Single axle dump trucks

I'm not sure about that.

I had a 70's F800. I'm not aware that any of them had a locking rear. Not that familiar with newer trucks but I'm not sure they have that either.

Those F800 trucks like mine were very good off the road. Like I said I don't think they had any kind of available actual lock but that truck was like a tank off the road. That spring suspension really gives you great traction.

You can't even begin the difference in traction compared to something like an air ride tractor. Completely 1000% different situation. The air ride is not good off-road at all. That's why they make them with full lockers.

 

Spring ride seems to be a little better than air on tandem axle trucks but neither compares to walking beam style suspensions
It’s all about freedom of the axles to follow the group on each wheel and maintain similar force against the ground with each wheel. Lockers make keeping even pressure against the ground less important.
It’s not uncommon to see trucks like your looking for with a locker if they have air brakes.
If you buy one without a locker it is going to be very variable on cost and availability to convert to one.
If you have a popular axle and can do the work you can probably have it done for under 1000

 

First thing is air ride is the most beautiful wonderful thing when you are on pavement.

When you get off the pavement terrible horrible poor traction. The air ride dump trucks for that reason have full lockers.

Walking beam suspension is best because it actually pushes the axles down and forces them to grab traction. Air ride is the opposite.

Spring Ride on a truck like the F800 I have is very very difficult to get stuck.

I have an old truck that I have to pull out that's down in the yard at the bottom of the hill on grass. I would never even attempt that with my tractor. My F800 will go right down there and pull that out with no problem whatsoever.

That's the difference.

 

Actually, the 8 bag kw pre loads the suspension off road instead of unloading it, about the only plus side to that pos.

Most of the newer ones I’ve been in have had lockers

 

I don't like air on a dump truck. You forget to lower the bags before dumping and blow one while the box is up, you increase the risk of tipping over when stuff gets hung up in the front of the box.