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Set 45804 HYDRO DYNAMICS Challenge Kit
FIRST LEGO League

HYDRO DYNAMICS Challenge Kit

The HYDRO DYNAMICS Challenge Kit belongs to the FIRST LEGO League's 2017/18 season and supplies the building elements for the competition's mission models, built around the theme of water. With 2,052 pieces and 372 unique parts, this set is built for a different purpose than a typical display model. Only one minifigure is included, since the focus sits on engineering rather than play scenes.

Set number
45804
Year
2017
Pieces
2,052
Minifigures
1
Theme
FIRST LEGO League
Different parts
372
What can I build with it?

View the official building instructions at LEGO® ↗

Parts list 372

As BrickLink list (XML)

Import on BrickLink: Wanted → Upload, upload the file (or paste its content), pick a Wanted List and add the parts.

Minifigures 1

Description

A kit for competition, not for display

Unlike most LEGO® sets, the HYDRO DYNAMICS Challenge Kit is not built into one finished model. Instead, it supplies parts for several small mission models that teams place on a competition table as part of FIRST LEGO League and interact with using their own robot. The 2017/18 season's theme centred on water and water management, which is where the HYDRO DYNAMICS name comes from. Unlike a typical set, the instructions therefore show no single finished overview model, but several independent build groups for the individual missions.

372 unique parts across several small builds

With 372 unique parts out of 2,052 pieces total, the kit offers enough variety to assemble several independent mission models at once rather than filling out a single large build. The colour scheme of Light Bluish Gray, black, Dark Bluish Gray and white is chosen for function rather than decoration, making individual elements easier to identify on a competition table. The parts list on this page makes it straightforward to reorder specific elements if any go missing or get damaged.

One minifigure, because this is an engineering set

The single minifigure included fits the nature of the kit: this is not about play scenes or storytelling but about technical challenges solved as a team. In practice, the parts are used alongside a programmable robot that moves, triggers or repositions the mission models on the competition field – the kit itself only supplies the fixed building elements, not the robot. For teams, that means both hands-on building skill and strategic thinking during the competition itself carry real weight.

Built for teams, schools and robotics clubs

The HYDRO DYNAMICS Challenge Kit is aimed less at individual builders and more at school classes, robotics clubs or teams taking part in FIRST LEGO League. Outside that competition context, the 372 unique parts are still useful as general technical building elements for other projects, beyond the mission models they were originally designed for. Many of the technical elements also carry over well into other school or hobby robotics projects outside FIRST LEGO League.

FAQ

What is the HYDRO DYNAMICS Challenge Kit used for?
It supplies the building elements for the mission models of the FIRST LEGO League 2017/18 season, themed around water, which teams interact with using a robot.
How many pieces does the set contain?
It contains 2,052 pieces across 372 unique parts.
Can the set be used for regular building outside the competition?
It is designed primarily for the FIRST LEGO League competition, though the technical parts included can also be reused for other builds.

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