Manual Controlled
Crane Truck "42009c"
This model is an alternative (or C-model) design of the original LEGO® Technic set 42009 (Mobile Crane MKII).
The model is designed with play-ability in mind. Driving and turning curves works out smoothly, whereof the steering operation is provided from the backside (equal as the 42009 Mobile Crane MKII).
The cabin tilt function can be done by turning the little black gear in the grille of the truck's front side.
When swinging down the yellow panels between the front and rear wheels, access is given to the outrigger mechanism. Just turn the gray gear to extend or extract the outrigger of that side. Outrigger stabilization by turning the gray gear on the outrigger.
Operating the crane is done by 3 cranks. Two are used to raise/lower the 1st or the 2nd boom section. The 3rd crank operates the crane slew; the crane can rotate the full 360 degrees and even drop pallets in front of the cabin! The 2nd boom section can be extended by operating the gray gear on it. The clamp can be opened or closed by turning the gray gear on top of the clamp.
Fun part of the crane is the ability to pick 2 stacked pallets together. And, stacked pallets are really stacked: no sliding possible.
Last but not least: pallets can slide backwards of forwards on the loading deck without moving sidewards!
The model is designed with play-ability in mind. Driving and turning curves works out smoothly, whereof the steering operation is provided from the backside (equal as the 42009 Mobile Crane MKII).
The cabin tilt function can be done by turning the little black gear in the grille of the truck's front side.
When swinging down the yellow panels between the front and rear wheels, access is given to the outrigger mechanism. Just turn the gray gear to extend or extract the outrigger of that side. Outrigger stabilization by turning the gray gear on the outrigger.
Operating the crane is done by 3 cranks. Two are used to raise/lower the 1st or the 2nd boom section. The 3rd crank operates the crane slew; the crane can rotate the full 360 degrees and even drop pallets in front of the cabin! The 2nd boom section can be extended by operating the gray gear on it. The clamp can be opened or closed by turning the gray gear on top of the clamp.
Fun part of the crane is the ability to pick 2 stacked pallets together. And, stacked pallets are really stacked: no sliding possible.
Last but not least: pallets can slide backwards of forwards on the loading deck without moving sidewards!
Functions
Technical
Steering axles 1,2 & 4
Differentials on 3rd axle
Working V8 engine
Cabin tilt to access engine
Outrigger extensions
CRANE
1st & 2nd boom lifted
2nd boom extension
Slew of 360°
Clamp open & close
Differentials on 3rd axle
Working V8 engine
Cabin tilt to access engine
Outrigger extensions
CRANE
1st & 2nd boom lifted
2nd boom extension
Slew of 360°
Clamp open & close
Manual
Cabin doors open & close
Outrigger swing-down panel
Raise-able wind deflector
Stackable pallets
Outrigger swing-down panel
Raise-able wind deflector
Stackable pallets
Specifications
Dimensions
Length - 57 cm
Width - 16 cm
Crane 'down'
Height - 24 cm
Crane 'up'
Height - 49 cm
Weight - ~2,1 kg
Width - 16 cm
Crane 'down'
Height - 24 cm
Crane 'up'
Height - 49 cm
Weight - ~2,1 kg
Parts
2.290
Reconstruction high-way A1, nearby Weesp, The Netherlands
Building Info
Parts not used of Original 42009 set
Not all 2.606 parts of the original set 42009 are used within the Crane Truck 42009c.
On the picture you can see all the parts not used; the number of 'left-over' parts is 316.
That is quite reasonible in my opinion as a significant quantity of them are axles and pins.
And, it was a deliberate choice to have this model manual operated.
Not all 2.606 parts of the original set 42009 are used within the Crane Truck 42009c.
On the picture you can see all the parts not used; the number of 'left-over' parts is 316.
That is quite reasonible in my opinion as a significant quantity of them are axles and pins.
And, it was a deliberate choice to have this model manual operated.
Development process
Given the number of wheels (10x) in the original set, it was quite obvious for me to design a truck. The 2 front axles and rear axle can steer, the 1st rear axle has a twin-wheel set-up. To make effective use of the avaialble linear actuators and gear racks, I decided to add outriggers and a crane as additional functionality. Putting these thoughts together I started with the crane design including a clamp, based on the roll-loader crane (see Stone Trailer Truck). The next design step turned to be the front part of the truck with the cabine, to assure an appealing look based on the available parts/color of the original set. Having succeeded, I developed the outriggers and the loading bed of the truck.
Finally the chassis sides (mudguards and striping) and the rear side were designed. The 3 pallets with it's cargo were build with the left over parts. The result is the Crane Truck 42009c.
Challenges in designing this time was the limitation in parts and the available colors of these parts. And, I really wanted to use all wheels, the linear actuators, gear racks and panels; this is the case except for just 1 mini linear actuator. Regarding the chassis sides and loading bed: they needed a couple of iterations before it worked out the way I liked it.
The fun part is that the pallets can slide for/backwards on the loading bed quite easily without falling off.
Given the number of wheels (10x) in the original set, it was quite obvious for me to design a truck. The 2 front axles and rear axle can steer, the 1st rear axle has a twin-wheel set-up. To make effective use of the avaialble linear actuators and gear racks, I decided to add outriggers and a crane as additional functionality. Putting these thoughts together I started with the crane design including a clamp, based on the roll-loader crane (see Stone Trailer Truck). The next design step turned to be the front part of the truck with the cabine, to assure an appealing look based on the available parts/color of the original set. Having succeeded, I developed the outriggers and the loading bed of the truck.
Finally the chassis sides (mudguards and striping) and the rear side were designed. The 3 pallets with it's cargo were build with the left over parts. The result is the Crane Truck 42009c.
Challenges in designing this time was the limitation in parts and the available colors of these parts. And, I really wanted to use all wheels, the linear actuators, gear racks and panels; this is the case except for just 1 mini linear actuator. Regarding the chassis sides and loading bed: they needed a couple of iterations before it worked out the way I liked it.
The fun part is that the pallets can slide for/backwards on the loading bed quite easily without falling off.
