813 with final drives? - Steel Soldiers::Military Vehicles Supersite

Smokinyoda · 01-28-2012, 23:14

Saw an interesting 813 for sale on a site I cant mention. Wanted to share some pics to see if anyone has seen anything like it. Here is part of the description:

Quote:

1974 XM813 5-ton 6x6, with 3821 miles and 1956hrs. This was purchased from a Military Research Facility that had implemented a super strong drive train. It has the 250 Cummins with a 5 speed transmission and 2 speed transfer case. The rear axles oscillate independently,

Looks like 1 diffrential feeds 2 sets of final drives??? Anyone know anything about this, or seen anything similar?

Derrickl112 · 01-28-2012, 23:16

I was going to posts pictures of this truck with the thread title saying "Lets play the WTF is it game"

jd-ford-hd · 01-28-2012, 23:45

The "powered walking beam" is very similar to road grader finals that are sometimes chain driven inside the case. These appear to be gear driven due to the visible bearing retainer plates along the case. This type of drive system allows a much further range of articulation without the binding of a propellor shaft between two conventional drive axles. I personally have never seen anything like this before on a 5 ton....!

jd-ford-hd · 01-29-2012, 00:07

This thing is interesting to say the least..! The cross shaft behind the differential appears to be the locking mechanism to lock the two axles together, for all wheel drive, engaged by the air chamber on the left side.

simp5782 · 01-29-2012, 00:35

Looks like something I could have fun doing some field testing out on and trying to break it!

quickfarms · 02-10-2012, 20:29

interesting

army_man15 · 02-10-2012, 20:35

Quote:

Originally Posted by simp5782

Looks like something I could have fun doing some field testing out on and trying to break it!

And trying to find parts for also!

papabear · 02-10-2012, 20:46

Quote:

Originally Posted by army_man15

And trying to find parts for also!

My best advice would be..."Run Forrest...Run!!"

73m819 · 02-10-2012, 20:47

there is another thread about this same truck and drives

the drive/rear looks like from a old cat 12

quickfarms · 02-10-2012, 20:55

Here is the other thread

Custom axle / susp, what is it?

There is yellow paint on the rear pumpkin and it appears to have s cam air brakes.

I bet the parts are commercially available and not custom made just for this truck.

It is interesting and there are probably many different prototypes out there including the 900 series 5 tons with airride suspension.

One thing I find interesting is the super singles that is is riding on.