Metal Windmill Water Pump Prototype

I need a working scale model of a metal windmill that can draw between 10 – 50 litres of water per hour from a shallow well. The look should be clean and purposeful—something more involved than a basic toy yet not an intricate showpiece. In other words, a moderate-complexity design: sturdy, reliable, and realistically engineered without unnecessary ornamentation. Key points to keep in mind • Material: all major structural and moving parts must be metal. • Capacity target: 10–50 L/h under a steady breeze (please state the wind speed you base calculations on). • Size: small enough for desktop or garden-demo use; I’m flexible here as long as it meets the capacity goal. • Drive train: open to gearboxes, direct crank arms, or other mechanical solutions—efficiency and durability matter more than style. • Power source: wind only (no hidden electric assist). Deliverables • 3-D CAD files (SolidWorks or comparable format) • Detailed engineering drawings with dimensions and tolerances • Complete parts list specifying metal types, fasteners, bearings, seals, etc. • Assembly guide with step-by-step instructions and photos or renders • Basic performance calculation sheet showing expected flow rate vs. wind speed • Short video or animation demonstrating mechanism operation (rendered is fine if physical prototype isn’t supplied) Acceptance criteria The design must pump at least 10 L/h at the stated test wind speed using a 1-meter static head. All files have to be ready for fabrication with no missing dimensions. If you have past examples of small wind-powered mechanisms or pump systems, sharing those will help me understand your approach. I’ll happily answer any technical questions so we can get this model spinning and pumping smoothly.