I HATE AUTOMATICS!!

[3p141592654]

Except those that don't. :biglaugh:

Two examples:
BMW M3/M5 with electrohydraulic SMG transmission
Toyota Prius with ECVT transmission.

ANY automatic transmission, MUST have a torque convertor (fluid coupling).

 

[Doward]

but is a CVT still classified as an automatic transmission? I was under the impression they were a different class altogether...

That electrohydraulic SMG, I need to look into

 

[iwannadie]

automatics will always have a place. daily drivers dont need manual. most people i know with manuals think the car is just faster Because its manual.... even though they dont know How to shift. ive beaten plenty of them with my lowley auto.

a poor driver with a manual is WAY slower than any automatic in any situation. drag racing i cant see anyone beating an auto no matter how good you shift.... now for some spirited daily driving and if you know what your doing, manual is great. thats why ill be doing the swap.

 

[TurboStreetCar]

Manual transmission = more efficient at putting power to the pavement.
Automatic transmission = easier to control the power being put to the pavement.

manual are more efficient, but autos have the advantages that overcome the slight inefficiencies. for example the extra 10-20 horse a manual will put out due to less drivetrain loss, is needed to keep up with the full boost launch and constant boost shifts of an auto.

I beleive CVT's are still classafied as autos becasue they still are not a manual shift transmission, but they coudl be tere own class. i like them, its like driving a really big snomobile.

 

[Turbo. Targa. Life.]

*sigh* I don't even know how to reply to all this shit. END IT NOW. FOR THE SAKE OF HUMANITY END IT NOW! lol

Seriously I don't understand how this brewed up into 4 pages (I have mine set to 30 posts/page) of bullshit/nonsense arguments.

 

[tookwik4u89]

Woooooooo Hooooooooo cant we all just get along....lmao, alot of not so well thought out posting, it got boring after first couple pages, Jspec gave a lot of good info, I built my "suckie" a340e 2.5 years ago, fluid is still clean, it does shift into r &d from park a little rough , i have raybestos blue plates and IPT valve body/ high stall converter. I dropped .6 secs changing only from r154 to my "suckie"a340e. As smarter people have posted on here before, high stall + contact patch= FTW! My experience of course is 1/4 mile, where my RPS $1000 worth of clutch parts lasted about 12 passes. I did love driving the 5 speed also, but I have no desire to listen to the bov dumping my boost 3 times while im racing.
Doward, I hope Toyota gave you the orange FIPG and not the black stuff!

 

[3p141592654]

An automatic transmission is an automobile gearbox that can change gear ratios automatically as the car or truck moves, thus freeing the driver from having to shift gears manually. So I think a CVT qualifies, and an SMG.

A hydraulic automatic transmission would probably be defined more like what you have in mind. The very first A/T was a 4-speed hydraulic coupled transmission from Oldsmobile (1940). The torque converter took almost another decade to appear.

but is a CVT still classified as an automatic transmission? I was under the impression they were a different class altogether...

That electrohydraulic SMG, I need to look into

 

[Nick M]

A constant velocity transmission is neither automatic or manual. The reason it is neither is that it does not shift into another set. It is not designed anything like a planetary gearset (auto).

 

[Turbo. Targa. Life.]

Uhh care to elaborate Mr. I Think Im a Genius?

 

[Nick M]

Uhh care to elaborate Mr. I Think Im a Genius?

No problem hoosier.

Rather than spoon feed you, why don't you google planetary gearset, and constant velocity transmission, and see how they work for yourself.

 

[Turbo. Targa. Life.]

Well that wasn't very nice...jerk face!:icon_razz

I aint got the time to sit around and google shit. I gotta go out and wash the G/F's car (she sucks at it). I'll google it later tonight

 

[TurboStreetCar]

its liek a snowmobile, in a snomobile and go carts that are equiped they use a variable diameter pully. it uses a v shaped belt that rides inbetween 2 pully halves. as the rpms go up the pully halves get pulled closer together pulling the belt further from the center or effectivly making the pully diameter larger creating the change in gear ratio but no actuall gear change.

not exactaly sure if thats how its used in cars (with belts and pully halves) but thats the general idea.



EDIT: pic to further explain, the high gear low gear would be if the variable pully were on the engine or drive side, if it were on the axel, or driven side it would be oposite.

 

[3p141592654]

Actually, the ECVT in the Prius uses a planetary gear set. There is no belt or conical pulleys like a traditional CVT.

 

[TurboStreetCar]

i did say that i wasnt exactaly sure how it was implemented but it is the basic idea. i just looked up the prius and its actually very interesting. i havnt seen pics of its exact setup but it seems as though it uses the planatary set and instead of holding one portion of it like in a conventional automatic, it varies the speed of one portion. to vary the speed of the others creating the variable gear ratios. pretty neat stuff.