Anyone ever add a third axle (working axle) to make a 6x6.
This is an idea Id like to do to my 91 eventually. Ive seen it done to a couple other trucks over the years, but not a Dodge diesle. I think it would be a bad edit truck with plenty of power.

 

It's not a first gen but like this

 

I think this one uses an NP205 transfer case with two outputs:
http://www.4btswaps.com/forum/showthread.php?t=740

So it can be done with our truck's NP205's:

http://www.pirate4x4.com/forum/showt...ht=dual+output

 

I think the T-Rex used two drive shafts like in trebors post.

There is a guy in Georgia I think. Had a truck in 4Wheeler mag some years ago, he built a correct 6x6 setup where the forward diff feed the back one.

 

i would think to use a set of rockwell they would be pretty easy to hookup

 

'cept then an empty truck would exceed its GVWR.

 

I have never seen a lighter axle with an input and output. Wasn't the old 2 1/2 tons dual driveshafts? Its been a while since I have seen 1.

 

The 2-1/2s have the chunk mounted on top with a pinion flange on front and back. Easy to link them together. Huge and heavy axle. You'll probably need lift to convert to those. 6.73:1 ratio BTW.

http://differentialeng.com/TwoHalfTo...ryRockwell.htm

 

Here's a 6x6 first gen. I just found a pic but there's no background on it as far as the build.

[IMG][/IMG]

 

ramrod, I've seen that one before. IIRC it's a first gen body put onto a differant frame.

 

The 2 1/2 tons are gonna be the best way to go. Wont ever hurt them and add some pinion brakes for extra stopping power. And do it with 3 steering axles if you wanna really have some fun.

 

If you mean "add" as in leave the stock brakes on, then I think it's overkill. IIRC, the pinion brakes alone aren't legal on road. Must be on each wheel.

 

I agree 2 1/2 ton rockwells would be the best way to go. They're heavy though. I believe a Rockwell weighs 750 lbs. You would be limited in tire size due to Rockwells only having a 6:72:1 ratio. In some states the pinion brakes are illegal...atleast in TN they are.

 

The first link is for the T-rex, the second is for the Tow-rex. The Tow-rex has dual wheels. Scroll down the page a little and you can see a picture of how the arranged the drive for the second drive axle using a transfer case and an off set pinion on the second axle.

http://dodgeram.org/ki4cy/ram_picts/Trex.htm

http://www.cardomain.com/ride/2647357

 

I understand they are not legal to be used alone but it would be legal to have with the rockwells and be productive unless you wanted to shell out the extra $$$$$$$ per wheel to convert the drums over to disc. I would at least run one up front with the drums.