20
1.5 Weight
The UK prototype Nynja with Xlam coverings, Rotax 912ULS and standard
„console‟
dash, basic analogue instrument fit , installed intercom box, aerial and radio, and
including doors (see note below***), has been found to have a basic empty reference
weight of approximately 258kg. Options such as, wheel spats, spinner, thick carpet,
etc will have a weight penalty. Painting metal parts, cowlings and applying lacquer to
Dacron coverings will have a weight penalty. Additional avionics or strobes are also
surprisingly heavy.
It may be necessary to make choices in these options to ensure that the weight
remains inside the maximum permitted Zero Fuel weight (ZFW) for the aircraft. The
ZFW will vary according to the fuel burn of the chosen engine option. Max ZFW for
the 912ULS engine Nynja is 268Kg
Refer to the Homebuilt Aircraft Data Sheet (HADS) or the BMAA for further
information on the rules regarding weight for this class of aircraft.
Below is an approximate guide to the weight of specific options:
Wheel spat kit
+ 4.0Kg
Nynja wingtip fairings
+ 2.0Kg
Skyranger wing tip fairings (alternative to above)
+1.5Kg
Carb heat (912 engines)
+0.7Kg
Heater option
+ 1.0Kg
Spinner
+0.5Kg
912UL engine
- 1.5Kg
****Items that are non essential for flight and are easily removable may be eligible for
non inclusion in the ZFW calculation and be considered as payload. These items
may include:
Baggage hammock
1.5Kg
Doors
5.5Kg
Other items may be eligible
– See latest version Of HADS or refer to BMAA.
If a total aircraft parachute recovery system is fitted, then the max permitted MTOW
rises to 472.5Kg and Max ZFW also rises 22.5Kg to 290.5Kg. These systems can
typically be installed for around 15kg, allowing the remainder of the allowance to be
used for payload, or additional fixed items.
Weight is surprisingly cumulative and dividends will be gained by „thinking light‟
during every stage of the build. The benefits of an aircraft kept well under the
maximum permitted weight will be better performance and payload capacity.
Summary of Contents for Nynja Build
Page 1: ...1 Nynja Build manual Version 1 0...
Page 2: ...2 Figure 1 tube numbering scheme...
Page 3: ...3 Figure 2 Basic frame Skyranger...
Page 4: ...4 Figure 3 uncovered Skyranger frame...
Page 5: ...5 Figure 4 Uncovered Nynja frame Figure 5 Nynja fuselage with rear fairings removed...
Page 6: ...6 Figure 6 Nynja fuselage with rear fairings removed rear view Figure 7 simply assemble thus...
Page 22: ...22 Figure 13 forward fuselage from front quarter Figure 14 Cabin upper rear corner...
Page 60: ...60 Figures 65 cable arrangement further overview...
Page 86: ...86 Figure 100 Nynja elevator joiner with integral control horn...
Page 113: ...113 Figure 135 front jury strut attachment Figure 136 rear jury strut attachment...
Page 183: ...183 Figure 231 heavy duty power wiring schematic Rotax 912...
Page 184: ...184 Figure 232 low current wiring schematic Rotax 912...
Page 185: ...185 Figure 233 instrument wiring schematic Rotax 912...
Page 200: ...200 Nynja Build manual 1 0 18 2 One Piece Door Figure 250 one piece door frame...
Page 256: ...256 Nynja Build manual 1 0...
Page 257: ...257 Nynja Build manual 1 0 27 2 Wire locking...
Page 258: ...258 Nynja Build manual 1 0...
Page 259: ...259 Nynja Build manual 1 0...
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