 |
Shown here with dual carburetors, recoil starter and
C type
gearbox. |
Rotax 503 UL DCDI 50HP
- 2-stroke engine specially developed for recreational
aircraft
- 2 cylinders, cooled by fan
- Piston ported intake
- Dual capacitor discharge Ignition (DCDI)
- Dual Bing carburetors
- Mikuni pulse driven diaphragm fuel pump
- Recoil or electric starter
- Available with various exhaust system configurations
- Operates on automotive fuel with a minimum of 87 octane
rating (Canadian standards) and super 2-stroke oil of API-TC
classification, automatically provided by
oil injection, or
premixed with a 50:1 ratio
- Challenger owners, we
make the installation of oil injection possible!
- Time Between Overhauls (TBO): 300 hours
Performance
|
| Maximum power |
49.6HP / 37.0kW
@6500 RPM |
| Maximum torque |
41.3ft-lb / 56NM
@6000 RPM |
| Maximum RPM |
6800 RPM |
Combustion chambers
|
| Bore |
2.84" /
72.0mm |
| Stroke |
2.40" /
61.0mm |
| Displacement |
30.31cu.in. / 496.7cm³ |
| Compression ratio |
Theoretical:
10.8
Effective: 6.2 |
Weight
|
| Engine with carburetors |
73.2lbs / 33.2Kg |
| Exhaust system |
11.2lbs / 5.1Kg |
| Air filter |
1.1lbs / 0.5Kg |
| No gearbox, no electric starter |
85.5lbs / 38.8Kg |
B gearbox,
no electric starter |
95.4lbs / 43.3Kg |
B gearbox,
electric starter |
106.2lbs / 48.2Kg |
C gearbox,
no electric starter |
103.1lbs / 46.8Kg |
C gearbox,
electric starter |
113.9lbs / 51.7Kg |
| E gearbox |
110.2lbs / 50.0Kg |
Documentation
|
| Information sheet |
503info.pdf
/ 375Kb /
Adobe Acrobat format |
| Performance graphs |
503perf.pdf
/ 20Kb /
Adobe Acrobat format |
| Technical drawings |
503draw.pdf
/ 146Kb /
Adobe Acrobat format |
| Manuals |
Visit
www.rotax-aircraft-engines.com |
| Service documentation |
Visit
www.rotax-owner.com |
|
