Ive yet to see an aftermarket or OEM manumatic that doesnt have a very noticeable amount of lag between when you hit the paddle and when the trans actually shifts. Im wondering, is there a way to set this up that is closer to a DSG in terms of shift quality? Ive driven BMWs and Audis with this setup and it is heaven. I know the trannies used in those cars are totally different beasts than a torque converter auto but theres gotta be some way to get the shifts to change when you hit the paddle, not a second after. <snip> ...
I like the converter staying locked up for engine braking but beyond this I dont see it as anything more than a novelty. Correct me if Im wrong but I dont see this being useful on any road course and certainly not on a fast multi gear autocross track, it just doesnt shift fast enough.
Hi Matty B,
First, thanks for contributing to the discussion. I want more questions thrown out here. I'll address a few points:
1) shift speed - from the time you tap the paddle to the time the command is sent to the transmission is less than 50milliseconds, or .05 sec. The remainder of the latency, or lag, is the transmission to react in accordance to the parameters we give it for shift speed. So, it is partially dependent on how hard you are willing to work the transmission. The tradeoff is speed vs. longevity.
We are checking to see how fast we can make the shift. BUT, that being said, as you can see in the video part 2, the transmission reaction versus my input is quite short. I could probably check it in the audio track versus video timing marker, but let's see what our other info tells us first.
2) DSG vs Hydraulic transmission - the DSG is light years ahead of the hydraulic transmissions, in terms of reaction, efficiency, pleasure to drive, etc. I would love to have a DSG in our bag of goodies, but that technology is quite a few years away for the aftermarket, and will be expensive if it ever reaches because the controls of this transmission are highly integrated with the engine computer. The discussion of DSG/DCT could take this entire forum and then some. Let's just hope that one day we are lucky enough to drive a muscle car with a DCT 7 speed.
If you are, the first car will be a Corvette, which has been fully tested with a DCT.
3) Engine Braking - it's not a torque converter thing, although that does give you maximum engine braking. It is the elimination of the free wheeling clutch operation in 1st, 2nd, 3rd. We do lockup the TCC, but not until 42mph I think.
4) Novelty - well, yes! It is novel ... it's killer! Like a lot of the stuff we cram on our restomods these days. But with that said, it is far quicker shifting than taking your hand off the wheel and shifting the automatic gear lever. And it allows you to keep your hand on the wheel.
Being a pretty decent stick shift driver with good reaction times, I am not nothing but impressed with the shift speed and reaction of the Engine Braking and Paddle Shifter system, as we ship it, right out of the box.
Perhaps could some of you come to our facility in the Knoxville area, and we take the car out for a jaunt? I'm open to that, or having a demo session in Road Atlanta.