autoshift

teamjdw · Mar 8, 2009

can some explain how autoshift works?I have only driven 10 speed with splitter,and straight 6 .Is autoshift the same as an automatic?

Refer Hauler · Mar 8, 2009

An auto shift is an automated manual transmission that shifts with air or hydraulic actuators.It is not a fully automatic unit such as an Allison or Aisin. Shift points are programmed into the ECM and transmission controler along with inputs from turbo boost and fuel flow. The Freightliner system use's a clutch pedal for starting and stopping, The Eaton model using centrifugal force and does not have a clutch pedal.I have one and would think very hard about going back to a manually shifted transmission.

layoutshooter · Mar 8, 2009

Close on that one. The EatonFuller autoshift is the 3 pedal system. The EatonFuller Ultra-Shift is the 2 pedal system. We have an autoshift. I have always said I would put an Ultra-shift in a new truck but I would like to drive one first. I have heard stories that it is a bit harder to back up slowly with one. One of these days I will have to try one. Layoutshooter

greg334 · Mar 8, 2009

When I drove the ultra-shift, I did not like the way it handled hills or backing up. I could not smoothly back into a dock like I can with a clutch. The hill issue is the same thing, I just didn't feel comfortable with it. The dealer who let me have the truck for a bit demonstrated it for me first and he had the same issues even after driving one for 8k.

highway star · Mar 8, 2009

Mine is clutchless and I have no problem backing smoothly. I just give it a bit of fuel pedal and feather the brake. There's no surge, as smooth as if it was an automatic.

Dakota · Mar 8, 2009

Backing takes a while to get used to. You have to two pedal it one foot on the gas and one foot on the brake. You have to keep giving it gas while braking to your desired backing speed. If you don't do this it basically goes into neutral every time you let up on the gas. No gliding is allowed.

Dakota · Mar 8, 2009

Backing takes a while to get used to. You have to two pedal it one foot on the gas and one foot on the brake. You have to keep giving it gas while braking to your desired backing speed. If you don't do this it basically goes into neutral every time you let up on the gas. No gliding is allowed.

Does anyone else hear the shifts in the radio?

teamjdw · Mar 8, 2009

thanks for the info.my wife and i are considering signing on with expediter services.they have class8 t 600 kenworth with cat 11 engines.a fuller ultrashift trans.any one used this truck or company?

greg334 · Mar 8, 2009

Yea, maybe it does take some getting used to but the advantages I can see in both are fuel mileage and clutch longevity.

Just to add this, I met someone who had a Class 8 with an Allison in it, he said that he got 10 out of the truck.

layoutshooter · Mar 8, 2009

We are averaging 10mpg out of our truck. It has the 450hp Mercedes and the 10 speed autoshift. Layoutshooter

mjolnir131 · Mar 8, 2009

Most of the jerking and jarring while backing up is easily managed by taking all the slack out out the system with the brake.

Depress the brake, rev up a little then slowly let off on the brake.thats for flat or uphill dock ramps for downhill most auto sifts with 2 pedals do not hold themselves so you can just use gravity and the brake to back downhill.

Yes it does take getting use to, especially if you have been using that clutch as a secondary accelerator.