DG Flugzeugbau GmbH
Flight manual DG-500M
7.11. Powerplant
7.11.1 Engine Rotax 535 C
Manufacturer: Bombardier Rotax at Gunskirchen, Austria
Type: Watercooled 521 ccm 2-cylinder twostroke
engine with electronic dual ignition and rotary valve
intake control, air intake silencer.
Take off power: 60 PS (44 KW) (max. for 5 min.) at 7200 RPM
Reduction: 3 : 1 by toothed belt
Electronically controled fuel injection for starting instead of a choke
butterfly valve.
7.11.2 Propeller
MT 158 R 125 - 1 A
Manufacturer: mt-propeller at Straubing FRG
Type: Wooden propeller
7.11.3 Extension - retraction mechnism
Electric spindle drive with ball screw shaft. The opening and closing of
the engine bay doors is automatic.
7.11.4 Automatic propeller brake and aligning of the propeller (Option)
Description see sect. 7.3 item 32
7.12 Fuel system
7.12.1 Fuselage tank 39 l (10.3 U.S.gal.) (useable amount of fuel)
Two fuel level probes are installed in the tank to allow an indication
which is almost independent from the pitch angle.
7.12.2 Fuel pumps
a) electric fuel pump, controlled via the ignition switch, installed in the
fuselage floor.
b) mechanical diaphragm fuel pump driven by the vacuum impulses
from the crankcase.
7.12.3 Wing fuel bags (Option)
Bags with 20 l (5.3 U.S. gal.) capacity each.
Issued: April 1997 7.15
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