Rotax air-cooled aircraft engine troubleshooting, Rotax 185, 277, 377, 503 troubleshooting reports Volume 2

Return To Ultralight News Main Index


In our last issue we looked at some of the common problems associated with Rotax engines when adapted to ultralight use.In this issue will go through problems associated with each group of engines in the Rotax family.

The engines we will be taking a look at are the:

Rotax 185 cc aircraft engine with Lazair ultralight engine mount
The Single Cylinder Air Cooled
  1. Rotax 185 c.c. engine
  2. Rotax 277 c.c. engine
The Rotax twin cylinder air cooled
  1. Rotax 377 cc engine
  2. Rotax 447 cc engine
  3. Rotax 503 cc Bosch Ignition engine
  4. Rotax 503 cc Ducati Ignition engine
Rotax Aircraft Engine Manuals
  1. Rotax 185 cc aircraft engine manual
  2. Rotax 377, 447 aircraft engine manual
  3. Rotax 532 aircraft enginemanual
  4. Rotax 582 aircraft engine manual
  5. REG's 185 aircraft engine tech tips and advisories

Rotax 503 ultralight aircraft engine crankshaft seal failure.

Now before going any further there is one thing that should be mentioned about the Rotax line of engines, and that is that they, unlike many of their competitors have a history, dating back many decades. The main overall advantage of this to engine owners is that data is available on just how long that engine can be expected to last, its weaknesses, and strengths.

First hand experience, over 35 years, on Bombardier snowmobiles engines and 17 years on ultralights engines of all types has shown me that the average RELIABLE life of a Rotax engine points equipped aircraft engine is approximately 150 hours, with the life of the new ducal CDI ignition engines being 300 hours, at which time if the engine is torn down, and new rings, crankshaft, wrist pin bearings, wrist pin clips, seals, gaskets, points, condensers, and spark plugs, and any other damaged or worn parts, are replaced with new, then the engine will run for another 150/300 hours with a reasonable rate of reliability.

This is not to say the engine is going to self destruct at 150 hours I know lots of engines that have gone on for many more hours, I also know of lots of over time engines that when they did blow up, seize up or whatever, ending up costing the owner considerably more to repair than if the engine had been rebuilt at 150/300 hours.

(Remember if the engine quits the possibility also exists that's damage can also be done to the aircraft in an emergency landing).

Aircraft Advisories.

Rotax 377, Rotax 447, Rotax 503, Rotax 582 advisories, Ivoprop advisory, GSC propeller advisory, 

© Ultralight News Web Magazine.  You may link to these pages or print them out for your own personal use. 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 the written permission of Ultralight News. By copying or paraphrasing the intellectual property on this site, youre automatically signing a binding contract and agreeing to be billed $10,000 payable immediately. Copyright Ultralight News. Email