If you are building a Motorglider, the starboard speedbrake actuator cable
crosses
the tunnel just forward
and below the inboard seatbelt hardpoints. These are thick push-pull cables.
Yes, I said starboard. Both
sides are actuated by a torque tube on the floor of the pilot's compartment.
Shaun
----- Original Message -----
From: Nick Hammond
Subject: RE: The 'tunnel'
Ferg,
OK, I'll bite. Can send a sketch separately if you let me know what formats
you can read (e.g. .CAD or .DXF?) but the following word picture may help.
The tunnel cross section forward of the seat bulkhead is shaped like an
inverted
T.
The wider section at the bottom (the crossbar of the T) is about 220 mm wide.
About 30 mm at either end of this is occupied by the rudder cable pulleys.
Inboard of this, some space must be reserved for routing the fuel lines from
the tank outlet bosses to the selector valve. I am also using 3/8 aluminium
tubing
having installed the Europa-supplied rubber hoses and then ripped them out
in disgust.
The upper section (the vertical of the inverted T) is narrower, about 80mm
wide
at the top and 110mm at the bottom. It is offset about 25mm to starboard from
the centreline of the lower section.
The fuel selector valve in its standard position (and I can see no need to
move
it) occupies most of the port side of this section. Its maximum protrusion
into the tunnel is about 50mm at the centre of the valve, about 95mm below the
top of the tunnel. The whole assembly with the aluminium tubing from the tank
outlets and to the gascolator takes most of the vertical space on the port side.
The upper starboard part of the tunnel is reserved for the Flap operating
pushrod
(about 30mm wide and 50mm deep -- see the cutout in the drawing of the tunnel
bulkhead in the manual). Below this is free space.
Overall, things are not crowded. In the middle of the lower section, on the
fuselage
floor, there is plenty of room to run electrical cable and the 3/8 lines
to and from the fuel pump and gascolator which will be mounted below the baggage
bay.
I'm not sure why your fuel drains would go anywhere near the tunnel. If you
are
using the very ugly Europa drain mod they go aft from the tank outlets via
rubber hose. I am using machined three port fuel outlet boss similar to Graham
Singleton's and have mounted the drain valves directly to the centre port.
Hope this helps.
Best regards,
Nick
-----Original Message-----
Subject: The 'tunnel'
Cheers,
My plea for info on the constituents of the XS cockpit 'tunnel'
brought no takers, so am trying again. I have a Mark 1 monowheel with XS cockpit
(the "L.A." mod). This restricts items in the bottom section of the cockpit
just ahead of the belly inspection panels and behind the 'mudguard'. There are
at least two of us keen to see where everything goes.
I have compounded the crime by opting for 3/8inch Alum fuel
tubing
and water drain mods but am prepared to modify my thinking if unsuccessful.
Can anyone 'out there' sketch a 'thwartships cross-section of
their
tunnel? A simple sketch with clearances achieved would give us an idea. Fuel
lines, rudder cables, gascolators, electric cabling, relief tubes(?),
pyrotechnic
units - anything.
Much obliged,
Ferg
A064
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