35
0 - 100 (Secs) : 27.51
60 - 100 (Secs) : 19.16
Quarter Mile (Secs) : 17.20
Terminal Speed (MPH) : 79.07
Drag Strip Quarter Mile (Secs) : 16.80
Drag Strip Terminal Speed (MPH) : 81.29

do i win a prize for having the lowest averages over my cars?? , although tbh i do think the P to W ratio of the mgf will be a bit better than that as since its an mg a lot of bits will have fallen off therefor making it much much lighter

Ben G
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Registered: 12th Jan 07
Location: Essex
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20th Apr 10 at 18:51   View User's Profile U2U Member Reply With Quote

Power at Flywheel (BHP) : 253
Weight without Driver (KG) : 1390
Power to Weight Ratio (BHP Per Ton) : 184.94
0 - 60 (Secs) : 5.99
0 - 100 (Secs) : 14.42
60 - 100 (Secs) : 8.43
Quarter Mile (Secs) : 14.33
Terminal Speed (MPH) : 99.69
Drag Strip Quarter Mile (Secs) : 14.13
Drag Strip Terminal Speed (MPH) : 101.45

about right 0-60. dunno about everything else.

puma is laughable, but again, 0-60 is accurate.

Power at Flywheel (BHP) : 125
Weight without Driver (KG) : 1040
Power to Weight Ratio (BHP Per Ton) : 122.12
0 - 60 (Secs) : 8.61
0 - 100 (Secs) : 25.68
60 - 100 (Secs) : 17.07
Quarter Mile (Secs) : 17.09
Terminal Speed (MPH) : 81.57
Drag Strip Quarter Mile (Secs) : 16.89
Drag Strip Terminal Speed (MPH) : 82.95
harrisp
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Registered: 15th Dec 07
Location: Derbyshire
User status: Offline
20th Apr 10 at 18:52   View User's Profile U2U Member Reply With Quote

Power at Flywheel (BHP) : 115
Weight without Driver (KG) : 1700
Power to Weight Ratio (BHP Per Ton) : 68.73
Invalid Entry : Power to Weight Ratio must be between 95 and 1300 BHP/Ton



Ben G
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Registered: 12th Jan 07
Location: Essex
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20th Apr 10 at 18:55   View User's Profile U2U Member Reply With Quote

what car is that?
fast-as-u-can
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Registered: 26th Apr 09
Location: Hastings
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20th Apr 10 at 19:25   View User's Profile U2U Member Reply With Quote

227.64bhp per ton

233bhp
1040kg
harrisp
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Registered: 15th Dec 07
Location: Derbyshire
User status: Offline
20th Apr 10 at 19:29   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Ben G
what car is that?



frontera

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