DLuders Posted May 5, 2012 Posted May 5, 2012 Chicago AFOL Thirdwigg has posted many fine Lego Technic Creations on his Thirdwigg.com website, including his recent Lego Technic Zil 132 Trial Truck. He wrote, "A couple of months ago I was struck by a new design by Waler. It was refreshing to see a well made Trial Truck based on something a little different. I wanted to make a model of my own. Thanks to him for the inspiration, and for the great ideas on the cab and the fenders. "...I decided to go with a pendular suspension for the first and second axle and a trailing live axle for the third axle. All three axles would have a differential and a a set of portal axles. The first and the third axle would also have steering linked together. As is often the case with my trucks, I had the pendular axles held by a turntable with the steering function passed through the turntable by use of a differential. The second axle was held by a turntable in the front, and the steering differential passed through to provide steering to the final axle. The drive function powered all three axles and would connect to the transmission and motor in between the first and second axle. "The third axle was a suspended live axle that had a trailing setup created with the new 8110 pieces. This would allow for rotational and vertical articulation while connecting the drive shaft and giving space to the steering function above. The steering shaft would allow for movement via a CV joint. The Power Functions M steering motor was placed in the rear, and used a simple 1:9 reduction. "A Power Functions XL was used for the drive function and was placed between the front two seats. The motor was mounted on a sliding assembly for the gearbox function, much like the design pioneered by ATRX. I used my to move the motor through three gears, for a final ration of 1:7.5, 1:4.7, and 1:3. The gearshift worked perfectly. While the drivetrain was a little complicated, the gearing was rather simple. The battery boxes were place above the second axle side by side. This kept the weight centered, and as low as I could get it. "Finally I added a cabin and a cargo area. The cabin was straight from Waler’s design, as was much of the fender area. I used technic panels to create the cargo area, which also gave me a space to place the two IR receivers. This also hid the two battery boxes, and the wiring, and generally cleaned up the truck. I created two small doors in the top to assist with picking up the ZIL. I was done." Quote
jorgeopesi Posted May 5, 2012 Posted May 5, 2012 I love trials trucks specially those Zils, I will finish mine some day... Interesting the steering system with the diferentials. Quote
Thirdwigg Posted May 7, 2012 Posted May 7, 2012 I love trials trucks specially those Zils, I will finish mine some day... Interesting the steering system with the diferentials. Thanks for your comments. The steering could have used a little more tinkering, as the rear skipped a little due to the CV joint. Quote
DLuders Posted May 7, 2012 Author Posted May 7, 2012 @ Thirdwigg: Welcome to Eurobricks! You should come visit this forum more often! Quote
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