Oshkosh LEGO

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1977 Oshkosh P15

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

Here's a video of it in action.



It is my first scale Model Team creation (1:30) of a real vehicle. I have aimed for a high level of detail, while still maintaining the functionality.

Here are some more clear samples of the pictures I used in the video

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

Reduced: 85% of original size [ 600 x 270 ] - Click to view full image

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

Functions
Apart from smallest moving parts, such as doors

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

all functions are motorized using Power Functions remote control.

Steering is with dual tooth racks to minimize the width

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

An NXT motor was the best for the drive in this model. It allows for a differential on each axle while only using 3 additional cogs

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

The motor for the pumps is an RC motor which is switched on using a 9V switch to avoid going through a PF receiver (to maximize the power and run without having to hold down a button on the remote)

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

The 9V switch is beneath the receivers

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

To the left of the 9V switch there is a mechanical switch for the pneumatic hose. With this you can choose the active cannon. (seen more clearly in the video)

I use a bottle to hold the water. All other parts are from LEGO, and if you insist on using only LEGO parts, you can use a small air tank instead, as I did with the Rosenbauer ARFF

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

It is all nicely packed inside

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

The cannons turn together with the steering and their height is controlled using flexible tubes

Reduced: 64% of original size [ 800 x 600 ] - Click to view full image

Stats
Just for fun. Here is a comparison with the real model. The last numbers in the rows are what you get if you multiply the numbers from the LEGO model up to the real size.

stat: LEGO, real, scaled
length: 48cm, 14,28m, 14,40m
width: 10,4cm, 3,10m, 3,15m
Weight (full): 2,446kg, 59410kg, 66042kg
Water: 0.25L, 24180L, 6750L
HP: 2.03W, 884HP, 74HP (NXT motor power found here)

Brickshelf gallery with more pictures.