Early locking transmission vs. Automated manual.

[arghx7]

Most of those automated manual transmission attempt to emulate a torque converter equipped transmission in the way it feels coming off a stoplight. I think subjectively speaking a lot of people prefer the takeoff of a "regular" auto. Ford's dual clutch transmission they have recently introduced has been criticized for not being enough like a slushbox. Now I'm talking about opinions from the majority of the automotive press and "regular" car buyers.

[CXTKRS1]

Originally Posted by serialk11r

for the better I think? I heard that automatic using clutches only aren't very smooth from stop.

The Veloster and Fiesta are actually quite when taking off from a dig.

[SUB-FT86]

Originally Posted by CXTKRS1

So if you throw both the FRS auto and manual on a dyno the RWHP numbers will be pretty the same?

Originally Posted by Snaps

Who cares? This car isn't about dyno numbers...





But to answer your question, yes, pretty much.

:happy0180:


I love this!!!

[CXTKRS1]

Originally Posted by Snaps

Who cares? This car isn't about dyno numbers...

I rather not give up what little torque this car has to parasitic loss.

[Snaps]

^ Parasitic Loss of which there would be almost no discernable difference between a Manual and an Auto with a locked Torque Convertor

[mit_peid]

So is it safe to say that the AT should perform very similarly to the MT from gears 2 thru 6? I understand the gearing is slightly different between the AT and MT too, but if we were to assume the two had the exact same gearing, and you were both in 2nd going the same speed (say 15 mph), should the two cars both get to 100 mph at virtually the same time, assuming same redline shift-points, and assuming the MT driver is 40 lbs heavier than the AT driver to make up the difference in weight between the two cards. (?)

[wlfpck]

Originally Posted by ryude

Both automatics use a clutch, the only difference is one uses 2 clutches and one uses a clutch with a torque converter. Once the torque converter is locked, it's basically a manual transmission.

The one with 2 clutches is a Dual Clutch Transmission (DCT)

The DCT is found in the VW GTI (DSG), Mitsubishi EVO X and Ralliart, Porsche, etc.

[wlfpck]

Originally Posted by mit_peid

So is it safe to say that the AT should perform very similarly to the MT from gears 2 thru 6? I understand the gearing is slightly different between the AT and MT too, but if we were to assume the two had the exact same gearing, and you were both in 2nd going the same speed (say 15 mph), should the two cars both get to 100 mph at virtually the same time, assuming same redline shift-points, and assuming the MT driver is 40 lbs heavier than the AT driver to make up the difference in weight between the two cards. (?)

Assumming that the gearing is identical and the weight is equivalent, then for the most part yes. The performance would be the same as the torque converter locks up to provide a direct coupling (mechanical) as opposed to a fluid coupling.

[Sportsguy83]

Originally Posted by CXTKRS1

So if you throw both the FRS auto and manual on a dyno the RWHP numbers will be pretty the same?

Auto Dynos lower power than the MT because of parasatic losses.

[wlfpck]

Originally Posted by Sportsguy83

Auto Dynos lower power than the MT because of parasatic losses.

I thought someone dynoed the 86 and found that the performance was pretty much the same?

Or I am hallucinating. Maybe I'm thinking of something else.

[Sportsguy83]

Originally Posted by wlfpck

I thought someone dynoed the 86 and found that the performance was pretty much the same?

Or I am hallucinating. Maybe I'm thinking of something else.

There are several Dynos posted in this forum from AT members showing less power on stock cars when compared to stock MT cars. Heck, the ECUTek tunes gain less HO and less TQ on Auto's than on MT.

[wlfpck]

Originally Posted by Sportsguy83

There are several Dynos posted in this forum from AT members showing less power on stock cars when compared to stock MT cars. Heck, the ECUTek tunes gain less HO and less TQ on Auto's than on MT.

Hm... I wonder what car forum I was on yesterday after work. May have been something with a DCT... oh well.

[Sportsguy83]

Originally Posted by wlfpck

Hm... I wonder what car forum I was on yesterday after work. May have been something with a DCT... oh well.

Here is one example.

It's not a huge difference, but it is noticeable in the top end.

http://www.ft86club.com/forums/showp...25&postcount=1

[zooki]

Originally Posted by CXTKRS1

So if you throw both the FRS auto and manual on a dyno the RWHP numbers will be pretty the same?

The automatic will still have lower numbers because the auto transmission still
uses a hydraulic pump to operate, and it will cost some HP to drive, even with the converter locked up.