Mercedes
Unimog (V4 Version)
Monday 29 August 2011, by
See it online |
Technical data |
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The first Unimog I designed was in the 2008 and had good climbing abilities for his technology (no frame, no portal live axle and no panels). Today, my new unimog is far better and many things were improved.
Portal live axles : high ground clearance with strong and reliable axles
Reinforced hubs : thanks to a new design of hub, enables the truck to not have too camber angle in downhill
94mm wheel : more ground clearance than the 81mm one
Double wishbone chassis : build around the battery box, which enables to have not lot of parts and a lower center of gravity, based on Jeep’s frame
Gear ratio : 12/20 and 8/24, 9 time faster than the first unimog, 3 timesfaster than the Jeep.
Ackerman steering : enable to turn with a smaller turning radius spite of the lack or differentials
Concerning the design, the cab is also new. It fits with the new scale and global design of U5000 series. The doors can be opened and the bonnet too. The fake engine is a 4-cylinder engine lengthways mounted (the first unimog had a crosswise engine, which was a mistake).
Regarding the climbing abilities : they are better than the jeep. Because of the lack of the differentials but the turning radius is bigger as wel. Here is a small board to compare Lego version angle and real unimog.
Real version VS Lego Version
Turning radius : 14.5m – 50cm
Weight : 11t – 1.2kg
Power : 180hp – 6W (0.008 hp)
Clibbing angle : 45° – 45° (100%)
Aproach and departure angle : 45° – 60°
Side Slope Angle : 38° – 45°
Forum posts
1. Mercedes, 29 August 2011, 20:14, by thirdwig
Great design Nico,
I applaud your new front axle, as I think the steering geometry is perfect. Getting the steering axis as close the wheels as possible is critical for good steering. I have found this gemetry to be effective in many of my trucks. Also, from the video, I am impressed with how well the gearing has worked for the offroad and climing abilities. Picking a good drivetrain gear ratio is very difficult, and it seemed to work well for this truck.
Well done.
View online : http://www.brickshelf.com/cgi-bin/g...
2. Mercedes, 29 August 2011, 22:26, by Clement
Nice truck Nico.
About the comparison with the real Unimog, why not compare specific measures? Like: HP/kg for HorsePower, or cm/cm(Wheelbase) for the turning radius.
Clement
1. Mercedes, 7 September 2011, 07:15, by Nico71
That’s a good point Clement ! I will have in a few day these specific measures :)