2011 - Unimog
|8065 Mini Container Truck
|8066 Off Roader
|8067 Mini Mobile Crane
|8068 Rescue Helicopter
|8069 Backhoe Loader
|8071 Bucket Truck
|8081 Extreme Cruiser
|8109 Flatbed Truck
|8110 Mercedes-Benz Unimog U400
|Mini Linear Actuator
A new, smaller linear actuator was introduced. With an integrated 3L bevel gear bracket, the cylinder itself was only 1 stud in diameter. Despite the smaller size, this actuator has an impressive force output but is limited by an internal clutch.
Both the standard 16 tooth spur gear and the related clutch gear were updated. The standard gear was reinforced at the center for increased strength. The clutch gear was revised to remove the castellations which had been previously capable of mating with the toothed 1/2 bushings but was never used. The new version has a smooth edge.
After having been used in only a single set in 1992, the small pneumatic compressor was replaced with a slightly longer 6L version. With only a single port and an internal check valve, it was intended to be used in conjunction with a motor and driven at high speed.
An inline pressure fitting was also introduced (shown in blue) to allow easy connection and disconnection of pneumatic attachments.
A set of portal axles (geared hubs) hub was released. These large housings can contain a gear reduction right at the wheel, reducing the need for high torque in the driveline. A new 3 pin hub snaps into the housing to support the wheel and can be driven by either a straight axle or a CV joint. One issue with these hubs is that their steering pivot point tends to be far inboard of the wheel causing a large tire sweep distance at max steering lock.
A new structural ball joint allowed for an axle and u-joint to pass through the center. This allowed a strong pendular suspension supported by the ball instead of the axle, and therefore enabled low friction power transmission through the joint.
A new version of the large shock absorber included a much stiffer spring than the previous and can be distinguished by the black piston rod.
Finally, a mating socket for the CV joint was created to allow the CV joint to allowed on axles like a U-joint and not just in conjunction with a wheel hub. This CV socket was typically mated directly a differential output gear.
A strangely shaped bracket (shown in black) or axle and pin connector was released. It saw initial use as a head for crane booms or outrigger feet, but later served as a general purpose connector as well.
Wheels and Tires
While the new Unimog tires are similar in aspect ratio and tread to the older 62.4 x 20 truck tires, at 94.3 x 38 R they were as big as anything ever made including the massive Power Puller tires. They are shown with a mini motorcycle for scale. They have a tremendous internal volume of air and a tall sidewall, therefore there is a limited amount of weight they can hold without a noticeable flat bottom.