Parts and Components

4130 and Spruce parts and components will be available in late 2023. CAD files are being completed and some test fittings have been cut. Please look back every now and then to see the progress and updates. THANK YOU

Build Guides

Download a .pdf of the original hand written builders manual from 1958. Also the 2023 Builders Guide referencing the original plans. The Build Manual also describes modifications and updates to materials and practices.The original manual was missing page 9, regrettably.
Original Plans Page

A sample from the original blueprints. In the 1950's a lot of build decisions concerning design was left up to the builder and not gone into in great length on the drawings. The designer also "borrowed" ideas from such classic and timely designs as the Pietenpol Aircamper.
Sample CAD drawings

Redrawing the blueprints in the Vellum 2D CAD program is seemingly a never ending task. Each new drawing references a specific page and assembly or GA drawings have been broken down to individual components. All bend allowances for any formed fitting has been calculated and included in the "flat pattern".
3D Modeling of Fittings

A picture is worth a thousand words. Most of the 4130 fittings have been imported into a 3D Modeling program, rotated for the best 3D view and saved here. Flat 2D blueprints are, 95% of the time, more than adequate to represent a part, but seeing it as intended, is something entirely different.