Felix

Not that I'm doubting the the S wing produces more downforce but this is one of the few times I've seen this statement in print. Can you expand on where you read/heard this?

mw911

Phelix,

to be honest, we do not have clear data on that, its only a guess.

Michael

mw911

Jean,

the low weight might also have to do with the fact, that the car originally was a n/a car in which a turbo engine had been transplanted. (As a transplant surgeon I do love this procedure)

So , there is no front drive systen, etc. etc.

The front hood is made of alu, the doors are not.

The fenders are normal , I even had to do an additional kevlar isolation to the rear fender, because its so near (narrow body) to the exhaust components and melted away several times before that isolation.

In the interieur, front seats are GT3 seats ,the rear seats have partially been deleted, a small roll cage (in german : Überrollbügel) has been added.

I will send you the two files as PM this evening or tomorrow evening, the last two files are extracted from one run.

Yours

Michael

PS.: By the way: I do love your car also, and that since years already. It is the best example of how one can modify the aircooled twin turbo to a really "Newton" beast (5.6 from 100 to 200 right?) using modern technology.

TB993tt

As you/we know there is no data in the public domain about the ttS wing but knowing Porsche philosophy with their Aero kits one can assume it improved the lift situation whilst maintaining the existing low drag numbers - Marc Bongers states this (paraphrased) in his book

Just to reiterate on what we know, Porsche stated zero lift for stock tt at 250kph (inferring lift after that speed) when the 993tt was introduced. Sport Auto measured 17kg lift at the rear in the Merc tunnel at 200kph (they didn't measure front numbers in those days) so do we believe SA ? Probably (that is what it feels like to me anyway ) can we assume the ttS aero reduces this lift somewhat but based on my experiences not by that much when going over 170mph ? so at 250kph the ttS aero probably has still "some" lift but definately NOT positive downforce (yes I realise it is in the terminology since they are the same thing really )

Guesses by intelligent drivers who have good experience with their cars at very high speeds are certainly worth something in my book.... MOD followed me at 180mph down the airstrip and commented how my rear end was moving from side to side quite noticeably - it has always seemingly done this whatever aero I had on (but one gets used to it so it is not as scary as it looks/sounds) so I for one don't think that I have got anywhere near a zero lift setup at or over 250kph !

I am going for OEM GT2 wing next which (according to Ian Kuah) when set at its flattest position will give zero lift at the front with "some downforce" at the back (this is with OEM GT2 front splitter which it a bit different to my FVD jobbie but I'm hoping). The numbers obtained at 270kph with the 993 RSR wing set up which is pretty similar was 11.9kg rear positive downforce with the flat wing....

mw911

Hi Jean,
PM sent

Michael

RS38

Michael, where are you from? (in germany)

PN?

Jean

RS38, mw911

I will be in Germany July 25th-30th exclusively for car/racing related stuff, I would love to see some of these beasts in action.

RS38, you obviously seem to be close to 9FF, seeing that 993TT in person would be very interesting. I will be shuttling between Nurburgring and Hannover, passing by Verl at Konrad Motorsports so Dortmund (9FF) is on my way.

Let me know if this is feasible.
Cheers

mw911

Dear Jean,

PM sent

Yours

Michael

mw911

[QUOTE=TB993tt;5557373]Michael, thankyou for sharing

Your acceleration is strong, 0-300kph in low 28s superb... I would love it if you could do a "coast down" run from high speed say 250+ to 180kph and let our gurus Jean/Juha crunch your aerodynamic data to see what improvements you have been able to make ?

Dear Jean,
via E-Mail I did sent You two files containing 2 different "coast down" runs (same part of the autobahn, first with tail-wind, second in the opposite direction, thus with head-wind), which I did this morning.

I wish you a great time on the nuerburgring next week

Michael

mw911

I guess some of you would be interested in the following:

Having experienced multiple "pop offs" of my boost hoses at high peak boost I (and multiple other customers) convinced the SHK people to provide us with modified boost hoses.
These are made by the same manufacturer as the OEM ones but LONGER and with additional enforcements at the lower end (to eliminate the lower end popping off, which is, however, rare).
The theory is, that these hoses can be mounted with virtually no tension thus making "pop off" more unlikely.

At least fitment was perfect....

See the pictures attached

Michael

Ziad

Michael,

I'm interested. How much are they going for please?

Thanks

mw911

Hello Ziad

PM sent

Michael

Full Boost

Ok,

Me too i spose...

Thanks\
Simon.

mw911

OK, of course...

Michael

pete95zhn

A big help to this pop-off issue would also be replacing those mickey-mouse hose clamps with something beefier.

Pete