
Flughandbuch XCitor
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3 OPERATION LIMITS
3.1 INTRODUCTION
This chapter contains information about the operational limits for the safe use of
the XCitor. These data are the result of flight tests as well as of theoretical
calculations.
There are explanations of the instrumentation.
The XCitor is – as any other ultralight airplane – not certified for aerobatics.
Roll angles of more than 60° are not permitted.
Flying under icing conditions are not permitted.
No flying under squally wind conditions or at high wind speeds of more than 20
km/h (=5,6 m/sec), or if rain comes up.
3.2 AIR SPEED
The given values are standing for the Indicated Air Speed (IAS), referring to the air
speed sensor located in the front section of the trike.
Max. allowed speed
73 km/h
Max. travel speed
70 km/h
Maneuver speed
65 km/h
Min. recommended approach speed
40 km/h
Minimum speed
35 km/h
The maximum allowed speed must not be exceeded.
Full brake use is only permitted until the maximum maneuver speed. If you are
faster don’t apply the brake too fast or completely.
4 ENGINE
Manufacturer
Hirth
Type
3503
Takeoff power
70 PS @ 6200 U-1
Constant power
65 PS @ 6000 U-1
Cylinder head temperature
max. 110°C
Propeller
HTC CCQW-3B-166,5-CGt
Blade angle
24° bei 75% (= 625mm radius)
WARNING
Don’t use the engine without propeller with more than idle speed. Otherwise the
engine might be destroyed due to too high rpm.
4.1 FUEL
The engine is operated with 2-stroke-mix 1:100. The engine maker recommends
unleaded 95 ROZ or more. For a short time AVGAS 100LL or MOGAS can be used
as well. Under very hot conditions the use of AVGAS is better as the risk of steam
bubbles is less.
The 2-stroke-oil should be a high-quality synthetic oil (at least API: TC res. Jaso FC
or ISO EGD).
As an alternative BlueMax-2stroke oil 1:100 may be used as well.
WARNING: Never use fuel without oil! Use fresh, clean and waterfree fuel.
4.2 ENGINE OPERATION:
Engine start procedure: Move the main switch to the upper „on“ position. Now the