At what point is a double frame truck needed??

I'd rather see a single 1/2" rail than a 1/4" rail with a 1/4" insert. Moisture tends to get in between the rails and rots them. When I bought my W900 it had a 1/4" insert along where the suspension was bolted up. The rust jacking between the lower flanges was insane. There was probably a 1-1/2" gap there in some spots. It was bad enough that it actually broke suspension mounting bolts and a couple of the suspension hangers. I even suspect that a 10" crack along the bend where the web meets the flange was a result of excessive rust jacking between the rails.

 

Trucks aren't like cars. Whatever you want, they'll build it. Most dealer stock trucks around here are built with single 3/8" frames, 18k steer axles and 46k rears because thats the spec a majority of companies want for the bush.

 

Around here stock trucks tend to be 3/8" (10"?) frame with 12,000# fronts and 38,000# rears.

 

I have 3/8 frame 14 front 46 rears and 18 pusher on mine. My weak point is the cross member at the transmission
That seems to be my flex point 265 wheel base

 

Yea and I do off roading with it. Been buried in mud and soft ground many times

 

38 rears. Aren't those for hauling bananas

 

That's why I said "stock truck"

 

46 rockwell with 4 locks is what I look for nowadays. My old binder has a 48 rockwell with high and low but its a 1989. Gotta love those two speed rears. 45 mph in low and hold the fawk on 90 mph in high.

 

Potatoes. Spec it light and load it double.