The automatic trucks like to downshift atleast 2 gears as soon as u let up on the throotle an the jake kicks in an has put me sideways...... It was just a triaxle dump truck.....C-15 6spd auto......really fast.......
I'll stick with my 18spd manual if I have a choice
Manual Vs. Autoshift Transmission
Discussion in 'Experienced Truckers' Advice' started by drivenmecrazy, Nov 27, 2008.
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Since I'm 49 years old now with a bad back and knees that creak when I bend them, I wouldn't trade my automatic for anything. But, you're right about winter driving, you definitely have more control with the manual. You gotta take the bad with the good though and when I'm crawling in LA, Chicago, New York or any other you name it city traffic my knee and my back thank me for not having to push that clutch.
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I hate the hard shifts you get with an auto out of a stop.
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The auto 10 w/clutch is nothing but a regular 10 spd with electronic solenoids controlled by the computer that will shift the gear selector and adjust the engine rpm for shifts. If you want to convert from auto to manual you just have to remove the solenoids,cut the shifter hole in the floor and install it then reprogram the ECU for a manual shift.When they work right,they are great.When they don't,it's a nightmare. Used to run in an 05 International 435 Cummins Eaton Autoshift and it was the best thing since sliced bread.Plenty of power,shift points were great and I knew little ways to make things run better.Like during acceleration pop your foot off the throttle around 1600-1800rpm it will upshift then while slowing down if you tap the throttle around 1100-1200rpm it will downshift.Made it easier to nor rap out the motor and get better fuel economy without having to reach down and mash the buttons all the time. Had the tranny start goin to crap around 435K miles. Got it replaced and worked like a charm.
Big Duker Thanks this. -
DOES ANYONE HAVE ANY IDEA HOW MUCH MPG AN ULTRA SHIFT GETS(3:73 REARS)? VS. 10 SPEED TRANNY? WEIGHT 40,000 LBS., HILLY TERRAIN.
truckinwva -
I hate to say I hate the auto shifter. With a passion.
I can name a million reasons but here are the top three. Backing up a hill, this thing forces you to hit the gas hard which shakes the #### out of the truck because it won't get into gear when backing up a hill.
Getting argued with when I want to up or downshift.
Extremely pissy little thing too, refuses to do what its told, breaks if you look at it funny. -
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Watching the sales video, the Ultra/Autoshift looks harder to drive than the regular old stick transmission. If you are going to spend time teaching yourself all of Auto/Ultrashift's idiosyncrasies, then why not just learn how to shift a manual and be done with it.
And why doesn't Allison make an OTR torque converter transmission? They make them for 45 foot long tour busses. Is it because of the jake brake issue??? -
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Jim Bob Thanks this.
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