The 3D printed L-39 Albatros is designed to look and fly like the full size L-39. The optimized edf duct ensures great performance without the use of cheater holes. Designed to be powered by a 50mm FMS electric ducted fan the model has great performance and flight times from 6-8 minutes. The model is designed to be printed entirely from regular PLA or PolyAir 1.0 from 3DLabPrint. Alternatively the model can be printed from LW PLA except fuselage sections 3 and 4 which should always be printed from regular PLA or PolyAir 1.0
If printed from regular PLA or PolyAir 1.0 it is recommended to use the 4S version of the 50mm FMS edf and a 4S2200mAh battery. If printed from LW PLA or PolyLight 1.0 it is recommended to use the 3S version of the 50mm FMS edf and a 3S2200mAh battery.
Wing Area: 12,3dm²
Wing Loading: 81g/dm²
Airfoil: Clark Y modified
Ready to fly Weight (4S2200mAh): 1190g
FMS EDF (4S) max thrust: 850g
Thrust to weight ratio: 0,7
The L-39 Albatros 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 6kg pulling force for a safe launch of the model.
Bill of Materials:
1mm pianowire, 600mm
2x100mm carbon rod, brass rod or aluminium rod
5x3mm magnets, 12 piece
Cyano hinges or similar
Thin or medium thickness cyano glue and accelerator spray.
Receiver: 4-6 ch
Servos: 3 x 9g HXT900
Battery PLA version: 4S2200mAh 25C or higher
Battery LW PLA version: 3S2200mAh 25C or higher