447 Rotax, Rotax 447 engine specifications and technical data:

Ultralight Aircraft Information.
.....

Hear what our customers have to say!

Rotax 447 engine data.

Rotax Engine Rebuilding Videos
Rotax engine rebuilding videos, each video is approximately 2 hours in length and takes you step by step through the tear down, clearing, and reassembly of a Rotax engine
Click here for more information!

Rotax 447 engine specifications.

DESCRIPTION:

Two-cycle, two-cylinder engine, oil in fuel lubrication

BORE:

67.5 mm (2.657 in.)

STROKE:

61 mm (2.40 in.)

DISPLACEMENT:

436.5 cc (26.635 cu. in.)

COMPRESSION RATIO:

Theoretical 9.6, effective 6.3

POWER OUTPUT:

29.5 kw (40 HP) at 6000 rpm

TORQUE MAX.:

44.0 NM (32.5 ft. lbs.) at 6000 rpm

MAXIMUM RPM:

7000 RPM

DIRECTION OF ROTATION:

Counter-clockwise, viewed towards PTO

CYLINDER:

2 light alloy cylinders w/ cast iron sleeves

PISTON:

Aluminum cast piston with 2 rings

PISTON/CYLINDER CLEARANCE:

0.08- 0.09mm (.00315-.00354 in.)

IGNITION SYSTEM:

Breakerless Ducati capacitor discharge ignition with magneto generator.

GENERATOR OUTPUT:

AC 12V 110W + 30W

RECTIFIER-REGULATOR:
(optional)

a.) #9103 requires minimum load 12 W (1 amp.)

b.) #9251 requires no minimum load

IGNITION TIMING:

2.09 mm = .086" BTDC

CONTACT POINT GAP:

0.4 mm = .015"

SPARK PLUG:

12mm NGK B8ES

ELECTRODE GAP:

.015" GAP

CARBURETOR:

1 X BING 36mm, with hand lever choke

FUEL PUMP:

pneumatic fuel pump #6903

FUEL:

Regular gasoline, octane not below 90 unleaded

LUBRICATION OF ENGINE:

Super two stroke oil (AV-2)

MIXING RATIO:

50 TO 1 (2%)

STARTER:

Rewind starter
optional: electric mag side without recoil option

REDUCTION GEARBOX "B":

Reduction gear-box with Torsional shock absorber

RATIOS: 2.00 to 1, 2.238 to 1, 2.58 to 1

DIRECTION OF PROP ROTATION:

Clockwise, viewed toward prop flange

COOLING:

Air cooled by axial fan

WEIGHTS:

Engine without carburetor, intake silencer, fuel pump

Exhaust System......................

Carb With Rubber Socket......... 2.0 lbs.......( 0.9 kg.)

Exhaust System (approx.)......... 10.8 lbs.......( 4.9 kg.)

Electric Start Kit (Optional)..... 7.70 lbs.......( 3.5 kg.)

Reduction Box "B" - Dry.............9.9 lbs.......(4.5 kg.)

Make yourself visible to others when your flying...... Strobe lights make you visible! Click here for more information!

Ultralight Aircraft News Web Magazine .-.-.-. . No part of this publication may be copied or distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language, in any form or by any means, electronic, mechanical, manual, or otherwise, without written permission . By copying or paraphrasing the intellectual property on this site, you're automatically signing a binding contract and agreeing to be billed $10,000 payable immediately. Copyright Ultralight News - Ultralight Flyer. ulnews@ultralightnews.com.