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BirdDog

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Posts posted by BirdDog

  1. OK... So here's an update.

     

    Aircraft has been sitting for a little while now, and new leakdowns tested on a stone cold engine.  Results were 77/80 78/80 78/80 78/80

     

    Leakdowns don't lie.  

     

    So I am happy to continue on as normal.  The leakdowns, colour of the oil (still looks new), no oil use and colour of the plugs confirms that the motor is fine.

     

     

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  2. Some really interesting discussions lads, but I think we are getting away from the original question.

     

    More research is telling me this is all normal.  Remember, my engine is NOT tightening up - As in - more than normal.  It's the opposite - it gets loose cold.\

     

    I will keep you posted.  Was going to try and get to the bird on the weekend, but ran out of time.

     

     

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  3. So I have done  lot of research in the last few days, and I have come to the conclusion that what I am experiencing is most likely normal.  I will still do another leakdown test, but I am not much worried anymore.

     

    Firstly - Why would the procedure ask you to warm the engine to operating temps before doing the leakdown.  If there was no difference between hot and cold, why bother warming it up!  LOL!

     

    Secondly, heat will cause things to expand - it can't be any other way!

     

    Anyways... I will do the leakdown (hopefully in the next few days) just to be sure!

     

     

    • Like 1
  4. OK - Mail is arriving at the  new address.  The new address is a Me.com and the old is on G-Mail servers - so maybe there might be something you should look into for that!  By that I mean, maybe Google has something restricted from your IP or the like.

     

    Anyways... all good for me now.

     

    Cheers

     

    J

     

     

  5. If there is a mechanical problem causing stiffness you will feel a constant drag. If there is stiffness caused by good compression you will be able to feel a springiness in the turning force. By that I mean that compression will try to turn the prop in reverse, you  will be able to bounce it, but mechanical stiffness will be constant.

     

    Yep.  No drag!  Just the "lump" of compression feels less after sitting around.

     

     

  6. Thanks again lads.

     

    My LAME tells me I am all OK!  LOL! - But he is not the one with his arse in the seat in the sky!  LOL!

     

    I am a little of the.... if it ain't broke, don't fix it mentality.  Everything checks out OK.  But, for peace of mind, this weekend, I will go hit up another leak down test, and see what I get.

     

    I will report back the findings.

     

     

  7. Thanks Lads.

     

    20 hours ago was May this year.  She gets flown regularly. It's easy for me to do this again - no probs.

     

    Did it do it before???  Well, As I said in my post, I think am now more attuned to it, because I do my own maintenance, and am paying a lot more attention now.

     

    And yes, It is NOT stiff.  That's not the issue.  The issue is, after sitting for a few weeks without a flight, it becomes easier (read less stiff) than if it's warm.  Make sense?

     

     

  8. Hey all,

     

    So I have never really noticed this until I started doing my own maintenance, and one step is to measure how much force it takes to pull the prop through, and noticed recently that if the bird has sat for a month or so, the prop pulls through really easy.

     

    What I am saying is... when I turn up at the hangar and pull the prop through 5 or 6 times to burp the oil, she is really easy to pull through.  If I do the same thing after i go flying, she is a lot firmer.

     

    Is this normal?  My LAME seems to thing it's OK.

     

    She runs fine. Burns no oil, and is smooth.  She is a 912 ULS 2008 with about 350 hours on it.  All SBs up to date etc.

     

    Any advice would be appreciated.

     

    Cheers

     

    J

     

     

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