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Vev

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Posts posted by Vev

    Zaon MRX traffic alert

    in Engines and Props

    Posted

    Completely agree Brian

     

    I fitted an MRX in my Jab 14 months ago ... had a small problem with the plug in power and sent it back. The Zaon guys gave it an upgrade free of charge and sent it back from the US in under 2 weeks... great service.

     

    Fantastic unit .. it doesn't replace your eyes to look and avoid but it does help fill in some of the gaps on the ones you miss if they have a transponder turned on.

     

    Cheers

     

    Jack

     

     

    Jabiru Engine 2200 Mechanical Problem Reporting

    in Engines and Props

    Posted

    Has anyone heard about the 'major' changes made to latest build 2200 engines? One delivered to a customer here in Bathurst last week looks quite different to any we have seen before: For instance oil feed lines to top of heads are not there any more - and he has been told all oil feed is now internal in the heads....

    The new engine feeds the oil up through the push rods and then through the rocker arm to the rocker shafts and valve stem.

     

    Cheers

     

    Jack

     

     

    Oil leak around head

    in Jabiru

    Posted

    Found the problem ... it is the rocker box breather vent hole.

     

    It is misting a very small amount of oil out through the vent... oil when runs down through the water drain hole which goes though the head ... this allows the oil to make it's way to the bottom head bolt.

     

    I spoke with the guys from Jab at Temora who confirmed the source of the oil.

     

    All good and no issue ....

     

    Cheers

     

    Jack

     

     

    Jabiru pre-flight

    in Jabiru

    Posted

    Keith,

     

    Check the pedals and make sure they are free.... there was also an AD on the rudder pedals.... see jab site for details

     

    Quote from Jab;

     

    "When adjusted to the most rearward position (i.e. that suitable for shorter pilots) and pressed to



     

     

     

     

     



    full rudder deflection, the pilot can experience a situation equivalent to rudder pedal overcentering

     

     

     

     

     



    and locking. For example, when the pilot uses full left rudder to turn the aircraft at the

     

     

     

     

     



    end of the runway, then presses the right rudder pedal to straighten onto the runway heading it

     

     

     

     

     



    can feel as though the control has locked. This effect can be exaggerated by the pilot’s shoes –

     

     

     

     

     



    thick, heavy soled shoes with deep tread tend to snag on the pedal more than thin-soled

     

     

     

     

     



    runners.

     

     

     

     

     



    RA-Aus Airworthiness Notice AN161008-1-1 also refers. This Jabiru Bulletin has been

     

     

     

     

     

    prepared to provide additional information to owners and supersedes the RA-Aus Notice".

     

     

    Cheers

     

    jack

     

     

    Oil leak around head

    in Jabiru

    Posted

    I've just completed a 50hr maintenance programme on my Jab 160.

     

    I noticed a very small amount of burnt oil around the bottom head bolt cap, not sure where this oil has come from ... any thoughts out there?

     

    By the way, leak down and comp test are all good, which I'm thinking it suggest there is no head leak... The engine is running fine and no noticable loss on power.

     

    Cheers

     

    Jack

     

     

    • Caution 1

    Natfly news

    in AUS/NZ General Discussion

    Posted

    Hi Cazza,

     

    Thanks for the feedback on my earlier post about food availability.... sounds more than enough catering.

     

    I was just wonder how the event agenda is looking in terms of lectures/activities for dates and times? ... I saw draft I think you (?) posted some time ago.

     

    Cheers

     

    Jack

     

     

    Jabiru Engine 2200 Mechanical Problem Reporting

    in Engines and Props

    Posted

    Just after reading the Jan Jab Chat (on line now) about their star rating on fuels, it makes one wonder if one should be using a blend of Mogas 98 and LL Avgas. The LL Avags to keep the octane up and the mogas additives system to clean up the depositions ... combined both would stop posible detonation form low octane and incandescent ignition sources at the same time.

     

    Cheers

     

    Jack

     

     

    Jabiru Engine 2200 Mechanical Problem Reporting

    in Engines and Props

    Posted

    If ever I find a loose head bolt its always the bottom one (as per Big Pete's post) ... to access it you need to remove the rocker cover and then the grub screw, which requires a long allan key socket to reach the bolt head.

     

    I also agree with Nev's comments, you do need to ensure you use some anti-sieze or crack back and then torque.... the engine needs to be cold too. The guys at jab have told me over the phone to tension to 24 ftlbs which is higher then the manual, which is what I do every 50hrs.

     

    Just one issue for me out of the report is the leaking head causing detonation ... whilst this possible it does sound a little out of the ordinary? Does anyone have a real experiance with detonation via a head/cyclinder leak? What do you think Nev?

     

    Cheers

     

    Jack

     

     

    Oil thermostat

    in Jabiru

    Posted

    Hi Bill,

     

    Not sure I would want to keep oil temp over 100 deg C an the Jab engine ... personally I would prefer to see it no more than 100 and not above.

     

    Cheers

     

    Jack

     

     

    Natfly news

    in AUS/NZ General Discussion

    Posted

    Hi Carol,

     

    Sounds great ... looking fwd to this event.

     

    Whats the situation regarding food if I camp on the field... I'm trying to keep my weight down, in the Jab that is ... I'm another story, but we wont go there :-)

     

    Cheers

     

    Jack

     

     

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