19 Oct 09, 08:15 pm
So I have grandiose dreams and ambitions. Sue me. :p
Anyway, I've decided that after I build my TJ to an acceptable level for local wheeling, I plan on tackling a 6x6 project. Not an M35Ax, but more along the lines of a LWB 1-ton van or pickup. I'm leaning towards the van for the interior amenities possible. but I digress.
The biggest hurdle of any 6x6 project is how to get power to the rearmost axle. I've seen a few ways of dealing with this issue. The most common I've found being a 1:1 transfer case unit hard-mounted to the intermediate axle, clocked in such a way to allow for a driveshaft to be passed over the intermediate axle down to the rear axle. it could be a standard transfercase turned around and using the rear output as the input, with the two front shafts driving the two axles.
If that's confusing, here's a thread:
http://www.patrol4x4.com/forum/showthread.php?t=112
front of intermediate axle:
![[Image: 6x6drive2.jpg]](http://img.photobucket.com/albums/v443/gqswb/6x6drive2.jpg)
Notice how the center output of a standard pass-drop t-case is the input here.
Side of center axle:
![[Image: 6x6drive5.jpg]](http://img.photobucket.com/albums/v443/gqswb/6x6drive5.jpg)
And the factory input becomes the output to the rearmost axle. this or the t-case is a dual-offset case (think landcruiser or Land rover) using the input to drive the center axle.
Another solution I've found is an NP205/200 combination, using the offset outputs of the NP200 in the NP205 case retaining its factory center output, giving you a t-case with dual rear outputs. One output would be into a two-piece CV driveshaft back to an offset rear axle. This allows for 2Hi, 2Lo, 4hi, and 4Lo, but no FWD. The previous arrangement would allow for an upgraded transfercase for strength. but this one would be easier to adapt with junkyard parts. I'm wondering if there are adapters out there which allow a t-case to be hard-mounted to an axle or if it would need to be custom made. I was thinking just having it done yoke-yoke with a steel frame bolted to the axle tubes and diff cover, but that would be one heavy pig. It would have to have started out as a divorced t-case with a yoke on each shaft.
Any input? Something like this would need quite a bit of planning and research so starting this planning now, with my level of skill, might be the best idea.
Anyway, I've decided that after I build my TJ to an acceptable level for local wheeling, I plan on tackling a 6x6 project. Not an M35Ax, but more along the lines of a LWB 1-ton van or pickup. I'm leaning towards the van for the interior amenities possible. but I digress.
The biggest hurdle of any 6x6 project is how to get power to the rearmost axle. I've seen a few ways of dealing with this issue. The most common I've found being a 1:1 transfer case unit hard-mounted to the intermediate axle, clocked in such a way to allow for a driveshaft to be passed over the intermediate axle down to the rear axle. it could be a standard transfercase turned around and using the rear output as the input, with the two front shafts driving the two axles.
If that's confusing, here's a thread:
http://www.patrol4x4.com/forum/showthread.php?t=112
front of intermediate axle:
Notice how the center output of a standard pass-drop t-case is the input here.
Side of center axle:
And the factory input becomes the output to the rearmost axle. this or the t-case is a dual-offset case (think landcruiser or Land rover) using the input to drive the center axle.
Another solution I've found is an NP205/200 combination, using the offset outputs of the NP200 in the NP205 case retaining its factory center output, giving you a t-case with dual rear outputs. One output would be into a two-piece CV driveshaft back to an offset rear axle. This allows for 2Hi, 2Lo, 4hi, and 4Lo, but no FWD. The previous arrangement would allow for an upgraded transfercase for strength. but this one would be easier to adapt with junkyard parts. I'm wondering if there are adapters out there which allow a t-case to be hard-mounted to an axle or if it would need to be custom made. I was thinking just having it done yoke-yoke with a steel frame bolted to the axle tubes and diff cover, but that would be one heavy pig. It would have to have started out as a divorced t-case with a yoke on each shaft.
Any input? Something like this would need quite a bit of planning and research so starting this planning now, with my level of skill, might be the best idea.
![[-]](http://www.arcticoffroad.com/images/collapse.png)