Powered lift axle??

[SonoranWraith]

Dig unit for crawling maybe?

[tc1cat]

Wish I had pics! Just saw it going down the highway. Actually a strange truck. Straight truck with a full size sleeper, kind of short box on it, with the rear axle a lift axle with power?? Stranger part was it did not have any name on it as far as who owned it.
I am always on the lookout for different looking straight trucks!
Thanks for the ideas on making one. Just have to start thinking outside of the box on this one.

[ihbuilder]

sounds like you want to be able to disconnect it when in up position . some kind of clutch between the drive shaft and axle . this will be interesting

[Thorsteenster]

Originally Posted by SonoranWraith

Dig unit for crawling maybe?

That would probably be a little difficult to mount on the axle.
Here's a pretty straight forward driveshaft disconnect. Use male Stampede drive shafts on the rearmost pass through axle and on the lift axle, then a female to go over the two to slide back and forth, joining the two males end engaging/disengaging drive. I did this with Revo shafts a few years back, into one of the male ends I threaded a bolt with the head rounded off to keep the female slider in place while disengaged and I used an old steering knuckle around the slider attached to a servo to move it. You'll have to figure out how to keep the knuckle in place laterally on the slider while allowing it to spin.