ProteusV2

thingiverse

This upgraded Proteus slope-soarer boasts enhanced flying characteristics thanks to deliberate modifications made to its sweep, washout, fins, and elevon hinges. Specifically, increasing the leading edge sweep from 22 degrees to 26 degrees significantly reduces the likelihood of spinning out at the top of loops. Boosting the sweep also shifts the center of gravity (CG) backward, rendering a lead nose-weight unnecessary even when using four AAA NiMH cells. This configuration still yields excellent flight performance with the CG positioned 5mm behind the dimples on the fuselage. To further improve flying dynamics, washout has been reduced to 2 degrees from its original setting of 3.5 degrees. A crucial modification involves adding slots to the elevons for hinging using 0.3 mm CA sheet, such as that available at hobbyking.com (https://hobbyking.com/en_us/ca-hinge-sheet-180mmx140mmx0-3mm.html). This approach simplifies elevon attachment and eliminates trimming changes associated with traditional hinging tape. Each hinge should be cut to a 14 x 27 mm rectangle. Instead of gluing the CA sheet into the wing or elevon, simply insert the hinges and apply a single layer of hinging tape on top for sealing. For printing and build instructions, refer to the original Proteus design (https://www.thingiverse.com/thing:2086413). It is highly recommended to print the nose using flexible filament, which significantly enhances crash resistance. Note that this upgraded version requires a printerMaxZ setting of 230 mm and a build volume of 200x200x230 mm.