Aviagamma JsCo.



Illustrated parts catalog
Illustrated
parts catalog

for 2-stroke ROTAX Engines
(PDF)


   www.aviagamma.ru > English version > ROTAX Aircraft Engines > ROTAX 503

 
ROTAX 503 (discontinued product)

ROTAX 503

  • 2-stroke engine specially developed for recreational aircraft
  • 2 cylinders, cooled by fan
  • Piston ported intake
  • Dual capacitor discharge Ignition (DCDI)
  • Dual Bing carburetors
  • Diaphragm fuel pump
  • Recoil or electric starter
  • Available with various exhaust system configurations

ROTAX 503 UL DCDI has two versions:
503/37 (another designation – 503 UL-2V) – with two carburetors,
503/34 (another designation – 503 UL-1V) – with a single carburetor.

TBO — 300 hrs.

Warranty service life — 100 operating hours or 6 months after the first run, or 1 year from the date of purchase.

* Picture: 503 with options.

Engine data / Perfomance
BORE: 72 mm
STROKE: 61 mm
DISPLACEMENT: 496.7 cm3
PERFORMANCE: ROTAX 503/37: 37 KW (49,6 hp) at 6500 1/min
ROTAX 503/34: 34 KW (45,6 hp) at 6500 1/min
MAX RPM: 6800 1/min

WEIGHT

engine: ROTAX 503/37: 38.1 kg,
ROTAX 503/34: 37.2 kg
including:  
carburator (2 carburators) 0.9 ( 1.8) kg
exhaust system 4.9 kg
Rewind starter 1.5 kg
Options:  
propeller speed reduction unit “B“ 4.5 kg
propeller speed reduction unit “C“ 8.0 kg
propeller speed reduction unit “E“ 11.2 kg
Electric starter 3.5 kg

Engine perfomance

Engine torque

Fuel consumption

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