Mini Unimog Fire Brigade

After introducing my Mini Version of the LEGO^® Technic 8110, I have to build another Version. A Fire Brigade Truck, inspired by VFracingteam's Unimog.

Its main features are as follows:
- 7-wide, compared to the 9390 axle width
- Live axles with suspension
- Portal axles
- HOG (Hand of God) steering

Fire Brigade Version:
- Front PTO with water cannon
- Water tank and pump

And this is what I came out with.

The Unimog is used in rough terrains and with the snorkel it's able to cross small rivers.

A water cannon lets the firemen extinguish the fire from inside the cab.

The roof contains some tools and the "water pump" which is an old Pneumatic Spring Cylinder (5103). Its main advantage over the new pumps (2797c02) is the ability to suck in the water. 

A Pneumatic Airtank (67c01) is used to store the water.

The pump can be lifted to be operated easily and is stored when not in use.

 

The most important part of the pumping mechanism is the Pneumatic Distribution Block 2 x 4 with Non-return Valve (4692). There is the tank insert on the left, pump in the middle and the water outlet on the right. 

It's a Fire Truck, so it has to be able to extinguish fire. To proof its ability I made a short video.

 

More detailed pictures to be found on Brickshelf.
Check if you have all the needed parts to build it yourself using Rebrickable.com
You can also download the LDD-File directly.

Note:

I used colored round Plates to show you where to connect the Hoses.

LEGO^® Digital Designer lacks in some parts, you have to replace the fake parts of these:

- Pneumatic Spring Cylinder (5103)
- Pneumatic Airtank (67c01)
- Pneumatic Distribution Block 2 x 4 with Non-return Valve (4692)

With best regards,

Jan

Small Fake Engine

After some long days at the university, I spent an evening building some random stuff. Related to my other smaller MOCs I developed a tiny two cylinders fake engine, which could be used in 7-wide-vehicles.

According to the small scale the Technic Engine Cylinder (2850) and it's half stud Crankshafts (2853, 2854) were no option. In the end I came up with this concept using a Bar 4L Lightsaber Blade (30374) and two Tiles, Modified 1 x 1 with Clip (2555).

As usual I made a short video to show you the sweet engine sound.

Additionally I provide you something new. My first try in a LEGO^® -style building instruction. I will try to develop my own style in the future and hopefully have some time to create some other instructions, too.

Note:

I recommend to use the old Technic, Axle 2 (3704) instead of the Technic, Axle 2 Notched (32062) to guarantee a smooth run. 

With best regards,
Jan

Motorized Pneumatic Pump

One of my plans for 2012 is to build a pneumatic walker. Therefore, I have to guarantee a sufficient airflow. Main restrictions are space and of course weight. So, my first decision was to use only the Power Functions M-Motor (58120c01) instead of the far more powerful, but two times heavier XL-Motor (58121c01).

After several attempts with different arrangements and a destroyed Pneumatic Pump (5107-1) (yes, I removed the spring and afterwards it couldn't hold the pressure anymore), I started to copy some designs from other builders like e.g., Sariel's compressor and rocking compressor. But I was pleased with none of them.

I wanted something more stable and reliable and when I discovered radbot's concept, I was enthusiastic to build a frame housing those 8 Small Pumps (x191c01). To build it, I used 5 "Liftarm 5 x 7 Open Center Thick" (64179). Because of their numerous Technic holes, you can easily implement the pump in any other creation. The small dimensions of 7x10x10 studs improve the implementation as well.

Because of the 5.5L of the Small Pumps, I used the Pin Connector Perpendicular Long (32557) in order to achieve a 2L displacement on the crankshaft.

Pin Connector Perpendicular Long (32557) in order to achieve a 2L displacement on the crankshaft

 The two crankshafts are counter-rotating

To show you the pump in action, I made some videos. Especially the fancy crankshaft movement made me happy.

More detailed pictures to be found on Brickshelf.

With best regards,
Jan