User Manual

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3DLabGANG project by Michael Hammer
The J 35 Saab Draken semi scale model
The 3D printed Saab Draken is designed to look and fly like the full size Draken. The lines
and proportions of the model match the real jet with its elegant double delta wing and
leading edge air intakes.
The optimized edf duct ensures great performance without the use of cheater holes or non
scale sized air intakes. Designed to be powered by a 50mm FMS electric ducted fan (4S
version) and a 4S2200mAh Lipo battery, the model has great performance and flight times
from 6-8 minutes. The model is designed to be printed from regular PLA or PolyAir 1.0. I
highly recommend using PolyAir 1.0 from 3DLabPrint because of its very good layer
adhesion.
The model is very strong and resilient to damage. The model requires no carbon tubes or
similar reinforcements. Just print the parts and glue them together with cyano glue. The
Saab Draken model is designed to be powered by a FMS 50mm EDF and a 4S2200mAh
quality battery. Only two servos are needed as the model is controlled by elevons - just like
the real Draken.
The model also features a large hatch for easy access to the battery and EDF. The hatch has
a hidden locking mechanism that is triggered by moving the dorsal antenna forward.
The model comes with a control throw gauge for easy adjusting of the correct movement of
the elevons. The battery tray is spring loaded and can be positioned in three different
positions making it easy to balance the model correctly at the Center of Gravity
The Saab Draken is designed with an optional catapult hook for safe and consistent bungee
assisted launch. The model can be hand launched but it is recommended to use a catapult
or bungee with 7-8 kg pulling force for a safe launch of the model.
All parts are designed to be easily aligned and glued with cyano glue.
Model specifications
Wingspan: 730mm
Length: 1092mm
Wing Area: 21,6dm²
Wing Loading: 53g/dm²
Airfoil: Eppler E180 modified
Ready to fly weight (4S2200mAh): 1150g
FMS EDF max thrust: 650 g
Thrust to weight ratio: 0,57