assembly structure base

The basic building block of the MoBil system — a 1,33 m aluminium tube-and-connector frame. Support, visibility, shelter or stage, depending on what you mount on it.

• Type: Structure
• Status: In use
• Primary function: support / visibility / shelter / stage

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Everything you need to build one cube. All tubes diameter 50 x 2 mm wall. Click a part for specs and handling.

• Connector nodes: 8 (each = 2x T + 1x X)
• Tubes total: 18 - tube length: 27,23 m
• Tube weight: 22,2 kg - connector weight: 8,6 kg - total: 30,7 kg

Source: MoBil builder. Locking-pin count to confirm.

The cube is built from 8 corner nodes. Each node = the connector assembly (2x T + 1x X), joined by tubes.

1. Build the 8 connector nodes. For each: take one T-connector upright (slot up), slide a second T-connector over it downward, slide an X-connector to the middle, rotate to lock.
2. Make the bottom square. Join 4 nodes with 4 straight tubes. Pin each joint.
3. Add the 4 uprights. One straight tube into each bottom node, pointing up.
4. Close the top square. 4 nodes + 4 straight tubes on top of the uprights. Pin.
5. Brace with diagonals. 6 diagonal tubes (45) for load and wind stability. Pin.

Each step maps to a stage in the viewer above.

• Pinch points at every connector - keep fingers clear when seating joints.
• Don't hammer pins with the frame unsupported; seat the joint by hand first.

• Max vertical load (stage/roof): . kg (to define / test)
• Do not climb the frame unless rated and ballasted.
• Wind: above . km/h, remove banners/roof and ballast or take down. (define)
• Never leave a tall configuration up unattended in changing weather.

• Footprint anchoring with water weights at the base corners for any raised or sail-bearing configuration.
• Ropes to fixed points where available.
• Minimum ballast: . kg per corner (define per configuration).

1. Remove add-ons and ballast first.
2. Pull top pins, lift off top square.
3. Pull uprights.
4. Break bottom square.
5. Nodes can stay assembled for next time, or break to flat-pack.

• Packs into: normal bike trailer (tubes + euroboxes for connectors).
• Store dry. Check pins aren't bent before repacking.

What this cube accepts:

• Roof
• Hamac
• Banners
• Light inflatable
• Cinema screen

Larger version: Double cube.

• Photos - Drawings - Exploded diagram
• Linked: Connector (the core joint)

Designed by . - Year . - Iteration . - Last updated: .