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Author your top speed in a x16xe??
dhdev
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8th Aug 06 at 21:28   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Steve
quote:
Originally posted by dhdev
If the clocks actually had numbers down south then mine would be showing 150+ on the clocks. Prob a real life 140mph at 7200rpm in fifth


what cars that?


Corsa A, 16XE on throttle bodies etc. It may be a higher top speed than that as i sat on the arse of an E46 M3 on the autobahn and he couldn't go any faster when i crawled passed him (possibly hit his speed limiter) or maybe he just bottled it
Dave A
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8th Aug 06 at 21:29   View User's Profile U2U Member Reply With Quote
well, if mine gets a genuine 140mph at 8000+ rpm the how can you have the same speed at 7200 rpm???
Steve
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8th Aug 06 at 21:30   View Garage View User's Profile U2U Member Reply With Quote
what i was thinking, more along the lines of what box do you have in it
dhdev
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8th Aug 06 at 21:30   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Dave A
well, if mine gets a genuine 140mph at 8000+ rpm the how can you have the same speed at 7200 rpm???


What box, FD, tyres are you running?
dhdev
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8th Aug 06 at 21:30   View User's Profile U2U Member Reply With Quote
Mines f13 with a 3.74 FD on 195/50 15s
Dave A
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8th Aug 06 at 21:32   View User's Profile U2U Member Reply With Quote
mines an f15cr with lots of oil leaking out of it
dhdev
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8th Aug 06 at 21:32   View User's Profile U2U Member Reply With Quote
At 7200 its 145.9mph. When i raced the M3 it may have achieved a higher rpm?? i was too busy watching the road

[Edited on 08-08-2006 by dhdev]
dhdev
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8th Aug 06 at 21:43   View User's Profile U2U Member Reply With Quote
You can use this site http://slindborg.host.sk/topspeed/index.php to give an approximation of top speed, bare in mind this is theoretical and would require a massive road (or autobahn ) to achieve it.
Dave A
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8th Aug 06 at 21:47   View User's Profile U2U Member Reply With Quote
it came up with this which is scarily accurate:

Predicted Top Speed 140.54 MPH
BHP needed at the wheels to achieve Desired Top Speed 177.94 BHP

I have 177.6 bhp
Danny H
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8th Aug 06 at 21:48   View User's Profile U2U Member Reply With Quote
My car does 120 at 3.5k revs
Robin
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8th Aug 06 at 21:49   View Garage View User's Profile U2U Member Reply With Quote
what did you put as frontal area and drag coefficient Dave?
dhdev
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8th Aug 06 at 21:49   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Dave A
it came up with this which is scarily accurate:

Predicted Top Speed 140.54 MPH
BHP needed at the wheels to achieve Desired Top Speed 177.94 BHP

I have 177.6 bhp


Ace

For mine it calculates 156.78mph, which would explain the crawling passed the M3

[Edited on 08-08-2006 by dhdev]
andy1868
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8th Aug 06 at 21:49   View User's Profile U2U Member Reply With Quote
can i ask what the coefficient drag for a corsa is? and the frontal area of car?
Steve
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8th Aug 06 at 21:50   View Garage View User's Profile U2U Member Reply With Quote
that calculator is horse shit, it doesnt evn take into account weight, wheel size etc etc
Robin
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8th Aug 06 at 21:51   View Garage View User's Profile U2U Member Reply With Quote
or gearing, or torque curves, or conveyor belt, or tyre pressures....
dhdev
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8th Aug 06 at 21:52   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Steve
that calculator is horse shit, it doesnt evn take into account weight, wheel size etc etc


Why would it need to? its an approximation of the theoretical tops speed. at those speeds the weight of the car is negligable, drag due to air resistance is the limiting factor.
Robin
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8th Aug 06 at 21:53   View Garage View User's Profile U2U Member Reply With Quote
so a ford capri with 300bhp will do 223.69mph
Steve
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8th Aug 06 at 21:54   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by dhdev
quote:
Originally posted by Steve
that calculator is horse shit, it doesnt evn take into account weight, wheel size etc etc


Why would it need to? its an approximation of the theoretical tops speed. at those speeds the weight of the car is negligable, drag due to air resistance is the limiting factor.


so a tank with 228bhp is gonna do the same top speed as mine? if it has the same gearbox etc?
dhdev
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8th Aug 06 at 21:54   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by robmarriott
so a ford capri with 300bhp will do 223.69mph


I dunno, i don't know what the CoEf is or frontal area?
andy1868
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8th Aug 06 at 21:55   View User's Profile U2U Member Reply With Quote
are you telling me it won't rob?
Robin
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8th Aug 06 at 21:56   View Garage View User's Profile U2U Member Reply With Quote
Steve, does your car do 214mph?

it should do.

a quick google got me the Drag and frontal area numbers....
Dave A
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8th Aug 06 at 21:56   View User's Profile U2U Member Reply With Quote
drag coefficient of a corsa b is about 03. I think
dhdev
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8th Aug 06 at 21:58   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Steve
quote:
Originally posted by dhdev
quote:
Originally posted by Steve
that calculator is horse shit, it doesnt evn take into account weight, wheel size etc etc


Why would it need to? its an approximation of the theoretical tops speed. at those speeds the weight of the car is negligable, drag due to air resistance is the limiting factor.


so a tank with 228bhp is gonna do the same top speed as mine? if it has the same gearbox etc?


Not far off. It would take for ever to get there tho.
Steve
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8th Aug 06 at 21:59   View Garage View User's Profile U2U Member Reply With Quote
it wouldnt get there mate
Robin
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8th Aug 06 at 22:01   View Garage View User's Profile U2U Member Reply With Quote
apparently, a 500bhp capri does 265mph

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