Quote:
Originally Posted by Rookie at 53
I drove trucks 20 years ago and they were just coming out with automatics I never got to drive one. I'm now 53 and thinking of driving again. I got my CDL and passed my dot phys. I would like some help on deciding on an auto or standard. Also is there a difference between an automatic and auto shift. I have been looking at Volvo 2002 -2004 Cummings 450 hp. for OTR what does everybody think. I am in Texas and am going to hall in Texas and west. Would appreciate any advise I can get.
Thanks,
Rookie at 53
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Eaton has offered a number of AUTOMATED transmissions. these are manual transmissions that are shifted by a computer, similar to what exotic sports car manufacturers have been using for many years.
the eaton autoshift has a clutch pedal, but no stick. a keypad controls shift selection.
the eaton ultrashift has no clutch pedal or stick. again, a keypad (or variation of) controls shift selection. the clutch is centrifugal, meaning that it engages as the flywheel rpm increases, similar to a snowmobile/4-wheeler clutch in theory. hmmmmm, just had this thought.... a "runaway" engine could be an interesting scenario... not that it happens often today.
rockwell/A-M has variations of each type as well, their midrange centrifugal clutch is a "wet" clutch.
...manuals are AS failure prone, and they reak havoc on your knees and back IMHO...
... i'm not opposed to either.
AUTOMATIC transmissions are hydraulically engaged planetary gear sets. most current makes are electronically controlled as well.
automatics are coupled to the engine through a torque converter. they live mostly in light- and medium-duty truck... for now.