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Downunder

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Posts posted by Downunder

  1. You really need to check current draw through the range of movement.

     

    Nev maybe correct that the limit is set wrong. I would expect a constant current draw throughout the movement range while engine is not running. If it runs out of "stroke" that will definately make motors fail.

     

    Skippy makes a very good point about cable connections and size.

     

    My aircraft mfg undersized my battery cable significantly for example. Now corrected to Rotax specs. 

     

    Is the motor labeled or have specs? Manufacturer or model number?

     

     

    • Like 2
  2. Could be a lubrication issue. Inadequate lubrication or wrong type? (Not sure exactly what requires lubrication on your system. Linkages, threads and/or bearings)

     

    Sounds like the motor is struggling to overcome the forces required to change pitch.

     

    You could probably test current draw of the motor to see if it is within spec.

     

     

  3. Could this possibly be true? Just out of interest, how many forum participants think they have flown over 70 hours since January?  I obviously haven't. See above

     

    Yeah, I probably have. 80 to 100 per year on average.

     

    However, how many hours I do is none of the RAA's business.?

     

     

    • Agree 1
  4. 7 years with Plexus and no problems every time before I fly.

     

    One cloth to initally wipe and another to finish.

     

    Don't use dirty cloth. The dirt will scratch.

     

    Ocassionally use Plastx which is a cream type cleaner if a thorough clean is required, especially with water marks. Used probably once a year.... 

     

    NOTE. NEVER CLEAN IN CIRCLES. UP/DOWN AND SIDE TO SIDE ONLY.

     

     

    • Like 1
  5. Plenty come with just the 2 airfilters on the carbs. 

     

    This means they are using hot internal air and won't make as much power as a cold air fed engine. Whether it is a realistically quantifiable difference is debatable. 

     

    Often just having the filters means you don't need a de ice carb heat system. 

     

     

    • Agree 3
  6. Is it based at Jandakot, Northam or somewhere else? Is it more or less tatty or does it look like a major job to get airborne again, or does it look beyind repair? 

     

    Sitting on a spare lot amongst hangars at Bunbury. Looks serviceable.

     

    Will try and chase up some info...

     

    Anyone with Ozrunways can see it on "camera view". (Might need landscape view)

     

    http://vh-jttvsaustralia.blogspot.com/

     

     

  7. Off on another tangent, but still relating to 912 carbs.

     

    I noticed my (metering) needle has movement of about 1mm in and out of it's housing.

     

    It has the o ring above the "E" clip. I would have thought the o ring should be snug against the clip and limit movement.

     

    The securing screw is tight and all looks fine and undamaged.

     

    Anyone else find or notice this?

     

     

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