RE: Skoda Octavia vRS Revo Technik: Driven

[AER]

Sure - you can send your straw man to collect me from the airport.

[xjay1337]

Well you consistently claim dyno outputs to be nothing but lies!
And that only you/a few others can calculate power produced by an engine without even testing it.
It's an interesting theory. :-)

[AER]

You could too if you bothered to learn something

[Gtom]

Has anyone watched the video of the skoda on revo's website?

Awful music aside (why oh why?!) it shows a top speed run. The numbers increase at a fair old rate up to the end of the 170mph clock. Surely it's got to be making close to the claimed power to achieve this in the time it takes?

[thebraketester]

It's like playgroup on here sometimes.

Will that car make 400bhp?.... Yes.

Next.

[xjay1337]

AER said:

You could too if you bothered to learn something

No thanks, I prefer crayons and tin-foil hats.

[ORD]

Please can people look up (use Google) how dyno power numbers are calculated and the likely error margin. Please. It is seriously embarrassing to watch you get all nasty with an expert because he thinks engineering and mathematics are more likely to give the right answer than a dyno.

[xjay1337]

ORD said:

Please can people look up (use Google) how dyno power numbers are calculated and the likely error margin. Please. It is seriously embarrassing to watch you get all nasty with an expert because he thinks engineering and mathematics are more likely to give the right answer than a dyno.

How can you measure the power of an engine with mathematics?

You tell me using the IS38 turbo, and show all your calculations, what power a 2.0 TSI VAG engine makes and show me it's power curve.

Many thanks in advance.

[AER]

Gtom said:

Has anyone watched the video of the skoda on revo's website?
The numbers increase at a fair old rate up to the end of the 170mph clock. Surely it's got to be making close to the claimed power to achieve this in the time it takes?

Standard car does 150-154 claimed at 220hp according to the brochure. Same car at 170 is only consuming 220*(170/150)^3 = 320hp max, or 295 if you take the 154mph top speed as your baseline.

[Colonial]

xjay1337 said:

How can you measure the power of an engine with mathematics?

You tell me using the IS38 turbo, and show all your calculations, what power a 2.0 TSI VAG engine makes and show me it's power curve.

Many thanks in advance.

Also the increase in power if any from a remap increasing boost to 1.7 and fitting an aftermarket intake.

Please also provide boost and afr ratio via maths.

[AER]

BTW, if you dropped it into sixth at 160, and it really did have 410hp, revs would drop to the claimed peak power speed of 5400 and the remaining 100hp or so would rocket you off to about 190mph at 5700-ish...

Really...?

[daniel1920]

AER said:

Gtom said:

Has anyone watched the video of the skoda on revo's website?
The numbers increase at a fair old rate up to the end of the 170mph clock. Surely it's got to be making close to the claimed power to achieve this in the time it takes?

Standard car does 150-154 claimed at 220hp according to the brochure. Same car at 170 is only consuming 220*(170/150)^3 = 320hp max, or 295 if you take the 154mph top speed as your baseline.

You go on about dynos being inaccurate (they are I agree) and then quote brochure figures... Ive been in a meeting where we decide the brochure figure, and I can tell you no dynos are used

[xjay1337]

AER said:

BTW, if you dropped it into sixth at 160, and it really did have 410hp, revs would drop to the claimed peak power speed of 5400 and the remaining 100hp or so would rocket you off to about 190mph at 5700-ish...

Really...?

http://www.revotechnik.com/product-details/software/skoda/octavia-mk3-2013-/182/stage-3/

Look at the video. And the performance figures.

The 0-100 time is 10 seconds of this car.
With FWD traction issues.

http://www.autosnout.com/Cars-0-100mph-Times-List....

Other cars with similar times include

- Cayenne Turbo S
- Lotus Exige 240 R
- Porsche 911 (993) Turbo


The Octavia is faster than:

- Audi R8 4.2
- Aston Martin Vanquish
- Caterham R300
- Ferrari California.

All of these cars (and many others from the list - have way around 400bhp, some more, some less, depending on gearing, weight, etc).
I think around 400bhp is a very honest figure.
Regarding gearing, it is quite well known that some cars can achieve a higher top speed in 5th than 6th due to the gearing and the extra drag at high speeds. Often 6th gear is for economy on the motorway as opposed to top speed.

Regarding your other calculations I can't think of any big heavy-ish 400bhp car that can do 190mph.

The Audi R8 4.2 can do 187mph but it's much more slippery and is designed to be a high performance car thus the gearing and aerodynamics are configured as such.





FWIW, I'm still waiting for the mathematical equations as I asked above from (b)ORD. Maybe you can also help since you are quite the mathematical expert.

[Gtom]

AER said:

Gtom said:

Has anyone watched the video of the skoda on revo's website?
The numbers increase at a fair old rate up to the end of the 170mph clock. Surely it's got to be making close to the claimed power to achieve this in the time it takes?

Standard car does 150-154 claimed at 220hp according to the brochure. Same car at 170 is only consuming 220*(170/150)^3 = 320hp max, or 295 if you take the 154mph top speed as your baseline.

It was more the time it takes to achieve the speed it does. The standard car may do 150-154 but how much time/space does it need? I guess looking at the v-max section of the forum for other cars doing similar speeds at bruntingthorpe. I understand gearing and aero play a big part too but could this be used as an indicator?

The only way to know for sure would be to run a standard car as well.

[AER]

So, it seems those who worship numbers don't do maths.

Is that because they can't or because they don't like the answers..?

[xjay1337]

AER said:

So, it seems those who worship numbers don't do maths.

Is that because they can't or because they don't like the answers..?

I am still waiting for the answers (and your/ORDs theory)

Yet to hear anything.

Your above calculation regarding top speed does not take into account vehicle weight, aerodynamic drag, frictional resistance from the tyres etc.

AER said:

Standard car does 150-154 claimed at 220hp according to the brochure. Same car at 170 is only consuming 220*(170/150)^3 = 320hp max, or 295 if you take the 154mph top speed as your baseline.

[AER]

xjay1337 said:

AER said:

So, it seems those who worship numbers don't do maths.

Is that because they can't or because they don't like the answers..?

I am still waiting for the answers (and your/ORDs theory)

Yet to hear anything.

Your above calculation regarding top speed does not take into account vehicle weight, aerodynamic drag, frictional resistance from the tyres etc.

AER said:

Standard car does 150-154 claimed at 220hp according to the brochure. Same car at 170 is only consuming 220*(170/150)^3 = 320hp max, or 295 if you take the 154mph top speed as your baseline.

Let me quote this to preserve the definitive evidence that you really don't have a clue!

[daniel1920]

AER said:

So, it seems those who worship numbers don't do maths.

Is that because they can't or because they don't like the answers..?

I assume if using 220hp and 150mph you calculated the cdA to be 1.0909, which with 400bhp gives a top speed of 182.7mph, now if we factor in the inaccuracies you love to quote with the dyno accuracy, and the fact that the brochure figure are not 100% fact and data, and the possibility of a head wind, I would say the math can lead quite nicely to 170mph/400bph

[ORD]

Find me a 400bhp car that tops out at 170mph.

[thebraketester]

ORD said:

Find me a 400bhp car that tops out at 170mph.

It topped out at 170 (dial) in 5th gear.