A engineer or engineering team is needed to develop a complete technical project for an attraction of the type Vortex / Spinning Tunnel (rotating cylinder around a stationary bridge).

❗ IMPORTANT:
A real engineering project with calculations is required, not a concept or 3D visualization.

Input Data (for the design of the STRUCTURE)

Dimensions of the area for Vortex (maximum)

Length of the structure: ≤ 5.0 m
Width of the structure: ≤ 4.0 m
Height of the structure: ≤ 3.5 m

⚠️ These are the dimensions of the structure itself, not the room.
The project must fully fit within these limits, taking into account casings and gaps.

Main Parameters of the Attraction

Type: rotating tunnel + stationary bridge
Working length of the tunnel: ~5.0 m
Recommended diameter of the tunnel: ~3.0 m
(2.8–3.2 m is allowed with technical justification)
Width of the passage on the bridge: min. 850 mm (goal — 900 mm)
Minimum clearance height above the bridge: ≥ 2.2 m
Up to 10 visitors at the same time
Calculated weight: 100 kg / person

Rotation and Safety

Adjustable speed: 4–10 rev/min
Smooth start and stop (via VFD)
Emergency Stop — ONLY FOR STAFF
No E-Stop buttons for visitors
Fail-safe stop in case of power loss
Complete protection against access to moving parts

What Needs to Be Done

🔹 Structure and Mechanics

Load-bearing frame
Rotating cylinder (rings + longitudinal ties)
Roller supports with adjustment
Stationary bridge with railings and anti-slip coating
Protective casings and entrance/exit portals
Load, strength, and deflection calculations

🔹 Drive

Calculation of torque and power
Comparison of 2 drive options:
1. Friction
2. Belt or chain
Selection of motor-reducer and frequency converter

🔹 Documentation

3D CAD (STEP)
Drawings (PDF / DWG)
Calculation report
BOM / material specification
Installation and maintenance instructions

Submission Format

PDF (drawings + calculations)
STEP / DWG
XLSX (BOM)

Requirements for the Performer

✅ Engineering experience
✅ Rotating mechanisms
✅ Public facilities / attractions
❌ No 3D visualizers without calculations

Please indicate in your response

Examples of engineering projects
CAD systems
Estimated completion time

Proposals 2 Discussions 1

Vladyslav B.

47 2

Budget: 25000 UAH Deadline: 25 days

I carry out the development of custom equipment and products. I use the software package Autodesk INVENTOR. Examples of completed work can be found in my portfolio.

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