This is my Second LEGO RC MOC. It was completed on 11/26/2013. It features drive with XL Motor, Servo Steering on front axle, 4x4 Drive, and full suspension.
About this creation
After knowing how the appearance failed on my Street Buggy model I have decided to create something that can look good, have good performance over rough ground, and have space for a lot of detail. Another one of my goals is to create something that is not red, because I have way too many red pieces compared to the other colors I have. I thought at first that a yellow colored tractor with full live axle suspension would work.
Then I noticed that a tractor is too small for 4x4 drive, two motors in the front, and live axle suspension, or it would be very wide and the seat will be out of proportion with the rest of the body, so I made a yellow Pick-up truck instead.
The building process was pretty well, the design turned out great. A problem was that I have to properly reinforce the front axle - it keeps coming apart. Another one was the doors - they can be only attached at one point to open - the doors are a bit heavy and tilts when opened - and I found no possible ways to reinforce it - so the doors can't open. The bed of the truck needed a lot of reinforcements, too. That was one of the most challenging parts of the building process, as the rear suspension relies on that part to keep it up.
At the end, I realized I did not have enough yellow pieces - I would have to get a lot of yellow beams - which is expensive, or yellow 5x11 panels, which the cheapest one is more than $4.00 at Bricklink.
I have solved that problem by using black pieces for the rear section, and I actually think that looks pretty cool, and because I had a lot of space left, I also added some wheels in the bed to resemble the load it is carrying.
However, I have noticed a problem when it was finished. I put too many gears in the drivetrain. It was extremely hard for it to drive on anything but flat ground or grass, so the only choice I had was to build an obstacle for the truck and drive it only a little on grass and snow.
Overall, I think the design was much better than my Street Buggy, but the low efficiency for the drivetrain was not good.