Works Polar Bear
Mini EP Planes
F-104J EDF４0
Fan ：GWS EDF40
Motor ：Feigao 12mm 5800kv > 20.2mm stator CD-ROM ( 0.4mm 15turn delta wired) 6pole rotor
Baterry ：Thunderpower 730mah 3cell > Hyperion 800mah 3cell
RX ：FUTABA R-146ip > berg 4ch FM
Servo ：FUTABA S-3108*2 (Airlon Elevator)
ESC : CC Phoenix 10 > CC Thunderbird 18
Weight ：274g > 295g
Scale ： 1/20
Build
Flying tail controll housing
Duct unit work
Canopy work
Covering with Oralight
Basic coloring
I use TAMIYA Polyca Color spray (for R/C car clear body) for first step, and paint with TAMIYA Color spray (for plastic model), very easy and light weight.
I made aluminium hub for fit EDF40 inpelar. Hub was pushed into motor shaft,use permanent Lock-Tight,and glue fan with CA(long time type).
Duct reinforcement are 1mm plywood.
Finish
Decal was mede with ink-jet printer rabel(clear type),coat with clear water colorspray.
Flyght
C/G point is 10mm forward from L/E. I use bangee code. tensyon 1.8kg
Climb is good. Roll stavirity is good too. I wondered to roll controll, it is no use. F104 is lifting body plane, so small wing is not weak point.
1970 from 1990, F-104J is major fighter in Japanese Self Defence Force. F104 R/Cmodel is our dream.
Dreams come true with EDF40. I'm very very grad!
Flight Video (wmv 5MB)
Motor performance up
I repraced Feigaomotor ballbearings, normal bearings to Japanese high quarity ball bearings (MNB stainress miniture bearings). I heared this way from Net Shop ROBIN.
After replaced test, I feel more motor speed. I wish to next flight!
Power unit renewal
I tryed CD-ROM EDF unit, Feigao 5800 has enougf power but I want more speed.
20.2mm stator(9 pole)
6pole rotor (original made)
0.4mm 15 turn DELTA connnect
MAX thurst 170g over (at 14A)
ESC: CC Thnderbird 18
Battery : Hyperion 800mah Li-Po 3cell
Total weght increased to 295g but flyght performance is good. Air speed is up, so elevator trim became light position.
Sound is Very Very good, over 40000rpm!
16/08/2007
Flight video ( with CD-ROM motor) (5MB wmv )
" #5 Kyusyu Nonbiri Fly in" at Kumamoto. My friend Toku-san recorded.
05/09/2007