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Old 03-30-2014, 09:57 PM   #30 (permalink)
Frank Lee
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Join Date: Jan 2008
Location: up north
Posts: 12,762

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

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Quote:
Originally Posted by serialk11r View Post
Also transmission efficiency...mechanical CVTs have pretty big losses. I love how CVT cars drive though, no surprise shifts, put your foot down and it goes to the optimum rpm instantly.

I don't understand why some people here don't like more gears. I think 7 is the perfect number, more than that is a little strange. On a Yaris/Fit you have extremely wide spacing for 5 gears, but the cruising rpm is unacceptable and taking off in 1st would be horrendously difficult on a hill if you were to decrease the final drive ratio 20%. With 6 gears and a small engine you can get a good cruising rpm, but engines over 2.4L you would want another gear as can be seen with 6 speed Accords and such.
I think three or four gears in a manual box, with top "gear" being direct drive feeding to a final drive tall enough to negate the need for any overdrive ratios is perfect- as I've said before, fewer gear meshes = less transmission losses. But then I'm a flatlander who's not particularly concerned about extracting maximum acceleration from my vehicle.
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