SZD-39 Cobra 2.5M ARC by Royal Models Hardware The wing is partially sheeted

The wing is partially sheeted and has generously dimensioned wing-tip fins

then jitter afterwords

Suggested Setup for 11-13kg Models:

64sq dm) Flying Weight 15

Eco Series ECO 2308C-V2  KV 1180 Stator Wind 14 Turns Stator Teeth / Mag

SZD-39 Cobra 2.5M ARC by Royal Models Hardware The wing is partially sheetedRoyal Models' SZD 39 Cobra is a versatile, inexpensive 2. 5 meter semi scale glider with great all rounder performance. Royal Models kits are built by our friends in the Czech Republic. We really like the price for performance ratio of these models. The fuselage is fiberglass construction. The gel coat and layup work are very good and the fuselage has a good stiff feel in the hand. The fuselage canopy is also glass and comes from the factory with a