Where is everyone #5

I think Eaton still makes 3 speed rears. Knew a steel hauler that ran a 6x4 with 3 speed rears. He hauled heavy and yes they shift on the go. Later had a 8v92 detroit, allison auto and 3 speed rears. Cars had trouble catching it from a light, no joke.

 

That’s it.

 

He managed to escape the wrath of CRST this time.

 

@Lysdexis

I don’t haul hopper and surprisingly never have. But I have been in many a field hauling hook tenders, dump trailers, and tanker to framers. Get something with deep reduction, whether it be 15 or 18, a decent all around gear like 3.73-4.11 for where you will be running. 450-500 hp, 46k rears for the terrain and you will be fine. This is just one super truckers opinion.

 

Not sure, I think they’re a two speed rear and to get the 3rd speed it puts on carrier in low and one in high and the power divider compensates.

 

I would think an 8LL would be all you need for a hopper doing local work

 

Yes. International twin screw at EZ. Had a L10 Cummins at 300hp, I pulled a Vermeer 33x44 Directional drill rig on a 20 ton tag a long with it. Hauled both 750 gal mixing tanks on the truck... 20 foot flat. Pretty sure Zi have a pic of it somewhere. 68 mph all day on flat ground. I came out of Birmingham with a Cat 304 excavator on the truck, and a Cat 416 4x4 Hoe on the trailer grossing over 67,000 number of years ago. Jelico mountain gave it a workout lol. That performance 9 was a decent transmission, not for heavy haul but a decent transmission basic work. I brought that truck in from Syracuse NY and never did stop for fuel, it did good for a class 7 truck.

 

Two speed rears don't work that way, or I suppose a person could, but shifting in and out all the time is not what they were designed for.
My truck has two speed rears, with the faster ratio being 4.10s and the slower being 5.62s. With 4.10s I rarely have a need for the other ratio, but when starting out with a real heavy load in the mud I really like them. Also, if you are hauling heavy on steeper Forest Service roads for example where your top speed is not going to be very fast anyway, you can leave them in the slower ratio, This will make your splits on the transmission closer, and it will be generally just easier on the truck.

When you shift out of the low range it is similar to shifting out of deep reduction on a 15 as far as the rpm adjustment goes. For example, you could run up to say 5th gear on a 10 speed, hit the dash switch, lower your rpms a bit, and then put it in 4th. I have never shifted mine from the faster gears to the slower gears while moving (never really had the need), but I have a friend that has. They shift just as smooth as can be, but NEVER have your power divider locked in when shifting. Each rear end needs to be able to act a little independently of the other to avoid serious damage.

When I had a 18 with a .86 od top speed in the slower ratio was around 45 mph just to give you an idea. They are heavy though and expensive to repair I'm guessing as I haven't had to do that yet.

Again, if you guys are going to haul bulk commodities I think you will regret having that heavy of a tractor.

 

Nice.