0 - 60 times, please add yours

[Mitchy]

They do mate, remap should up limiter to around 6800rpm mechanically (7000ish on clocks)

The thing is, the car begins to feel very sluggish when you rev past an indicated 6600-6700 so there's not much point in pushing it further. Its quicker changing into 3rd especially if accelerating hard well past 60mph. When im in race mode, i dont hold out for 60 ill change as i often go far higher than that

Because your over revving in that gear its going to effect gearchange also as when you drop back down into next gear you'll be higher up than you should for the ''sweet spot''

To keep it in its sweet spot, you should be changing at indicated 6600ish rpm in every gear.

 

[skahigh]

my poor thing barely gets revved above 5k, 5.5 if im pushing it a bit....i just dont want to lose my license on my 40mph limit route to work!

 

[speedsix]

They do mate, remap should up limiter to around 6800rpm mechanically (7000ish on clocks)

The thing is, the car begins to feel very sluggish when you rev past an indicated 6600-6700 so there's not much point in pushing it further. Its quicker changing into 3rd especially if accelerating hard well past 60mph. When im in race mode, i dont hold out for 60 ill change as i often go far higher than that

Because your over revving in that gear its going to effect gearchange also as when you drop back down into next gear you'll be higher up than you should for the ''sweet spot''

To keep it in its sweet spot, you should be changing at indicated 6600ish rpm in every gear.

The higher gears are closer together therefore you need to shift later and take the revs higher in the lower gears. I did some rough calculations based on the power graphs revo list (not accurate I know) for an example 1st to 2nd was 7000rpm for maximum power, 2nd to 3rd was 6500, 3rd to 4th 6250 and so on.

 

[Mitchy]

True mate but peak power isn't achieved until around 6400rpm. (Based on RR data) I think its a waste changing before peak power.

I would never change below 6000rpm when in race mode, would think i would be wasting something!

Your right about 1st though, give it the beans to 7000. Happens so quickly, its just when you manage to get hold of it.

 

[CupraUK]

Moving away from the 60 in 2nd point, as you are accelerating hard through the gear is it not possible that the car can hit 60 whilst the clutch is engaged? (due to the energy you are carrying) You have not got the physical restriction of the engine on the rev limiter and you should reach 60 quicker than having to engage 3rd and accelerate.

If this is the case then technically you should change a split second before the limiter.

 

[chriswilks]

skahigh has a good point(post#80)!!even a second difference in 0-60 times isnt much on the road,its usually after 60 that power and torque become apparent.
my brother drives a civic type s (160bhp) not much in it until 50-60 then theres a difference, or from a rolling start.most fwd cars are a pig off the line anyway.anyone agree??

 

[DPJ]

Moving away from the 60 in 2nd point, as you are accelerating hard through the gear is it not possible that the car can hit 60 whilst the clutch is engaged? (due to the energy you are carrying) You have not got the physical restriction of the engine on the rev limiter and you should reach 60 quicker than having to engage 3rd and accelerate.

If this is the case then technically you should change a split second before the limiter.

The moment you come off the power, you will stop accelerating. Kinetic energy will carry you forward, but drag will have immediate effect = deceleration.

(and you can't do 60 in second. )

 

[chriswilks]

am i drunk of two cans or am i thinking someone sort of said that you will hit 60 coasting,or what!! i dont get it!!
however i do have faith in hitting 60 in 2nd in lc 180.

 

[CupraUK]

The moment you come off the power, you will stop accelerating. Kinetic energy will carry you forward, but drag will have immediate effect = deceleration.

(and you can't do 60 in second. )

No I'm not on drugs... If you can do 58.6 (or whatever was claimed earlier) in about 6 seconds in 2nd then you can't tell me the acceleration drops to nothing within 0.14 of a second of hitting the clutch.

 

[CupraUK]

Just found some evidence (and its an 1.8t too!!)

At no point does acceleration fall to zero and mph continues to climb during the changes

 

[TheSultanofPing]

skahigh has a good point(post#80)!!even a second difference in 0-60 times isnt much on the road,its usually after 60 that power and torque become apparent.

This is why 0-60 times are a bad way to compare cars' performance. the difference between 8 and 9 second 0-60 cars would be maybe a nose between the cars at 60 from a standing start but the difference between a 3 sec and 4 sec car would be much greater, maybe 1 - 1.5 car lengths at 60. also if you put a lotus Elise next to a Vauxhall Monaro (both 0-60 in 5.6), I bet straight after 60 mph the Monaro would start creating a gap rapidly. Throw a Impreza WRX (5.6 also) in there too and after its 4wd launch advantage it would lose ground to the other two.
On the road, low down torque gives an advantage (like a diesel or 1.8T VAG petrol ) as there is instant muscle at low revs.

 

[BCM]

I cannot beleive people are stil trying to argue that there standard gearbox and rev limiter cars will do 60 in second, it just wont happen, it can't!

It been proven many many times, can people not accept facts,
there are some members saying prove it, but it is proven,
using official timing equiptment and using vagcom (not as accurate but more than a speedo)
The standard 6 speed box will not do it and if your speedo is reading any more than about 62 in 2nd then your speedo is way out!

 

[DPJ]

Just found some evidence (and its an 1.8t too!!)

At no point does acceleration fall to zero and mph continues to climb during the changes

So you've just proved that Newton's Second Law of Motion is wrong.

Basic physics. Acceleration is the change of speed of a body over time. Without a force being applied, you cannot have change of speed.

When the clutch is dipped, force is no longer being applied. The graph you show is smoothed and is plotted against a limited set of measurements. Because of that, spikes aren't shown. There would be very brief spikes to zero acceleration (or slightly negative) if the graph wasn't smoothed and there were many more sample points.

 

[skahigh]

Basic physics. Acceleration is the change of speed of a body over time. Without a force being applied, you cannot have change of speed.

I'm not going to argue with this but do you think its conceivable that as you push the clutch and disengage the gear linkage the reduced drag (that the gear linkage creates) COULD allow the car to continue accellerating (if only briefly) before wind resistance and contact resistance at the tyres forces the slow down?

 

[DPJ]

I'm not going to argue with this but do you think its conceivable that as you push the clutch and disengage the gear linkage the reduced drag (that the gear linkage creates) COULD allow the car to continue accellerating (if only briefly) before wind resistance and contact resistance at the tyres forces the slow down?

No. Once the force is removed (engine power taken off gearbox) acceleration stops. Full stop. Your speed hasn't altered.

In your example, where is the force coming from to give acceleration while the clutch is depressed?

 

[cordobabrendy]

once force has been removed you will sit at the current speed but instantly aerodynamics hits your car up the moosh it starts to slow, car engines arnt rubber bands.

 

[BCM]

as said nothin accelerates without a force acting on it, whether that is gravity, an engine or anything else but your car will not pick up speed if you put the clutch down at 58mph after booting it to there!

 

[RobM]

Just found some evidence (and its an 1.8t too!!)

At no point does acceleration fall to zero and mph continues to climb during the changes

What that graph prooves is that you can change gear and continue to accelerate in less than a second. It doesn't show you can accelerate without any force moving the car, or else all our cars would be able to run on fresh air without the engine running... just start them off, get moving, turn off the engine and it will contine to move forward, right? No....

 

[CupraUK]

OK, its just just an idea. Well disproved by DPJ,BCM, RobM and Newton!

(I still can't get my head around why the kenetic force is not acting but I'm willing to let it go because of lack of physics knowledge!)

 

[Mike Green]

So, does anyone know whether you can do 60mph in second gear. I am not sure......

Only joking peeps.