168
c) At this position a T-piece with a restrictor connects to allow the anti-vapour
lock fuel return line to pass neatly behind the gearbox, Figure 216.
This restrictor should be a precision Rotax/Skydrive item.
d) The front of this T-piece then connects to the fuel pump outlet (the smaller
diameter pipe spigot on the pump).
e) The fuel supply pipe from the tank connects to the inlet of the fuel pump (the
larger diameter pipe spigot on the pump).
Note that although the fuel pump inlet and outlet tubes are of different
diameters, the fuel tube will fit over both of them.
A useful tip: to fit
¼” bore flexible rubber pipe to 8mm metal tubes
tenderise (as per a steak) the end of the rubber pipe, or heat it by
dipping into boiling water. This softens the end. Then with a small drop
of light oil (3-in-1) placed on the tube or the pipe, slip the rubber tube
over the metal pipe. A slightly larger pipe clip (no13,14 or 15 depending
on fuel line wall thickness) should be used.
The fuel supply pipe and the fuel return pipe both pass behind the
gearbox and back over middle of the engine and under the centre piece
of the engine mount, to pass through the firewall beside the rear of the
starboard upper engine mount. Make sure the holes in the firewall are
edged or grommeted to prevent the fuel lines from Chafing.
f) Once through the Firewall the rubber fuel hose is connected to aluminium fuel
pipe. This runs along the underneath of the starboard TU19 tube down
towards the fuel tanks.
Smooth the ends of the pipe with a fine file
– they are supplied with rough cut
ends. Secure the aluminium fuel pipe to the TU19 using cable ties spaced
every 150mm or so. It is soft pipe designed for bending so it can be contoured
where necessary simply by hand. To prevent chafing cut some short (20mm)
lengths of the Tygon fuel tubing (the transparent yellow or blue stuff) split them
along their length and clip them over the aluminium fuel pipe at the positions
to cable tie, to stand it off slightly.
Figure 217 aluminium fuel line, cable tie and standoff.
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...
Page 260: ...260 Nynja Build manual 1 0...
Page 265: ...265 Nynja Build manual 1 0...