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A2H GO

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Registered: 14th Sep 04
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29th Sep 11 at 11:34

quote:
Originally posted by AK
may as well move this to offday now.

adiohead

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Registered: 28th Sep 01
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29th Sep 11 at 11:35

quote:
Originally posted by AK
<smacks adiohead against wall>

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Registered: 5th Jul 00
Location: Aberdeen City
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29th Sep 11 at 11:37

quote:
Originally posted by chris_uk
well i think you need to look at power to weight than just bhp.. jimmy lapped faster at snetterton than umar and he had 400bhp more.

Yes - because he (jimmy) will have gone round the corners MUCH quicker than the RX7...

that plots above have both cars taking the corners roughly at the same speed.... the lap time difference is mostly just grunt on the straights.

smcGSI16V

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Registered: 26th May 03
Location: Farnborough Drives: Thurlby 888 CDTi No.98
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29th Sep 11 at 11:42

If the impreza had comparable tyres to the skyline would it then be faster in the corners then have more speed on the straights and then be about the same lap time?

Nick-S

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Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
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29th Sep 11 at 11:48

So in summary both cars handle well, But the faster car went round the track... faster?

Phillips_91

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Registered: 20th Jan 10
Location: Blackpool. Drives: Sapphire Black Mk4 Astra 1.8
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29th Sep 11 at 11:49

IMO (and i've never been on track so might talk a load of absolute shite) the power isn't giving fee that much more edge, so ok she gets up to speed quicker and she's doing a fair wack more speed at the end of the straights, but thats hindering her in th sence that she has to brake earlier, longer and harder

But like i say, i've only ever done straight line racing so i could be talking utter shit

John

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Registered: 30th Jun 03
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29th Sep 11 at 12:01

I'm no track expert but I think the quicker one will be faster.

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Registered: 5th Jul 00
Location: Aberdeen City
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29th Sep 11 at 12:12

phillips_91 - dont worry, you're not the only one talking utter shite

smcGSI16V - If the impreza had 888's I'd think it could have maybe done 0.5 better. The GTR would have still taken about 1 second + on EVERY straight.

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Location: Aberdeen City
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29th Sep 11 at 12:29

4 impreza laps overlaid, my theoretical best was 58.21

My fastest lap - was actually the lap that I took McItyres and part of Duffis the slowest

Seems I lost it all on the braking into the bloody hairpin :S (was actually taking it in a different gear compared to normal!)

the flat red line on Delta-T is my quickest lap (so above X axis = slower, below = faster)

[Edited on 29-09-2011 by AK]

chris_uk

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Registered: 8th Jul 03
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29th Sep 11 at 12:31

your question "how much is gained from more power" cant be really answered unless you use the same conditions but only change 1 variable.. power.

you havent mentioned torque yet which is an important factor, expecially on a teack like knockhill.

lets say that all the variables are the same and we could just change tge power it then depends on what track its used on, a track with long straights would probably see more of a gain, but remembering the faster you go the sooner you have to stop.

a car with more power wont just be faster on the straights either it will use it all over the track.

more power in a car id say would give you better laptimes but there will come a point of drivability. if you have 600bhp yet can only use 60% throttle then there is no longer much point in all that power. (i know of an elise which had the same issue with too much power he could no longer drive the car as well as he could so they lowered the power)

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Location: Aberdeen City
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29th Sep 11 at 12:42

you're really not getting what I'm suggesting....

look at the traces.... we took the corners at roughly the same speed - so ignore them.

Look at the Delta-T for the straights.....

Fee is simply pulling out 1+ seconds a bloody straight.

That is all.

I'm not comparing tyres, suspension, drivers, torque, weight, weather conditions, breast size etc etc

The GTR is simple fucking off down the straights opening up the gap. IF... IF... IF I had comparable power my Impreza SHOULD be able to do a similar lap time.

Simple stuff

[Edited on 29-09-2011 by AK]

John

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Registered: 30th Jun 03
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29th Sep 11 at 12:46

So point of the thread is, 2 comparable cars, all being equal, will go round a track at the same speed?

sand-eel

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29th Sep 11 at 12:46

These times are with different drivers are they not?

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29th Sep 11 at 12:49

quote:
Originally posted by John
So point of the thread is, 2 comparable cars, all being equal, will go round a track at the same speed?

no....

the point was to show that a lap time differnence of 4.5 secs is possible with more fucking power.

0775kieran

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Registered: 28th Apr 10
Location: Bolton, Greater Manchester
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29th Sep 11 at 12:51

Clever stuff

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Location: Aberdeen City
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29th Sep 11 at 12:51

quote:
Originally posted by sand-eel
These times are with different drivers are they not?

different drivers
different cars
different days
different years
different power

same day of the week, and same month....

I'm not making any direct comparisions other than having a fuck load more power seems to give you an X second advantage on Y straight.

sand-eel

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Registered: 15th Mar 07
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29th Sep 11 at 12:56

Not very accurate time difference if you are the better driver, if you drove both cars maybe the difference could be 5 seconds instead of 4.
Still with an extra 200bhp no surprises tbh.

John

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Registered: 30th Jun 03
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29th Sep 11 at 12:59

quote:
Originally posted by AK

quote:
Originally posted by John
So point of the thread is, 2 comparable cars, all being equal, will go round a track at the same speed?

no....

the point was to show that a lap time differnence of 4.5 secs is possible with more fucking power.

Although there are other variables here that your graphs don't take 100% account of, they are both the same thing.

adiohead

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Registered: 28th Sep 01
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29th Sep 11 at 13:04

I would still like an R32 GTR, even though they are slow

3CorsaMeal

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Registered: 11th Apr 02
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29th Sep 11 at 13:15

i'd rather take 4.5seconds longer and not need to find the extra 270bhp needed to do it.

on a road car that is

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Location: Aberdeen City
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29th Sep 11 at 13:19

quote:
Originally posted by adiohead
I would still like an R32 GTR, even though they are slow

very good.

dont think i've ever desired to own to a Seat Leon

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Location: Aberdeen City
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29th Sep 11 at 13:20

quote:
Originally posted by John
Although there are other variables here that your graphs don't take 100% account of, they are both the same thing.

care to elaborate?

chrisritch

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Registered: 2nd Sep 08
Location: Northants Drives: V40
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29th Sep 11 at 13:22

so its a pointless thread of you telling us a more powerful car is faster on the straights?

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Registered: 5th Jul 00
Location: Aberdeen City
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29th Sep 11 at 13:24

quote:
Originally posted by sand-eel
Not very accurate time difference if you are the better driver, if you drove both cars maybe the difference could be 5 seconds instead of 4.
Still with an extra 200bhp no surprises tbh.

i'm not saying i'm a better driver.....
i'm not claiming that this is a 100% accurate comparison.....

Chris x

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Registered: 11th Sep 08
Location: Bexhill
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29th Sep 11 at 13:25

quote:
Originally posted by AK

quote:
Originally posted by adiohead
I would still like an R32 GTR, even though they are slow

very good.

dont think i've ever desired to own to a Seat Leon

Thats fucking harsh m8

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