I gotta hit the hay. I already put in a full day-and-a-half, today. If there is further interest, I can contribute tomorrow or possibly the weekend.
Hi Layoutshooter -
Yep, that helps, some. Do you have any pics of the rig that you can reply with?
3.58:1 is relatively low gear differential gearing.
What RPM's are you turning at your normal cruise of 65 MPH???
I personally don't like 10 speeds. The engine is out of its "sweet spot" a lot. I can elaborate if folks are interested.
Why two axle drive? Slippery conditions? If so, why not just computer controlled tag axle?
Why a top mount TCU? Please explain and add pics if possible.
Also, how many miles do Expediters average per week? Per year?
I will send some pictures this weekend.
The top mount for the TCU is better for the TCU. Less salt, road dirt, etc. They run cooler and last longer when top mounted.
My normal cruise range is between 57-62MPH. Tach reads 1300 at 62.
The axles set up would be more for load distribution than anything.
I am running, 22.5 tires, on everything but the lift axle.
An average mile per week is hard to do. We run about 100K per year.
Thanks for the update.
Do you have any idea what the RPM is at 57?
What motor, and do you know the Peak Torque RPM?
What is the bandwidth of that ten speed automated shifter? In other words, if the engine lugs down due to climbing a grade, what RPM does it downshift at, and how high do the RPM's climb when it downshifts?
EatonFuller 10SP autoshift. The one WITH the clutch pedal.
It is an MBE4000 450HP. I am not sure of the peak torque RPM
RPM at 57 is around 1200
When it downshifts on hills it is around 1500
Attaching two pictures of truck, will take on of the entire rig when the rain stops
Yes. A Trailer Tail can be legally added to a 40' straight truck.