This is a Mack MC3 truck with a crane. This is a project I started to test a new suspension design but it when I got through with the truck I added the crane part. The truck has solid axels with a rubber band spring design. The back has a worm gear drive to a differential on both axels. The crane is a modified 8421 mobile crane. It is all RC the boom has a linear actuator to raise and lower, the pivot is a worm gear drive and there is a motor to switch between the hook and extend.
Yes, please add more pictures! I know this was posted three years ago, but it has been one of my favorite creations since I found it. I'm particularly interested in that beautiful front axle; it looks very strong.