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why do simular cars have suh different top speed and acceleration ?

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Old Jan 1, 2010 | 09:48 AM
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Default why do simular cars have suh different top speed and acceleration ?

is it to do with aerodynamic drag and stuff. what is it ??? help please !!
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Old Jan 1, 2010 | 09:49 AM
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Weight? Gearing? Area under the curve?


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Grant
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Old Jan 1, 2010 | 09:50 AM
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Lots of things, gear ratios, aerodynamics, weight...
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Old Jan 1, 2010 | 10:12 AM
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Random !
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Old Jan 1, 2010 | 10:15 AM
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DRIVER!!!!!!!!!!!!!!
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Old Jan 1, 2010 | 10:17 AM
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i think its mad how you can have 5 of the same type of car and 1of them will be faster than the rest.
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Old Jan 1, 2010 | 10:32 AM
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If you had 5 cars, same spec. straight off the production line using the same driver, the performance over the same track or route would be almost identical.

5 cars still original identical make / spec, say 15 years old, would have very similar performance.

There are too many variables to be able to answer the O.P question.

It's like trying to compare Hobnobs to Custard creams.

They are both biscuits, that's it.


.
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Old Jan 1, 2010 | 10:39 AM
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yea but we all know hobnobs are so much better
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Old Jan 1, 2010 | 10:42 AM
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Originally Posted by focusv8
If you had 5 cars, same spec. straight off the production line using the same driver, the performance over the same track or route would be almost identical.

5 cars still original identical make / spec, say 15 years old, would have very similar performance.

There are too many variables to be able to answer the O.P question.

It's like trying to compare Hobnobs to Custard creams.

They are both biscuits, that's it.


.
this is not strictly true, when i has my fez zs i only put an air filter o it an it made 114 bhp at a rr day where as my mates zs with identical filter only made 104, ford state 106 standard, both were under 4 months old too
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Old Jan 1, 2010 | 10:47 AM
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Originally Posted by turbocabessex
this is not strictly true, when i has my fez zs i only put an air filter o it an it made 114 bhp at a rr day where as my mates zs with identical filter only made 104, ford state 106 standard, both were under 4 months old too
Too many variables again.

Not the same filter used on both cars.
Tyres probably different.
Measured on a R.R, where 2 runs with the same car will differ.
Ford didn't use the same R.R to give the 106 spec.

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Old Jan 1, 2010 | 10:53 AM
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Originally Posted by focusv8
Too many variables again.

Not the same filter used on both cars.
Tyres probably different.
Measured on a R.R, where 2 runs with the same car will differ.
Ford didn't use the same R.R to give the 106 spec.

.
as stated both same filters (green cotton)
both cars under 4 month old both from essex ford
both with pirelli p6000 tires on as standard on the zs
an the ford figure is irrelivant to be honest i was just showing a 10 bhp difference in 2 cars
both were identical bar the colour an both was at the same rr day
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Old Jan 1, 2010 | 10:57 AM
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Originally Posted by turbocabessex
as stated both same filters (green cotton)
both cars under 4 month old both from essex ford
both with pirelli p6000 tires on as standard on the zs
an the ford figure is irrelivant to be honest i was just showing a 10 bhp difference in 2 cars
both were identical bar the colour an both was at the same rr day
Yea, but were the pressures identical in the tyres? Did you both use the same fuel, filled from the same garage, at the same time? Was the mileage on the cars identical? Do you both use your cars in exactly the same way, i.e heavy traffic only, weekend 5k+rpm only...

R/R Days are good for meeting up for a blether, listening to different exhausts/cars being thrashed and thats about it.. I wouldn't place great faith in the figures produced.


Cheers,
Grant
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Old Jan 1, 2010 | 11:06 AM
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Originally Posted by RS Grant
Yea, but were the pressures identical in the tyres? Did you both use the same fuel, filled from the same garage, at the same time? Was the mileage on the cars identical? Do you both use your cars in exactly the same way, i.e heavy traffic only, weekend 5k+rpm only...

R/R Days are good for meeting up for a blether, listening to different exhausts/cars being thrashed and thats about it.. I wouldn't place great faith in the figures produced.


Cheers,
Grant
i think the point is being lost here, he was asking y 2 near identical cars have different power/top speed and i was pointing out an example, all u have really done is answer his question, and as both cars were pretty much brand new an prob not even covered 5k our driving styles wouldnt make that much of a difference, im not thick an i kno wot im talkin about
all i was tryin so say is that the person who said cars with the same mods will be same power was wrong
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Old Jan 1, 2010 | 05:24 PM
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What a boring thread. Sorry to say fellas
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Old Jan 1, 2010 | 05:31 PM
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i think ive opened a can of worms.
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