What are your 7AT experiences?...

azn370z · 01-09-2009, 09:33 AM

Quote:

Originally Posted by Lug

Why would it be a tic faster? The only AT's I've heard that were faster are true dual-clutch transmissions. A normal driver should be able to shift a bit faster than 500 milliseconds so it would basically have to be a gearing difference, maybe?

.5 sec is pretty fast, not dct fast but almost as fast. See how long it takes to press the clutch and change gears, and release the clutch. I think for most drivers it's going to take more than .5 secs.

RCZ · 01-09-2009, 11:45 AM

Quote:

Originally Posted by Lug

Why would it be a tic faster? The only AT's I've heard that were faster are true dual-clutch transmissions. A normal driver should be able to shift a bit faster than 500 milliseconds so it would basically have to be a gearing difference, maybe?

Tick faster to what exactly ?...it shouldn't be a tick faster from a standstill to anything because you can't launch it. After that, anyone who knows how to shift a car should be able to shift in under 500ms...thats a half a second for you math impaired folks...

Quote:

Originally Posted by azn370z

.5 sec is pretty fast, not dct fast but almost as fast. See how long it takes to press the clutch and change gears, and release the clutch. I think for most drivers it's going to take more than .5 secs.

You are certainly right, 500ms is fast for an automatic and not almost as fast as a DCT, sorry. The DCT in the M3 can do under 100ms and the DCT in the GT-R can do under 250ms. Also I don't know how much experience you have driving manual transmissions, but you press/depress the clutch and change the gear almost simultaneously, it isn't 3 different steps in practice. People who drive aggressively should be able to do this in less than 500 ms...

I'll give you the fact that the auto tranny in the Z isn't bad by automatic transmission standards, but don't think that it is better than a good driver with the manual.

Lug · 01-09-2009, 12:20 PM

Quote:

Originally Posted by RCZ

Tick faster to what exactly ?...it shouldn't be a tick faster from a standstill to anything because you can't launch it. After that, anyone who knows how to shift a car should be able to shift in under 500ms...thats a half a second for you math impaired folks...

You are certainly right, 500ms is fast for an automatic and not almost as fast as a DCT, sorry. The DCT in the M3 can do under 100ms and the DCT in the GT-R can do under 250ms. Also I don't know how much experience you have driving manual transmissions, but you press/depress the clutch and change the gear almost simultaneously, it isn't 3 different steps in practice. People who drive aggressively should be able to do this in less than 500 ms...

I'll give you the fact that the auto tranny in the Z isn't bad by automatic transmission standards, but don't think that it is better than a good driver with the manual.

+1 I think a good driver can beat 300 milliseconds in a standard.

Joker57676 · 01-09-2009, 03:04 PM

Quote:

Originally Posted by Lug

+1 I think a good driver can beat 300 milliseconds in a standard.

My understanding is 300 milliseconds is about the norm for an experienced driver in a competitive environment. I have nothing to back that up, but I know I have read that somewhere.

Mark

Crash · 01-11-2009, 03:33 PM

Quote:

Originally Posted by Lug

+1 I think a good driver can beat 300 milliseconds in a standard.

Agreed... My friends tell me they've never seen anyone shift as fast as me without hitting a gate. I'd say that I'm in the low 300's or high 200's. I'll have my friends record me shifting the Solstice when I get a chance and post it. If you can find an AT transmission in a 370 that can shift faster than me, I'll be REALLY impressed.

mspeasl · 01-11-2009, 10:21 PM

Quote:

Originally Posted by Crash

Agreed... My friends tell me they've never seen anyone shift as fast as me without hitting a gate. I'd say that I'm in the low 300's or high 200's. I'll have my friends record me shifting the Solstice when I get a chance and post it. If you can find an AT transmission in a 370 that can shift faster than me, I'll be REALLY impressed.

Is that with "Power on" or Power off"?

Crash · 01-12-2009, 02:56 AM

Quote:

Originally Posted by mspeasl

Is that with "Power on" or Power off"?

What's that supposed to mean?

mspeasl · 01-12-2009, 07:41 AM

Quote:

Originally Posted by Crash

What's that supposed to mean?

It means WOT at all times and not power down between shifts. Now back to my question. Is that with "Power on" or "Power off".

OnCallZ · 01-12-2009, 09:23 AM

Quote:

Originally Posted by Crash

Agreed... My friends tell me they've never seen anyone shift as fast as me without hitting a gate. I'd say that I'm in the low 300's or high 200's. I'll have my friends record me shifting the Solstice when I get a chance and post it. If you can find an AT transmission in a 370 that can shift faster than me, I'll be REALLY impressed.

There is no doubt that you can outshift some of the older AT's but with how far technology advanced I highly doubt you can outshift porsches new pdk, or mercedes new dsg's. I haven't driven the 7at Z yet but from what I hear it's very fast, no matter how good you are, you can't beat the future

Lug · 01-12-2009, 09:34 AM

Quote:

Originally Posted by OnCallZ

There is no doubt that you can outshift some of the older AT's but with how far technology advanced I highly doubt you can outshift porsches new pdk, or mercedes new dsg's. I haven't driven the 7at Z yet but from what I hear it's very fast, no matter how good you are, you can't beat the future

Shift time for the new AT is 500 millieconds. Sure, he won't beat a real Dual Clutch tranny, but he can certainly beat 500 milliseconds. Now the gearing really becomes important as to where you want to be fast.