"Vortex tunnel"
602 USD 
🔧 Design of the Vortex / Spinning Tunnel Attraction
Complete engineering project | Museum of Illusions (Poland)
Project Description
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:
Friction
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
Client's review of cooperation with Oleksandr L.
"Vortex tunnel"Thank you, we will continue to cooperate.
Freelancer's review of cooperation with Roman B.
"Vortex tunnel"During the discussion of the project, Roman agreed to work on the project in stages as the most effective option for collaboration. I recommend.
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