@ Tao Melon: There are actually 5 diffs in the model since the 4 axles are divided into two groups of two axles each. These two groups have 1 differential inbetween. (long model, turning, different speeds in model) The two front axles are steered, you could easily clone the front steering mechanism to make the rear steer too. The only thing is that THAT sort of feature is not used much in real life trucks. maybe because the payload rests mostly on the back two axles and non-steering axles are stronger. (less parts, less clearance and thus less wear). It certainly is NOT necessary for a nice functioning model. It even might be unwanted. Keep me updated on your project! grtz, Ivor

hi ivor kreuger.Thank u so much for your reply,as a beginner,I still have some questions.how many differentials are there in the truck?I can see 4 in the bottom view,and there seems to be more.I guess the purpose of the additional diffs is to make the 4 axles be able to rotate at different speed,is that right?and is each differential lockable?your truck is 4 wheels steered,is it possible/necessary to have all wheels steered?I appreciate you for sharing your knowledge.

Hi Mr. Melon, Thankyou for your comment. always appreciated. As for the chassis structure: The four axles are identical copies of each other. You should be able to build the drive train from the picture of the underside. Since the model is long gone, currently working on a suzuki samurai with the unimog portal axles, it is difficult to give detailed instructions. Mainly it consists of building the axle modules and cthen connecting the 64179 parts together to form a chain and thus the chassis beam. You can always mail me for other questions regarding the project, I might be able to reconstruct some....sometime. good luck, and would love to see you activate your acount and upload some pics... grtz

perfect truck! I really want to build a similar truck for myself, could you please share the basic structure of the chassis? It's looked complex.

i really love your truck, could you give some description about the basic structure of the chassis?

:O AMAZING

Jo, Thanks mate! This is the first moc that really gave me food for tought as some might say. But the reward is great because all the gears are in the correct place, ratios are perfect which means in this case that all axles have the same speed of rotation, so no breaking gears this time. Need to work on: - two more diffentials, non-lockable. Between axle 1-2 and between axle 3-4 - More rigid Chassis - Less Bricks

This is some serious engineering! Almost gives me a headache like math or something. But this is great! Oh, and your lawn needs mowing.