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Thanks Price! I'll take a longer look at this later on when I get home. Also, a source for a torque curve, at least for the 2.0t motor, was found over on the General BB. Price, have you seen a curve for the 2.0T motor?
A couple first glance reactions to the new ratios:
#1) It's now going to take 2 gear changes to get to 60mph. This will hurt in the all-so important (to most) 0-60 test. Also could be irritating when accelerating hard on freeway onramps, though 3rd is better.
#2) Overall, the ratios are higher. 1-5 higher than previous 1-5, with a 6th tacked on. This should mean better cruising fuel economy for sure (in top gear), and better capability for acceleration (given identical motors/weights). Could also mean improved top speed if the motor's got enough balls to get it to redline in 6th.
I'll take a closer look at it, hopefully tonight (gotta fix my 900!). Thanks again!
By the way, Avi. Gear ratios dictate how torque is getting from your motor to the wheels. Higher gear ratio means more available torque at the wheels for a given torque at the crankshaft. Gear ratios also dictate at what road speeds your car is at what part of the torque curve (i.e. what speeds are "sweet spots" for engine output). The spacing of the ratios dictates when shifts need to occur, and how well a transmission takes advantage of available engine output. More gears generally is an advantage as it can give you tighter spacing across a given gear ratio range, allowing you to keep the engine closer to it's "happy" rev range. However, Saab has not tightened up the ratios here. Instead it looks like they're shooting for higher ratios down low, probably to get more out of that peakier torque curve.
Cheers,
'Roo
posted by 12.13.238...
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