Ferrari LaFerrari vs Mclaren P1 vs Porsche 918

Whoopsy, bus driver, Apolo, Unotaz and other owners, I read there's another pretty serious recall on the 918. There has been quite a few. Does it get annoying having the car in shop so often?

 

I don't understand why Lieven/Mycroft does not believe that the Grand Tour lap times were done with a standing start. Not that it really matters, as long as all cars started off the same. But I offer two bits of circumstantial evidence and one bit of physical evidence as to why I believe the laps were run from a standing start (excluding the video):

Circumstantial:
1. Lieven/Mycroft himself says that standing start lap times are a Jeremy Clarkson thing given TG history. Since this is a Jeremy Clarkson show, it makes sense that they would employ a standing start.

2. The Grand Tour test was filmed at about the same time as the Chris Harris test. Given that Harris was using a flying lap start for his test, why would Grand Tour do the exact same test at the same track within a couple of days? By having a standing start test, at least the lap time test would be different.

Physical:
I rely on the first speed marker in the GT test for this evidence. As per the video, the first speed marker was placed toward the end of the main straight (at about 1:01.20 of the video), but before the braking zone. The speeds that the cars were trapped at was 231-235km/h (143-145mph) by a pro driver. That is almost the exact terminal speeds these cars reach on a 1/4 mile (400m) drag race from various tests done.

The main straight at Algarve is 970m long, or 0.60 miles. If, as Lieven says, it was a flying start, they would come around the fast right hander and hit full throttle. Given an allowance of say 200 meters from the end for the speed marker, there would be an opportunity to go full out for 770m or just under half a mile. I would imagine that, under this scenario, all three cars would trap at more than 300km/h at that marker, not 235km/h. If they could only do up to 235km/h, I would venture to say that the owners of these cars would be quite disappointed and would want their money back! Perhaps the owners of these cars such as Whoopsy, Exoticcardreamer and Apolo can correct me if I'm wrong.

If you see the diagram of the start/finish line of the track, and take a couple of hundred meters back from the corner, it does seem reasonable to conclude that the 1st speed marker was approx. 400m from the start/finish line.

Either that, or the whole speed markers and trap speeds were completely fabricated for entertainment.

 

You are really a lovely potato that I can use to make mashed potato! (if we ever meet I will make you a nice big bowl of it)

As it's stated many times before, car manufacturers do not program their ECU for the 100+ octane fuel, something that's not widely available and they do not test those fuel even at the factory. They also do not rate their engine on those fuel either. They use real world most widely available fuel which are in the 91-94 AKI range and that's how they rate their engine outputs.

Having higher grade fuel in the tank will make absolutely no difference in engine output as the ECU is not programmed to take advantage of the higher knock resistance potential. It doesn't happen that way no matter how hard Mycroft, you, trying to argue. The ECU in cars do not read forum posts dude.

You are overly simplifying a ECU's function in a combustion process, trying to fit your own alternate universe's view into our real world.

Maybe McLaren uses one programming for all the ECU for all the markets, and their engine output are rated using 100+ octane?

Other manufacturers do not use the same programming, for example cars in certain market can have auto-fold mirrors on locking and other functions while they are not available in other markets, not even a shop computer can change that setting, cause the ECU itself has a different programming specific to each market.

Some markets also has special programming to use bad fuel, China for example will have something like that. Middle East market will also have a different programming to deal with the high ambient heat, that setting will be useless in a country say Finland or Sweden.

Mycroft, you really are like a 6 year old kid who always try to have the last sound in the back seat, thinking he who speak last will be the winner. Quite childish.

 

At Portimao, when we do hot laps, coming out of the last corner, we hit approximately 180-just under 200km/hr by the white line before the uphill climb on a good exit, we brake at approximately the 150m marker, perhaps a tad later than that. And the speed would be around 280+. The factory drivers are doing just about 300km/hr before braking.

Didn't do a race start, i.e. standing start with the 918s but we did do them with the GT3RS, by the time we brake we are doing perhaps just under 200km/hr, so yeah, it would be perfectly reasonable for a 918 to hit 235km/hr.

 

yep. the 'qualifiers' keep getting more and more ridiculous. unbelievable. and lastly don't forget...the planets must align just right, the moon must be at a particular phase, for the P1 to be optimized.

 

the dude is nuts. repeatedly googling info to patch up a ridiculous P1 defense just makes him look more nuts each time out.

 

Well that's the problem with the standard. A standing start introduces more new variables and inconsistency.

 

They program their cars for all major pump gas fuels around the world, which includes 102 RON (~95-96 octane).

Seriously dude, companies like Toyota, Nissan and Honda are huge companies. Are you trying to tell me, these huge Japanese car companies don't map cars for Japanese pump fuel? Would you like to go away and thing that one through again?

 

Simple:

1. Too inconvenient and inconsistent for a pro trying to shave time off their laps.

2. No way to effectively knock 6s off the times set by Chris Harris, Marino Franchitti and Tiff Needell.

3. No lap videos.

4. The first speed marker is in a braking zone, just like the second. So you are right, the 918 and LaF would get to 180-181mph, as per the Harris video and the P1 would get to 184mph, but then they would have to brake, before hitting the marker. Indeed, this is roughly the speed past the 200m marker in the Harris video. Even has a nice white line next to it.

Isn't it great when we have a full lap video to analyse. One thing about Harris, he knows how to run a proper test.

 

Horse crap. Caught out lying again. You really will say anything, even stuff which is easily proven wrong.

Watch the Harris video, the braking starts at the 250m marker. >1.0g braking all the way down and 1.3g around the corner.

https://www.youtube.com/watch?v=q3YPTkBRaOk

You seriously think a road car on road tyres can drop from 300kph to a 120kph apex speed in 150m. It takes 12Xm to stop from 200kph. KE goes up with V^2. The KE difference between 300kph and 100kph is twice that between 200kph and 0kph.

It takes these cars just over 30m to stop to 0 from 100kph, and it takes ~270m to stop to zero from 300kph. So 240+m allowing for temp rise from 300-100kph, not 150m. Factor in a little time to get off the brakes, before steering into the corner too and 250m is correct.

Even a 919 LMP1 car takes >150m to brake for a corner from ~300kph.

https://www.youtube.com/watch?v=ehZsfG6M6MI

You really are fantastic entertainment, keep it coming.

 

I think mycroft works for youtube

 

No, I'm just an engineer. Lying to an engineer never ends well. We see through them like an open window.

Of course, it would be highly amusing if we could actually compel Whoopsy to show us a video of him braking down from 185mph for T1 on Portimao, starting at the 150m marker. Then we could run a book on whether he'd hit the wall or end up in the wu tang clan.

 

An unemployed engineer with nothing to do but browse car forums posting about cars you don't own? A Mclaren "engineer" who was given this job because you weren't good enough at engineering anything? A student in school to become an engineering? You took one engineering class?

 

Or even just a random idiot on the net who's still smart enough to know that no 918 on road tyres can brake down from 300kph for a 120kph right-hander in the space of 150m, when even an LMP1 car needs >150m to slow from a similar speed, hitting 2.1g as it does. That's a car half the weight of a 918, on slicks, with several times more downforce and a top notch pro driver.

But wow, Whoopsy reckon a stock 918 can stop from 300kph a tad later than the 150m mark.

Maybe he should review around 1:03 in this video and tell the Le Mans guys what they can do to improve the ****ty braking on their LMP1 cars.

https://www.youtube.com/watch?v=ehZsfG6M6MI

 

Engineer, who works for the marketing department of McL? Lol, this time bad for you and for the very first time... good for McL, that didn't gave you more responsible position...

Btw, how many post you (THE SMART ENGINEER) are going to slam here, before understanding, that Whoopsy wrote by mistake 150m., instead of 250m., replying with his personal experience to another member here??? Have you seen Portimao by yourself, except on CH video?

You are really very, very desperate... lol

 

I seriously doubt GT would have put a speed marker in the braking zone. What would the point of that be? They have been doing car tests for a number of years. They are not stupid.

 

You should have just cut it right there

 

It's not necessary even to discuss this. Nobody in his right mind will put SPEED marker in the braking zone. Only Mycroft in his desperate BS from all over the net...

The speed marks are, where they should be. In the case of Marker 1, it is just before the pit exit on the attached graph.

For comparison, in the CH 918's lap, it's just before the braking zone at 250m...
Image Unavailable, Please Login
Image Unavailable, Please Login

 

Not sure I follow this, in my 91RS round Silverstone down the Hanger Straight, I see 158-159 MPH, I brake at the 80Mtr board to take the right hander stow corner at about 80 -90Mph, Under braking I see over 1.6gs. And 1.47 Lateral.

I take it you are aware of the braking advantage's corner speeds , that the 918 has over the RS?

I have the read out from G Box if required

 

It's ok buddy.

He made me go to Youtube to rewatch a Portimao video to refresh my memory on that track as to what distance marker is on the top of the hill.

Yes it is 250m that we should have start braking, by the time the foot is on the brake pedal the marker is saying 200m.

But when one is driving, one doesn't really look out for the scenery or what's written on them anyway. Maybe he does, cause he is driving via watching Youtube videos. Watch me, I am gonna mix up more track markers this time next year as Porsche will be doing a couple more 918 track events in 2017, Hockenheim and Paul Ricard. Might go back to Leipzig for more Porsche courses and will also be spending a lot of time at my own track.

As for Mycroft as an engineer, he is a great internet keyboard engineer! Always look for typos. Good stuff from him!

 

Or he wrote '150m' to try play into Westview's assertion that the speed check wasn't in the braking zone.

 

Nice try matey. But the pit exit is after that point. You can even still see white shaded area present at the right edge of the pit exit that extends to beyond the 200m marker.

Secondly, post up the speeds at checkpoint 2, and then look at the peak speeds Harris makes on the straight down to Torre VIP. Higher right? Therefore checkpoint 2 is in a braking zone too.

This is from Google Earth, note pit exit, note yellow measurement line. Note white line where yellow line starts. 200m marker is before pit exit. You can clearly see the 150m, 100m, and 50m marker thereafter too. The lengths some folk will go to to make a false case.

Furthermore, you can see the line to divide pit exitees from traffic extending to between 50m and 100m marker.
Image Unavailable, Please Login
Image Unavailable, Please Login

 

I take it you are unaware that even LMP1 cars brakes before the 150m marker at 300kph, as per the video I linked. It makes 1.6-2.1g.

https://www.youtube.com/watch?v=ehZsfG6M6MI&t=63s

And that is on the level. If you look at the pictures above you will see the braking zone at Portimao is down hill, hence why g increases near the end. You will not see 1.6g braking on the level in a Porsche road car, uphill maybe.

 

Looking forward to, "Your RS, like your 918 offers a higher level of performance than the others.".....lol

@ Boyko23
You have email of my G Readings can you please Post Up..

 

Here, but be prepared this guy to ask you for your Vbox data, unedited video, valid ID card, papers for the car and indipendent footage from NASA...
Image Unavailable, Please Login