they don’t drive them hard lol. For some reason the racers get the 4 door family sedan and the sedate guys get the 2 door sports coupe. Explain that one!
I drove my friends S5. I launched it 3 times within about 25 minutes. On the third one, it slipped. Left it to cool and it was fine. But that was it. He wanted me to take it to the strip, but I declined…didn’t want to chance it. Car was in good shape otherwise.
On the B8 S4 I launched one a couple of times and had no problems. The third time, same deal. Slipped, and I just got out of it and let it cool. Same clutch, so it makes sense. On another B8 I launched it 1 time and it blasted off fine.
I think it’s the repetition. i.e. 3rd or 4th run at the strip is when guys have problems (unless the clutch is knackered from being abused at home or on the streets)
There are a couple variations of the DL501 transmission. I’d have to work with engineering to find the exact specifics, be it simply software or other changes. The 4.0T S7 also has a DL501 and we’ve really punished that transmission on race gas. It’s producing over 550 FT-LBS to all four on our dyno and has seen many redline launch control uses with no TCU adjustments. We’re able to do that with ECU changes only, it just takes a bunch of work. Ultimately, for safety reasons (It’s a stage 1 chip), we chose to limit torque on the launch. The ECU will limit the amount given until the clutches are fully engaged.
For the 3.0T S4/S5 and 4.2L RS4/RS5 once we’re near our final output, we’ll undergo testing at either Barber or Atlanta. We’ll likely run 100 to stress it the most to see how it holds up under repeated abuse around the track as once components begin heating up under these environments, they begin showing their weak points. I expected to already have a bunch of data from the RS5 in Australia during the Motor Magazine Hot Tuner Challenge, but this years event was canceled or delayed due to apparent magazine political reasons or something.
I would love to know the same considering audi blames the tune for failure when they just issued a tsb blaming the additives in the ATF for damaging the mechatronics.
That video is bonkers! Keep up the great work on the development front! I would be early in line for this if I didn’t fall in love with a car that has no transmission yesterday after a test drive. ;D
Will definitely grab the clutchpack version the next time i’m in the car for help with data!
Interesting… Is the RS5 DSG fairing better to the supercharger vs the 3.0 V6T S4/S5?
For some reason, a stage III RS5 using a 5.5k launch control makes me want to bite my nails (afraid it’ll spit out bits of the transmission after a few).
The RS5 would not have the throttle body choke issue the S4 had, so probably fairing better, especially with the R8 taking a similar 2 intake setup.
The B8 S4 is it’s own animal, thus I imagine that’s causing the delay. Not a lot of crossover with the 2 NA cars.
Talking supercharger, not the clutches.
Do we have the R8 V10 Plus DSG clutch info in that list somewhere? Or the 4.0T applications in the S6/7? That would be interesting. Those will be the biggest OEM torque level applications. Around 400 (listed) for both, right?