Here's several videos of tuft testing.
Cowls are on, NACA diffuser is the only device in the lower cowl. No ramps or cuffs directing air.
Added a 90 degree 5" duct to point at #3
Replaced the 5" duct with flat ramp. Video 1 Video 2
This is my supplemental builders blog for a Cozy Mark IV which is a 4-seat, single engine, homebuilt light aircraft designed by Nat Puffer, with parts and plans supplied by Aircraft Spruce & Specialty Co. The aircraft is built from plans using basic raw materials. It is not a kit aircraft, though many small parts are available prefabricated. The Cozy is similar in design and construction to the 2-seat Rutan Long-EZ, from which it is derived, with approval from Burt Rutan.
Pages
Chapters (Blogger Labels)
- Chapter 01 Description and Introduction
- Chapter 02 Bill of Materials
- Chapter 03 Education
- Chapter 04 Fuselage Bulkheads
- Chapter 05 Fuselage Sides
- Chapter 06 Fuselage Assembly
- Chapter 07 Fuselage Exterior
- Chapter 08 Head Rest and Seat Belts
- Chapter 09 Main Gear & Landing Brake
- Chapter 10 Canard
- Chapter 11 Elevators
- Chapter 12 Canard Installation
- Chapter 13 Nose - Nose Gear & Brakes
- Chapter 14 Center Section Spar
- Chapter 15 Firewall
- Chapter 16 Control System
- Chapter 17 Pitch and Roll Trim
- Chapter 18 - Canopy
- Chapter 19 - Wings/Ailerons/Attach
- Chapter 20 - Winglets & Rudders
- Chapter 21 - Strakes
- Chapter 22 Electrical System
- Chapter 23 - Engine Installation
- Chapter 24 Armrests Seats Fairings
- Chapter 25 - Finishing
- Chapter 26 Upholstery
- Cozy Builders
- EAA
- FAA
- Flight Testing
- Landing Brake and Center Console
- M Drawings
- Maintenance
- mods
- Skunk Works
- Trip reports
- Wheel Pants
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Relevant links for supplies and other info
- Cozy IV Specs
- Cozy Builders - Google Groups
- Unofficial Cozy Builders Site - updates to plans and much more information (maintained by Marc Zeitlan)
- Cozy Builders Mailing List, POH and other info
- Cozy Builders - Map
- Official Cozy Aircraft Site (outdated site)
- Canard Zone
- Central States Association - Facebook
- COBA Canard Owner and Builder Association
- Builder Sites (maintained by Erland Moen)
- Experimental Aircraft Association
- Rutan Aircraft Flying Museam
- Dennis Butler's Grand Champion
- aerocomposites.aero - Gear legs and fiberglass parts
- Aircraft Spruce Cozy IV Parts
- http://www.wicksaircraft.com/index.html
- 3:23 Composites
- SDS EI EFI
- Cozy Girrrls
- Skycraft Surplus
- www.enginegearonline.com/
- Infinity Aerospace
- NIck's web site
- https://www.stuarthose.com/
- http://www.tostenmfg.com/
- www.eurekacnc.com
- Featherlite (http://aerocad.com) parts
- http://aeroelectric.com/
- www.long-ez.com/
- Earl's Performance Fuel Systems
- FAA Amateur Built Operating Limitations
- FreeFlight Composites
- ADS-B blocking
- FAA - A&P / Experimental Builder Experience
- EZ.ORG moved to ez.canardaircraft.com
- Fiberglass Warehouse
- High Temp Epoxy
- Marc's Nose Gear parts
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