Automatic transmission
Discussion in 'Questions From New Drivers' started by Nickster909021, Aug 6, 2022.
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Geekonthestreet and Another Canadian driver Thank this.
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Once you drive an automatic you won't want to drive a manual transmission again. The Detroit Diesel DT-12 has Descent Control mode. You set the downhill speed you want to go. The transmission and engine both work together to hold truck at your set speed. You can usually go downhill faster with less braking because the transmission will drop a gear or two. It will bring engine RPMs up to 2200 and you can roll downhill without touching the brakes. I don't see many drivers talk about Descent Control on the DT-12 it's really nice feature. I think Detroit Diesel was claiming it can hold 80,000 lbs on 8% grade.
striker, Another Canadian driver, Wasted Thyme and 1 other person Thank this. -
Thanks for your responses
Another Canadian driver Thanks this. -
I have an automatic restriction and I get $.65-.70 per mile (depending on what trailer I'm pulling), stop pay, layover and weekends off at a small company. Pretty decent gig if you ask me, we have a couple of 13 speeds but two of them are sittin right now because almost everyone prefers the automatics. Auto restriction is not a big deal and not having to fondle sticks doesn't make you less of a driver, there's plenty of other things, imho that do that.
I started my CDL training in a manual and finished in an automatic. One of the trainers just made me so nervous I froze up when I grinded a gear and I couldn't get over that or avoid that trainer and I was running out of money so I decided it was better to get out sooner rather than later and tested in an auto. In hindsight the tester was super chill and I probably would have passed in manual but que sera sera.
Anyway, I think you should start in a manual if you have that option, it's not actually that hard and once you start getting those gears in smooth as butter it's actually kind of satisfying. If for some reason you feel like you need to switch to auto, it's not a big deal, but if you can avoid the restriction it might benefit you down the line.Blue jeans, Another Canadian driver and Nickster909021 Thank this. -
I bought an auto in 2020.
I’m kinda on the fence, though it’s first auto semi Ive dealt with, it’s been ok.
Had to drive a mack with mDrive, but it was when I was company driver and my 13 speed was in shop for Def issues.
I only drove for a couple days, not enough to get used to it.
The cascadia I bought in 2020, only reason i did was it was 3 years old, DD15, DT12Auto, 415k miles (138k year or so) and with Freightliner warranty bumper to bumper, was 43k.
Took a bit but by figuring out to turn off hill assist, you can back under a trailer or ease backwards without it taking off like a rocket by touching acceleration pedal.
Auto is great in Chicago traffic.
Swapping trucks a lot means finding yourself reaching for a gear stick that isn’t there.
In auto i have to have arm rest or I feel uncomfortable because I’ve always laid hand on gear stick.
But an auto restriction could hinder on some jobs, most companies now have a few autos these days, as it opens up more opportunities for getting drivers in a truck.Blue jeans and Another Canadian driver Thank this. -
Automatic transmissions seems to be more efficient I guess.perfect for being stuck in traffic.and easier for new drivers. Might be costly to repair. Rebuild
manual transmission.feel like your in control.and more fun just to switch gears. not good in traffic jams unless you let it coast . Easier to replace repair
Good luck with both be safeAnother Canadian driver and Nickster909021 Thank this. -
Blue jeans, Another Canadian driver, Hammer166 and 1 other person Thank this.
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Another Canadian driver Thanks this.
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you have at it though, with your automaticAnother Canadian driver Thanks this. -
Descent Control will not magically change the laws of physics and allow a truck equipped with it to go down a hill faster than a properly driven manual tranny truck (or for that matter an auto without it.) That's not to say it's not a nice feature, especially in this age of less than stellar drivers, but the reality is it only does the same thing an experienced driver does.Blue jeans, striker, MACK E-6 and 2 others Thank this.
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