Any Volvo O-O's (780 class) running an I-Shift?
Discussion in 'Volvo Forum' started by STexan, Mar 24, 2014.
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daf105paccar Thanks this.
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you sure are right about that one. -
Sure, I just bought a Volvo VNL 780 2015 with I-Shift would never go back to my 13sp Eaton. Mine has a Manual mode option if I want to shift myself, but I never use it. The "economy" and "performance+" modes do everything I need. There's no clutch pedal and the truck has a "clutch protection system" to reduce clutch strain and wear. Forget the "old school" lunacy. I drove a clutch and 13sp on my 2006 Volvo, and it was a good transmission and all, and I loved that too. But, for day-to-day grind in heavy traffic, on hills, and dangerous weather conditions, the I-Shift can shift better than the best human. For example, I used to keep the RPMs up above 13000 with a heavy load on a hill for fear that if I let RPMs drift down to 10000, I might mis-shift and end up lugging the engine into a dangerous deceleration spiral. The I-Shift is so good, it will let the RPMs drop all the way down--preserving fuel economy--then at the exact spot, shifts perfectly when it needs to. It's also works very well with the jake brake system to control descents. I-Shift is backed up by all sorts of controls that prevent dangerous situations from occurring. Among these: 1) hill assist--sensors automatically detect a hill situation during starting, using a combination of the brakes and clutch to avoid a roll back. Clutch is saved, and driver safely pulls away and up the hill. 2) traction control--computers use the ABS function of each wheel to compare revolutions to evaluate whether or not the truck is beginning to jackknife, then controls the situation automatically. 3) anti-roll--sensors on the frame consider whether the truck is at risk of roll-over on a turn, and actively prevents this by slowing the truck axle speeds. Early versions of this system has problems, but after a decade of development, I think Volvo has the best auto shift system. Now, when guys tell me they prefer a manual transmission, I ask "why?".
CoyoteExpress, Anonymousproxy, KB3MMX and 5 others Thank this. -
I find that driving with good working systems like the I-shift makes me a more relaxed and safe driver.
CoyoteExpress, KB3MMX, Elroythekid and 1 other person Thank this. -
Very well said. 780 ishift. Set the cruise and ride . Even going up hill and down . People that criticize it hasn't drove it yet and stuck in the years of the Cat 4 mpg days. When I first drove the new d13 ishift.......OMG!!! Took about 2 red lights in traffic and I was in love. And with the full large one piece windshield and one piece large door windows it's like riding in a glass bubble (can see everything) on a cloud. 1750 torque in a 455 HP. Pretty nice. But I ordered the 500 HP and tuned to way I drive.
Foxcover Thanks this. -
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GITRDUN45 Thanks this.
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Few things: May be you didn't like it because you used to rev-it at 10000 to 13000 rpm. Also, let me know your experience with it after 500000-700000 miles. There is a reason why arrow sales and others are full of them. But, I hope it likes you as much as you like it. -
KB3MMX Thanks this.
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