Renault RS27 vs Ferrari 056 vs Mercedes FO110X

All that has to do with the power train, gearbox, clutch, fuels and lubricants, etc. Generally the mechanical side of Formula One.
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JohnsonsEvilTwin
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Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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After much debate, I have started a thread that will help clarify the differences between some of F1's engines.
If there is anyone out there with accurate information, that can be independantly verified... other than "the teams said its around this figure, so it must be true", then I would love to hear it.

Bhp, Nm(torque), Heat dissipation, Fuel consumption, Packaging and anything worth mentioning will all be factors up for discussion.
More could have been done.
David Purley

donskar
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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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JET, your (very appropriate) proviso:
accurate information, that can be independantly verified
is likely to make this a rather sparse thread.

I hope I'm wrong . . .
Enzo Ferrari was a great man. But he was not a good man. -- Phil Hill

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JohnsonsEvilTwin
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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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Indeed Donskar,

But I hope that just by its existance, it saves the Red Bull/Ferrari thread more anguish. If it achieves that, job done. :D
More could have been done.
David Purley

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mep
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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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Hey if anybody has some performance graphs of engines it would be awesome to get them. Don't need to be from 2010 for me its fine when they are 10 or 20 years old.

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747heavy
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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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mep wrote:Hey if anybody has some performance graphs of engines it would be awesome to get them. Don't need to be from 2010 for me its fine when they are 10 or 20 years old.
some stuff, you may find interesting can be found here:

http://jautomobiles.co.jp/SAE2002-01-3359_HA.pdf

performance of the Honda turbo engines:

Image
"Make the suspension adjustable and they will adjust it wrong ......
look what they can do to a carburetor in just a few moments of stupidity with a screwdriver."
- Colin Chapman

“Simplicity is the ultimate sophistication.” - Leonardo da Vinci

segedunum
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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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Virtually impossible. Formula 1 is a very secretive world, so asking for things to be independently verified is going to reveal nothing.

There's some information out there - acoustics, GPS information and articles like Scarbs's as to how Ferrari gained fifteen horsepower - but it will be questioned by all and sundry, as we have seen. That's just horsepower as well, which is an engine's real defining characteristic. If you want better fuel efficiency or heat dissipation then you use the horsepower when you need it and turn it down at other times.

In addition, teams are not going to publish accurate information and they're going to keep secret what they know about other teams and engines. To judge even just the horsepower on slim information you have to discount all other factors until you are left with only horsepower as a variable.

It seems to be a really emotive subject it seems, but if there's a slim, slim chance that someone has some other gunsmoke then I'd be all ears.

Some ball-park information from 2009:

http://www.jamesallenonf1.com/2009/11/a ... e-in-2009/
"I’ve checked it out with some of the F1 engineers and it seems that the data is a pretty accurate reflection of the numbers they are working with."
Original article to chew over (if you're German, delve in and translate!):

http://www.auto-motor-und-sport.de/form ... 84834.html

Rough translation:

http://translate.google.co.uk/translate ... =&ie=UTF-8

The Toyota was the least powerful. The biggest emotive subject was that of Renault. Whereas the 40 horsepower deficit bandied around by some might be a little sensationalist, as we'd suspected in a thread quite a while ago, the Renault at the end of 2009 was between 15 and 20 horsepower down on the acoustics give or take. However, the sound analysis might be different from the vehicle data that some are collecting - which we don't have unfortunately.

Some useful fuel usage data. This is a nice piece of work:

http://f1numbers.wordpress.com/2009/12/ ... -fuel-use/

The Mercedes is apparently powerful and frugal for the power it uses, so no wonder it's a wanted engine!

That might be as good as it gets. We don't have absolute accuracy, but we have a reasonable indication. Interestingly, even with homologation there can be some profound differences.

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JohnsonsEvilTwin
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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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I cut a couple of quotes that are quite important, in context to the thread
The sound analysis related to the power at the flywheel. Interpolations on the basis of vehicle data, however, have revealed that McLaren and Force India in fact the rear wheels up to 40 hp more than in vehicles with engines in competition. Obviously go in the drive train of the other cars lost up to 15 hp.
Inconsistent and inaccurate, becuase it only measures out to fywheel and not drivetrain.
So when it is so even, what do they say are the other important factors?
And then there are three other parameters, which must be: fuel consumption, stability, cooling demand.
funnily enough Renault are said to best in class in those 3 areas.
note the italics


The figures bandied about are so vague and inconsistent they are only ballpark at best. They even say Cosworth advertises its engine at 770bhp, but when Renault tested it, it came out at 740bhp(still not bad considering).
Basically We are no closer to comparing these 3....yet.
More could have been done.
David Purley

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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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You really can have no idea without seeing raw data, all the motors will be very close mechanically, i imagine the subtle differences in tuning are the only difference.
The 18,000 rpm rev limit may mean some engines had stepped back in terms of bore and stroke.
Remember ilmor in 1999? That motor had a small bore (93) and revved to 17,000 idea being the port sizes and combustion chamber are matched to the rev range. A massive bore and intake valve would be a hinderance to a low revver, think of cosworth - 98mm bore and a 22k rev limit before the imposed 19k then 18k.
I heard Renault had big dramas with that aspect and were allowed a mild retune, dont quote me.
This much can be certain - a 98 to 95 bore, a 40 to 44 intake valve and all the cam lift and duration that is mechanically possible for an airspring.
Pick some numbers and play with a PC dyno software to get a feel for the numbers involved.

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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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[...]
JohnsonsEvilTwin wrote:Inconsistent and inaccurate, becuase it only measures out to fywheel and not drivetrain.
In what way? At least it discounts other factors and is more accurate of raw figures you might get on a dyno.

However, what you point out merely makes things worse - that makes the power gap potentially far bigger with on-track data taking into account the whole drivetrain as the article auggests. We don't have the accurate on-track data unfortunately, but your argument isn't helping you. Did you not read that part of the article?

In terms of equalisation though I believe they only look at raw dyno figures for sensible reasons. It's about the engine only.
So when it is so even, what do they say are the other important factors?
But we have evidence that it is not even........ You can't just say that in light of the evidence and make it true.
And then there are three other parameters, which must be: fuel consumption, stability, cooling demand.
funnily enough Renault are said to best in class in those 3 areas.
note the italics
Yes I do note the italics. Do you know what that means? It's useless. The only things we have any remote figures for are power and engine consumption. Have I been taking crazy pills or something JET, or have you chosen not to read what's been written yet again?

The fuel consumption argument has been thoroughly debunked above. The Mercedes is the most fuel efficient given the power it has and of course Renault will consume less fuel, because the engine is less powerful. The amount is too small to gain any real advantage. What Renault cannot do is turn up the power on the engine for two or three laps to jump someone who has pitted and then turn it down again. That's the point even Red Bull themselves have made and everyone has ignored it.

Its all relative. Consumes less fuel? Well it will to a small extent because the engine has less power. Cooling? Well, the engine that generates less power might well run cooler. Stability? What does that mean?
The figures bandied about are so vague and inconsistent they are only ballpark at best.
Can you not read JET?
"I’ve checked it out with some of the F1 engineers and it seems that the data is a pretty accurate reflection of the numbers they are working with."
So it's your word against someone who has done some investigation and talked to people.
The figures bandied about are so vague and inconsistent they are only ballpark at best. They even say Cosworth advertises its engine at 770bhp, but when Renault tested it, it came out at 740bhp(still not bad considering).
Cosworth might well have estimated 770hp before they had upgraded their 2006 V8 to the current regulations, but that doesn't prove or disprove anything. What are you hoping this little nugget of information will do for you?

[...]
Last edited by Steven on 05 Jan 2011, 23:35, edited 3 times in total.
Reason: Removed some ranting

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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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[...]
Last edited by Steven on 05 Jan 2011, 23:37, edited 1 time in total.
Reason: More ranting...

marcush.
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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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if we really want to base the discussion on that AMS piece then one thing is very clear:

between teams the difference in HP they have measured for the engines in competiotion was between 20 and 40HP ...so thats a staggering spread and tells us that we are discussing about a power advantage in the size of the measuring spread..should tell you something,boys...
the article also states that according to those inter teams comparisons the measuring mistake was big enough to have BMW and Mercedes swap 1st place in power..that is .5 percent of mistake alone...ouch.

The huge discrepance stems from one of the teams also accounting for drivetrainlosses ...as I said before in another thread if your tranny has too many gears or binds in certain conditions or does not have the latest bearing or gear or whatever ...you will lose more than your engine could ever make up.

so ,IF that article is seriously researched we know that it is around 2% of spread in engine power but a LOT more spread in transmission efficiency
we also can conclude that for 2% less power the Renault consumes 5% less fuel..we should also account for :less power =less heat to be rejected =smaller rads ,less air through the sidepods...

so the page is not a black and white ,and it will never be ...Renault has had all
their cars running very competitively be it customer or works chassis so anyone suggesting this engine is not representing a competive package is reaching a bit short....

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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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Yes, this topic can lead to some "interesting" responses.

Don't mean to muddy tne waters ever further, but another point must be considered: power actually delivered to the driven wheels is what really counts. A more efficient transmission/diff could easily make a difference of several HP.
Enzo Ferrari was a great man. But he was not a good man. -- Phil Hill

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JohnsonsEvilTwin
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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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donskar wrote:Yes, this topic can lead to some "interesting" responses.

Don't mean to muddy tne waters ever further, but another point must be considered: power actually delivered to the driven wheels is what really counts. A more efficient transmission/diff could easily make a difference of several HP.
+1 That was precisly my point Donskar. HP does not mean jack without torque. Torque is the actual power and bhp is the rate at which it can be delivered(unless my physics teacher was a total idiot.)
So measuring HP is only giving you half the power story maybe less.
marcush. wrote:if we really want to base the discussion on that AMS piece then one thing is very clear:.........

the article also states that according to those inter teams comparisons the measuring mistake was big enough to have BMW and Mercedes swap 1st place in power..that is .5 percent of mistake alone...ouch.
+1 I didnt see that Marcush, but I do understand that using the sound measuring device can have a very wide range of error.
I remember Ross Brawn saying thats how they discovered Mercedes were using Berylium in their engines in 1998/99. "We knew they could rev higher with a longer stroke, giving them advantages" But as for specifics? Nothing.
marcush. wrote: so ,IF that article is seriously researched we know that it is around 2% of spread in engine power but a LOT more spread in transmission efficiency
we also can conclude that for 2% less power the Renault consumes 5% less fuel..we should also account for :less power =less heat to be rejected =smaller rads ,less air through the sidepods...
+1 Marcush, as ever you talk sense. [...]
It would not surprise me that since the refueling ban, the Renault V8 would actually be a better engine to have allround.
Maybe not at Monza, but carrying less weight(through better fuel consumption) and having less heating issues round a place like Hungary or Monte Carlo wont harm you at all, witness Kubica round the Monte! :lol:
Last edited by Steven on 09 Jan 2011, 12:13, edited 1 time in total.
Reason: Stick to the subject please
More could have been done.
David Purley

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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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far from thinking I know it all in fact I´m sure I do not grasp the whole story I still wonder why RedBull has not switched to Ferrari or Cosworth or just buy the IP of the BMw engine with all the human recources in Munich if the holy grail was to be found there when the other option was not going to materialise...
BMW had so much money down the drain when leaving F1 they sure could not ignore the call from Didi waving with a bag full of money..no I don´t buy this never ending story ..t´hats pure politics aimed at destabilizing other teams and distraction...or maybe even a bad habit they cultivated over the years...I wonder if the Renault people are too happy to hear their customer air bad things about their product..maybe the key people don´t read any english publications...or it is initiated by them to try and get a waver..

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JohnsonsEvilTwin
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Re: Renault RS27 vs Ferrari 056 vs Mercedes FO110X

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marcush. wrote:thats pure politics aimed at destabilizing other teams and distraction...
Exactly why the main voices regards engine "parity" were Horner and Newey.

Why didnt Renault come out and say anything? Funny also how Red Bull pinned the blame on Renault for the spark plug failure(in bahrain you may rememer) when it was actually proven to be the EDB over-run that caused the failure, a Red Bull specfic issue.

Alot of Red-faces :oops:
More could have been done.
David Purley