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After posting in this thread (http://www.tamiyaclu...showtopic=65976) about wanting to see a 6x6 off road truck from tamiya, I decided it wasn't very likely to happen, so went ahead and started buidling one myself. I started off by building the rear axle walking beams: For the gears I used hot bodies 25T 1 module pinion gears. The axle itself is a modified Hi-Lift item. The standard bevel gears with splines in the dif were replaced with TT-01 items which use flats inside the bevel gears instead. i was then able to make my own drive shafts for driving the walking beams, which were loctited into the diff gears. After that I moved onto making the chassis rails. For this I used some steel box section, which I slit down the middle to make 2 chassis rails. I then tried to fit the rear axle using High llift leaf springs, but these proved to give toomuch height to the chassis, so i used some modified king hauler springs instead. Once the rear axle has been fitted, I then mounted the front axle. On the original truck I was trying to 'copy', the front axle uses similar suspension to that found on a tractor, but with some shock absorption being provided by a single leaf spring. The single leaf spring proved too awkward to implement, so i went with a simple pivoting system instead. The pivot that the axle swings on is a steel pin, which itself has a steel sleeve to rotate within, so there should be no wear issues there. Again, I used a hi lift axle for the front axle, but with wheels with a different offset from the rears to help counteract the width of the walking beams attached to the rear axle. The front end is slightly narrower than the rear end, but not significantly. Awesome articulation Next I built a transfer case as i wanted the truck to be a proper 6x6. I went with side by side input/output shafts, and produced a neat design using 2 0.8 module 20tooth motor pinions with a 5mm inner shaft diameter: Unfortunately however, the side by side layout is not suitable as it leaves the UJs at a steep angle running to the axles, and the front drive shaft would foul on the 3speed gearbox. This means i now need to do another casing with an over/under layout, to reduce the angle of the UJs and provide clearance for the front drive shaft. This is the latest progress on the truck: I now have a bed made for holding logs. This is going to be fitted to the rear end of the truck so that it can be tipped up to provide easy access to the battery, which sits between the chassis rails. Also the 3 speed gearbox has been mounted, along with the shift servo to operate the gear change: A demo shot to show the rear suspension articulation: and one more to show the light cluster fitted to the rear of the bed: The trailer that the truck is going to tow, left over from a tractor build that will now probably not happen: I should hopefully be making some rapid progress on this in the next couple of weeks, geting the bed fixed on, shorten the rear end of the chassis slightly, get the tow bar fitted for the trailer, and get the new transfer case built and fitted. I'll only need the steering servo fitted then before I can give it a quick test drive ....