[Willy]

Lets hope FCA irons out all the kinks in the new ZF sourced 9 speed before the BU hits showrooms. TTAC explores the 9 speed in hopes of better understanding the Cherokee. Its a good place to begin figuring out your expectations...

http://www.thetruthaboutcars.com/20...n-puts-dog-clutches-on-the-leash/#more-727738

 

[tony]

Hopefully it ends up in the renegade and isn't as problematic as other new transmissions have been

 

[4x4]

I think eventually this 9 speed will be the golden standard for Chrysler.

 

[tony]

likely it will.
they need it, they need anything that can help improve performance and fuel economy in their cars.

 

[Willy]

its going to be in the BU Jeep if reports are to be believed. ITs used in KL Cherokee and the new 200. BU is going to share its entire drive line with both...

 

[4x4]

i think my 2016 we will have 10 speed automatics that shift never ending. its funny because the industry is moving towards the trend of having ALOT of gears. or just having one continuous one (cvt)

 

[tony]

or have as many gears as a mountain bike

26 speed transmission by 2030?

 

[4x4]

haha yes. 26 gears of instant shifting

soon 2.0L 4 cylinders will be able to do 0-60 in 2 seconds. through gears 1-10

10th gear top speed being 60mph.

 

[tony]

At least with 26 gears we can have the best fuel economy possible. Just imagine that.
You might never need to pass 3000 RPM to get up to speed on the street or highway

 

[4x4]

i wouldnt say that. it would still have to rev to get to speed. especially with the speed range split up into so many cars lol.

 

[tony]

you might have to rev higher, but not significantly higher than 3k

 

[Rivmage]

i think my 2016 we will have 10 speed automatics that shift never ending. its funny because the industry is moving towards the trend of having ALOT of gears. or just having one continuous one (cvt)

I was reading an article that talked about gearing in autos. The research into adding more gears above 8 or 9 showed no sufficient gains in fuel savings. It is that point when the laws of diminishing returns start to impact gearing.

I'll have to try to find that article again.

Scott

 

[4x4]

what about from 5 or 6 speed to 8 or 9? does that have any improvements in fuel efficiency?

it would be nice to have a tall gear at the end so traveling on the freeway keeps the revs low. sometimes i find cars are at a very high rpm when going over 60mph

 

[Willy]

what about from 5 or 6 speed to 8 or 9? does that have any improvements in fuel efficiency?

it would be nice to have a tall gear at the end so traveling on the freeway keeps the revs low. sometimes i find cars are at a very high rpm when going over 60mph

8 and 9 are OD's

 

[tony]

Would anyone get this over a manual transmission? Or would you not care about the lack of fun from not having a manual?

 

[Rivmage]

Would anyone get this over a manual transmission? Or would you not care about the lack of fun from not having a manual?

The problem is the Trailhawk and Limited don't get manual options. I drove a stick for years and they are fun on open roads, not so many with stop and go traffic. As I have gotten older, I prefer an auto on a daily driver.

Scott

 

[terasec]

Would anyone get this over a manual transmission? Or would you not care about the lack of fun from not having a manual?

certain cars i prefer manual over auto, sports cars, small engine cars, and 4x4's
renegade being small engine 4x4, would prefer manual over auto anytime,
current car only came in auto for upper end 4x4(FDII), guessing renegade will be similar, wont have a choice with top end 4x4 package like trailhawk

 

[Rivmage]

Here is the article:

http://www.gizmag.com/ford-gm-9-10-speed-transmissions/27103/