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9 Speed Deep Dive

9K views 17 replies 5 participants last post by  Rivmage 
#1 ·
#12 ·
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
 
#13 ·
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
 
#16 ·
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
 
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