RS4 Rolling Road Numbers - Another View

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He's not an American, he doesn't have a Hemi.

I won't pretend to understand the dicussion at hand with rolling roads and I don't care for politics & wars. At least we can make a decent cup of tea, see our penis when we look down and tell an ally from an enemy.

It's clear that although engines are built to high standards and specs, one will always vary from another maybe due to the way it was run in, the quality of fuel and maybe the fact it's coming up to its service interval. That said, a 100bhp loss in the real world compared to a bench tested manufacturer statistic is pretty drastic. 30-40bhp you could live with but I'd be gitted to be 100bhp down!
 
Couldnt this argument be settled by 1\4 mile between a RS4 and a car of the same/similar PTW ratio. If its close, thats good enough.

All this rolling road bullsh1t and paper figures mean No Swearing!
 
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Write to Top Gear and see if they'll abuse yours and somebody elses car for you.

Any test will be subjective and unless you remove the engines from a few RS4s then bench test them in some controlled environment you're going to have a hard time getting a decent idea out the true outputs. It's clear from the OP that something isn't quite right.
 
RS4er said:
not a measured, instantaneous physical 'force' like torque (M = F cross r, yes engineers call 'torque' Moment, 'cross' means the multiplication of vector quantities, not magnitudes, because the qtys are always not aligned, like an axle)
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Measuring an instantaneous physical 'force' will not make it a moment any more than measuring pressure will give you a force, for example.

To "engineers" (which is a silly thing to say anyway) torque and moment are essentially the same thing, though may have slightly different connotations. A moment could be considered a force multiplied by a distance whereas a torque might be percieved as the action of screwing (no jokes thank you ;)) about a point.

Also, thank you for your crash-course in vector products, I will be sure to think of you in my engineering exams in future. Your explaination of why vector products are used is wrong and unhelpful and might make you appear slightly more credible thank you actually are. The vector aspect is inherent to the quantities used, but in this case is unnecessary as the direction of rotation (and hence torque) is obvious. Therefore the cross-product simplifies to a scalar multiplication, and your entire section was pointless.

EDIT: You mention above that you know "a bit about engines, engineering and such..." I'm interested to know what your engineering background is, and why you feel the need to try to overcomplicated things by introducing some of your 'engineering' (and i use that term loosely) knowledge, though the answer to those two questions may be unrelated.
 
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Housey said:
My GT3 (383bhp) pulled 158mph in 3/4 mile from a standing start, my RS4 could only manage around 160mph in around 3/4 mile (the limiter was at 160mph and that is where I hit the limiter ish) from a rolling start where I was doing around 60mph at the start.
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While I agree with most of what you've posted in this thread, I think you've chosen a bad example to backup your point to Mr. Rs4er. 911's have a long history of outdragging more powerful cars due to the superb power delivery characteristics of their engines. Even if the RS4 made quoted power I'd still expect your old Porka to demolish it from a rolling start.
(Porsche clearly use voodoo in their engine production facility)
Housey said:
The valve coking is a fact, I've seen it, Audi acknowledge it and that will have an impact on power no matter what our septic believes.
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Freudian slip?
 
The_Dark_Side said:
While I agree with most of what you've posted in this thread, I think you've chosen a bad example to backup your point to Mr. Rs4er. 911's have a long history of outdragging more powerful cars due to the superb power delivery characteristics of their engines. Even if the RS4 made quoted power I'd still expect your old Porka to demolish it from a rolling start.
(Porsche clearly use voodoo in their engine production facility)
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Oh I agree, it was simply one real example but I think you missed the fact that the Porsche was actually from a standing start and the RS4 was doing 60mph+ when it started and at the end of 3/4 mile the Pork was within 2mph. On the same rolling road (in 4th gear, this is being missed too as it perhaps doesn't fit the premise of the argument being made...) my GT3 showed 383bhp and my RS4 showed 366bhp. The RR where it was run was neither a Porsche or Audi specialist, didn't sell any tuning options for either and it was part of an open day we run every year at MTorque.

The_Dark_Side said:
Freudian slip?
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No slip ;)
 
InvaderGIR said:
Pretentious much? :rolleyes:

I got as far as that and gave up, I have no time for people that think they know everything and think everyone else knows nothing.
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I have time to educate the uneducated, not the uneducatable ;)

nice deflection though...it's as I thought, you're a self proclaimed expert...in other words, you don't know any more than you've memorized, and do not understand any of the fundementals...
 
RS4er said:
I have time to educate the uneducated, not the uneducatable ;)

nice deflection though...it's as I thought, you're a self proclaimed expert...in other words, you don't know any more than you've memorized, and do not understand any of the fundementals...
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:rolleyes:

I know I don't know everything, you're on about deflections, you just mirrored what I said. :rolleyes:
 
The Mad Rapper said:
I logged in just to reply to this. I was with you until the last two paragraphs, you may have went a little far in embarrassing the guy, but perhaps he deserved it.

However, you need setting straight:

The UK is hardly marginalised by anyone, so please do stop talking crap. We are a tiny nation, but we punch well above our weight in any sphere of influence you want to mention.

Don't start parading the US military as anything to be proud of. I served 14 years in the British Army and served in multiple operational tours with the US. I saw nothing to feel in awe of, your tactical awareness in particular is utter ****. You may have weight of numbers, but so do the Chinese :p

I will always be critical of Tony Blair's decision to follow GWB into Iraq, but at least Tony Blair can string a ******* sentance together! GWB is the WORST President in history, but hey, guess what, the American dream is alive and well eh? Even retards get their chance!

If you want to come on here and get arsey with someone that's one matter, but DO NOT start slagging my country off you pompous ******* *****.
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at least there's one Brit with nuts...kudos

I spent my time in the US Army and trained and operated with Paras and SAS...got nothing bad to say...
but I gurantee in a confrontation with Rangers, Marines, etc. there will be plenty of dead on both sides...

I would put elements of the US Military against any, with the exception of possibly the Isreali's and some Russian elements, or possibly the Kurds, Pakistani's or some battle hardened Iranians units...

battle breeds compentency, not technology...

as far as 'parading' the US military as something to be proud of, I'm not doing that...I am STATING loudly that they are something to be proud of...

we have our Viet Nam, you have Northern Ireland...

so if you ewant respectful dialogue, OK, if not, pound salt and f%$& off...
I don't care which ;)
 
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