Jean

I thought I would post this separately on a new thread instead of hijacking further the now raped 60-130mph thread This is a classic, Auto Motor Und Sport test of 4 of the fastest cars in the world back then. Sorry it is in German for English readers, but I think you will appreciate these tests even back then. Check out the width (rather narrowness) of the CTR compared to the 959 and others, CD of 0.32, CTR weight 1222Kgs = 2700lbs or so, 100-200kph (62.5-125mph) in 6.5secs. for the CTR, 9.6 secs for the 959, and a very respectable 6.4secs for the huge F40.

Thanks goes to a friend for sharing his private test collection with the RL community.

kennyboy

The CTR is still unbelievable isn't it? I can't imagine what impact it had in '88

TB993tt

Jean, that is brilliant
Can you thank your friend a lot for this....I think it is great the more of these classic tests we can scan and post, it keeps them alive for many to enjoy

One thing to come out of that test which I am really chuffed (read smug) about is the measured weight of the CTR of 1222kg.......
I weighed the one I owned (carbon doors/wings/hood) at 1226kg and always disputed the 1100kg claim by Ruf, which in reality was probably a dry weight but was oft quoted by others and used to bug me a bit 'cos it was ~120kg short of reality and didn't do the CTR's acceleration numbers justice !

Jean

Just got some more info....interesting:

"I forgot to mention that the 959 of that test was a very special version with 515hp and 561nm, with bigger turbos from the 944 Turbo Cup, higher boost 1.1 bar instead of 0.8, a longer 6th gear, a lowered body (2cm), 0° camber? at the rear wheels. The car was especially prepared for that test with the intention to beat the CTR…"
The CTR still grilled it.!

TB993tt

Here is a results/spec table from a similar test of the era Circa '88

Jean

Oups! And that RS was a widebody 930!
I have the test, I will post it tomorrow

Stummel

IIRC Konstantin said that this 959 had the 2 turbos work parallel and not as a register bi turbo.
The article says different, what makes no sense if they used 2 identical turbos from the 944 cup.

Stummel

The article says that in Nardo you have 0.2 g lateral acceleration.
The CTR is therefor pressed with 1300kg to the ground.

Does that make any sense? Do they mean 1.2 * 1222kg?

N51

Jean,

Thanks for that.
A few easy observations(if I squint real hard): The CTR rides on very narrow tires. A likely contributor(traction) for it lagging the 959 early on, but a positive contribution to how it makes up the early loss. Amazing that it could find traction to produce those numbers. It would be an interesting experiment for those of you that have established baseline acceleration numbers to fit narrower tires. For the higher hp cars, probably a net loss due to lack of traction, but performing the test from a higher mph value may result in some valuable data.

The RSA styled tail and smallish intercooler makes my thoughts wander. But in light of what has been discussed here, it would seem the CTR would be subject to considerable heat soak?

As always, gotta respect those nb cars!

Noah

Jean

Stummel,

I am guessing that Konstantin must have had this data from this same test. I am not sure though, this is what the test is saying I think.

When it comes to these tests we need to be a bit careful... In this instance the YYellowbird zero deg camber and I am sure toe, probably lowered etc.. comes to say how serious these people are about the numbers posted in the mags. I guess the same applies to weight TB, as you mentioned earlier.

Here is another one. This is another article testing the 959Sport version, funny enough the acceleration numbers are the exact same as the test posted above So makes me wonder whether AMS really measured the data or simply took it from the same Nardo test they did with the "Special Wokrs 959 car" that was above. Check out the 0-200kph data.



You want more fun?

Sport Auto tests a 959 "Sport" against the CGT in October 2006, and gets, this car belongs and is driven by Walter Rohrl, check out the license plate, it is the same as the one in the Nardo test!!! Walter Rohrl (sp) himself said that this was one of 6 special race build 959s by the factory...

Jean

N51

Good observations.

I would just like to say that the tires fitted on this Yellowbird are narrower than the usual (If I am not mistaken, based on data I have).

However the Yellowbird has very good "squatting" abilities, meaning grip is greatly improved off the line. In a recent test performed by R&T, the Yellowbird posted a 0-60mph in 4.0 seconds and the first 100feet acceleration (in average Gs) was only bettered by 1000hp Vipers and race cars, thanks to softer suspension and its squatting characteristics (also taller gears)

The narrower tires have two main advantages in such tests (and drag racing!) since they definitely reduce rolling resistence at higher speeds, rolling resistence increases with tire deformation and hence with higher speed, and, they also provide reduced aerodynamic drag as a result of the reduction in frontal surface area. Add to that the zero camber as mentioned etc..

TB993tt

The CTR doesn't suffer from lack of grip, with the stock CTR wheels and tyres (255X17 at the back from memory) its combination of low weight, gearing and low end torque with big area under the curve mean that it deploys its power very well.

One day I went out trying to get a 0-60mph best time (these were the days before the internet and 60-130 measurements) using a G-Tech meter and on a relatively low grip surface got a 0-60mph best time of 3.4 seconds......I know Adam has also managed this number in their car -the CTR grips

N51

Well, I was sure someone here would know more than me. :-) Thanks for the additional info.

TB993tt,
My thoughts were derived from the posted test. Again squinting, I believe it shows the CTR shod with 225's(rear). Considering its' acceleration, you are correct in stating it has grip. While I understand the relationship between suspension and how it aids grip, I still marvel that it does so with those narrow tires. Certainly a testament to a great tuning house.
This information is directly beneficial to me as I consider my project.
Thanks to all.

Noah

Stummel

The first test says that the turbos are NOT in parallel like in the 993tt.
I do not know the word for "Registeraufladung" but it means that first one turbo is used and the second one comes to play at higher revs.

If you could please post the first page of the later test there is something written about the turbos.

I am happy to provide translations where necessary.

Thx

911/Q45

I think the english word you're looking for is "sequential".