Construction / tuning:

The goal during this conversion was to minimize the weight and to
achieve a little 3-d capable plane.

The first servos (4,4 g) did not work well, so they were replaced with the
same 8 g servos as used in the other MicroJet.

The key reduction in weight were:

- lightweight outrunner - 28 g
- lightweight controller - 9 g
- lightweight accu packs - half of the "fast" micro jet in weight.

Total weight saving: over 180 g compared to the fast one.

The outrunner was screwed to a motor mount that I saw out from a GFC
plate (2 mm thick) which I glued to the tail of the plane. As it turned out
during test runs the plate was too flexible and vibrations showed that a
reinforcement was needed. This was done by gluing the cover to the
motor mount with hot glue - no more vibrations!

In addition I capped the tall rudders and used the left pieces as fins in
order to improve aerodynamics.

The ailerons were cut and re-inserted with hinges - this was done to give
the servos less tension while in operation.

The canopy was extended to ease access to the RC components.

Additional air intake holes were drilled just before the motor.

And at the end a little decoration was applied too.


Flight Experience:

After a long wait due to the bad weather I was able to take this little new
plane for a spin. Although I have hoped for docile flight patterns, it was
the contrary - the plane is bitchy on the rudders and after the first flight I
had to add 50 % expo. Now we were talking. Slow rolls, vertical climbs -
in slow motion, loops, inverted flights, etc. Great fun!
RCSKYLINER.com
Site for radio controlled airplanes and more ...
NAME:
 
microJET . LIGHT - 3 D conversion
PRODUCER:
 
Multiplex
TYPE
   Foam (Elapor)
WING SPAN:
 
660 mm
LENGTH:
 
600 mm
WING AREA:
 
13 dm2
WEIGHT PER DM2
 
34,6 g / dm2
WEIGHT (producer):
 
450 g
ACTUAL WEIGHT:
 
280 g (2 cell) or 301 g (3 cell)
MOTOR:
 
Robbe Roxxy C 22-20-20
MOTOR DATA:
   Brushless outrunner, 20 mm dia, 300 W,
28 g, 1330 U-min,  8 A
PROPELLER:
   APC 7 " x 4 " (3 cell) or 8 " x 4 " (2 cell)
BEC / CONTROLLER:
 
Robbe Roxxy BL Control 710, 10 A
RECEIVER:
 
Futaba 2,4 GHz, 6 channel, R-6006 HFC
BATTERY:
 
Lipo Ray, 2 or 3 cells, 850 mA, 25 c
CHANNELS:
 
3 (Delta mix: ailerons & elevator, 1x motor)
SERVOS USED.
   all:: 2x Power HD 1800 (8g servos)
RATING - BUILDING:
 
Advanced
RATING - FLYING:
 
Intermediate - professional
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