[Mr. 5]

I wouldn't consider myself to be the slowest shifter in the world but I know that my shifts aren't the fastest either.
I know for a fact that the Autos will shift faster than any person in a manual, but I'd like to see some data on this.

As most of you know, I just purchased a Vbox and it's a crap load of fun.
What I've been doing lately is measuring my shifts, and it looks like my average shift is about 3 tenths of a second. .3!
That sounds like a long time but I'm really curious with what others are doing and I'm especially curious with how fast the autos are shifting.
Below is one of my faster shifts but I really doubt that's going to happen that often.

I know that this is a total estimation but it give me an idea with how much of an advantage autos have or don't have.

[Jonny550]

wow the vbox sounds like 2 tons of fun..

[135forthewin]

Supposedly the steptronic transmission in the 335i will knock off 100 millisecond shifts, so .1 seconds.

I've got a 135i, and all my friends with 335is say my car shifts much faster than their cars, so who knows how fast my car is banging off shifts.

[gt3fever]

.3 sec is actually pretty damn FAST for MT...

[jpsimon]

hey mr 5, can you post up a graph of throttle/ actual throttle/rpm/boost. I'm curious how the flash handles the mid-shift.

.3 is pretty quick though. it's hard to go much faster on a regular basis

[O-cha]

Originally Posted by hipertech

.3 sec is actually pretty damn FAST for MT...

Originally Posted by jpsimon

hey mr 5, can you post up a graph of throttle/ actual throttle/rpm/boost. I'm curious how the flash handles the mid-shift.

.3 is pretty quick though. it's hard to go much faster on a regular basis

You guys are both nuts, .2 sec or less is pretty easy (for a skilled person) to do consistently.

[jpsimon]

I guess I'm just lazy, ~.3 is my average I'd say

[OpenFlash]

It should be obvious but it really depends on how you measure shift time. ie, from what point to what point. I (and jp simon) measure it somewhat conservatively using PROcede datalogs which sample at a very quick 30/sec. We measure shift time from the point at which the throttle starts to close to the point it goes full throttle again. With these conditions, a really manual fast shift is right around 0.3 second.

If you decide to measure shift time from the point of where you start to throttle lift to the point in which you start to get back on the throttle, the time will fall to 0.25 second.

Or if you measure it from how long you are at 0% throttle between gears, it falls even further to just 0.1 second.

shiv

[AndreyATC]

So, what are the measuring points of AT?
I've seen many times when AT vs MT stayed dead even during shifts
And AT claims what 0.1?

Mr 5, 0.3 is pretty good in my book
I'm sure 0.2 is doable, just might not be so concistent

[Mr. 5]

Originally Posted by shiv@vishnu

It should be obvious but it really depends on how you measure shift time. ie, from what point to what point. I (and jp simon) measure it somewhat conservatively using PROcede datalogs which sample at a very quick 30/sec. We measure shift time from the point at which the throttle starts to close to the point it goes full throttle again. With these conditions, a really manual fast shift is right around 0.3 second.

If you decide to measure shift time from the point of where you start to throttle lift to the point in which you start to get back on the throttle, the time will fall to 0.25 second.

Or if you measure it from how long you are at 0% throttle between gears, it falls even further to just 0.1 second.

shiv

Yah, I guess I really didn't think about using the BT for this.
I just noticed the graphs when using the Vbox.
I'll look at some previous data that I logged in the past with the BT.

[htoudiee]

Agreed. My knowledge is limited in this area but I think this is the most accurate formula for measuring the pure "shift's" time. We have to measure what the drives has control over if we are talking about fast shift times and this is what the driver has control over... the delta between when throttle starts to go down from 100% (towards 0%) to the time the throttle starts to go back up from 0%. Now I understand in our cars there are 2 values, one is the intended throttle position (what the driver's foot does), and one is the actual position (one that the ECU dictates to the TPS). I'd assume we need to measure the intended throttle position in the formula since the car as we all know (the manuals) had a lag in fast shifts from when the driver wants the throttle to open to when it actually starts openning.

Originally Posted by shiv@vishnu

...If you decide to measure shift time from the point of where you start to throttle lift to the point in which you start to get back on the throttle, the time will fall to 0.25 second....shiv

[Mr. 5]

Originally Posted by AndreyATC

So, what are the measuring points of AT?
I've seen many times when AT vs MT stayed dead even during shifts
And AT claims what 0.1?

Mr 5, 0.3 is pretty good in my book
I'm sure 0.2 is doable, just might not be so concistent

I've seen those vids also, but IMO, the only reason why the MT stayed dead even with the AT is because the MT has more power than the AT.
It's either that or the gearing.

[scheherazade]

I like the velocity graph approach.

Shift starts when you start losing speed.
Shift ends when you start gaining speed.

The results are what matter, not some intrinsics of shifting.

-scheherazade

[scalbert]

I've use inertial, RPM and throttle for calculations and I would say the average is about 0.3 seconds.

[okix]

I cant remember my exact shift times but I can get that. Here is a video of me shifting in my EVO.

[scheherazade]

Originally Posted by okix

I cant remember my exact shift times but I can get that. Here is a video of me shifting in my EVO.

The evo's transmission is easier to shift fast, imho.

The 335 is so 'sticky' going in, that tight clutch timing is harder.
The lever may fall in, or it may snag and you need to shove it harder.
If you get caught lifting too quickly on a snagged shifter, then you miss the shift.

The evo is at least consistent and predictable.

-scheherazade

[okix]

Originally Posted by scheherazade

The evo's transmission is easier to shift fast, imho.

The 335 is so 'sticky' going in, that tight clutch timing is harder.
The lever may fall in, or it may snag and you need to shove it harder.
If you get caught lifting too quickly on a snagged shifter, then you miss the shift.

The evo is at least consistent and predictable.

-scheherazade

I will have to agree with you on that one and I havent even driven the standard transmission 335. My evo transmission doesnt get any smoother. Its a dogbox.

[i2iSTUDIOS]

I've seen people shift crazy fast, as fast as you can dip the clutch and let it got right away and it's onto the next gear. I wish I could shift that fast. Would an SSK help with that?

[Malaka1]

Originally Posted by i2iSTUDIOS

I've seen people shift crazy fast, as fast as you can dip the clutch and let it got right away and it's onto the next gear. I wish I could shift that fast. Would an SSK help with that?

Yes, a SSK will help you shift faster.

[scheherazade]

Originally Posted by okix

I will have to agree with you on that one and I havent even driven the standered transmission 335. My evo transmission doesnt get any smoother. Its a dogbox.

JEALOUS!!!!!!!!!

Man,
pop pop pop no-clutch insta-shifts : SICK

I didn't know they came in an H pattern though. I've only seen the sequential type.
That actually makes it very DD-able.

P.S. What 1/4 are you getting? mid 9s?

And again... JEALOUS!!!!!!!

-scheherazade

[MTV]

Originally Posted by okix

I cant remember my exact shift times but I can get that. Here is a video of me shifting in my EVO.

You, my friend, know how to shift

[Mr. 5]

I'd still like to see some actual logs with some ATs.
It would be nice to see what our times would be if we had an auto in our cars.
Now before I start get some hating, I know that the MT is geared differently than the ATs but I would still like to know what the times would be like if we shifted as fast as an AT.