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corvairkr

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Posts posted by corvairkr

    On J230, the heat, and suitability of the Rotax 912ULS

    in Jabiru

    Posted

    3 hours ago, RFguy said:

    Hi Jason

    yeah, I know a couple of the 914 conversions, that's a super option but lots of money. They're all experimental cat.

     

    The 912ULS into a J230 all fits and the weight is in the right place, the prop is in the right place (no cowling change ! )  and the mount is only a 2D drawing hole adaptor plate. 

    So the CG etc , the thrust location etc is all unchanged so the stall, spin recovery will be essentially unchanged. That's the  non negotiable. I   am not sure if the presence of a CS prop would change the spin recovery character significantly. 


    With a CS prop, it would meet the book TO roll , and might do a bit better on landing roll. 

     

    Jabiru could sell 3x the airframes if they went along with it (they dont wish to be involved so I am  not seeking their blessing) .

    J230  is a super airframe . Fast, strong, roomy, quiet, safe.

     

    Again, it should be pointed out, that a 80HP engine  in the J170D with the identical wing and MTOW  passes muster for most applications. Of course the J230 performance is a sports car compared to a J170, and also J230s are "more often fully loaded".  A user with a 912ULS, would have to accept lower cruise airspeeds during high DA conditions.

     

    Sure the big bore kits fix that (114HP)  without a CS prop, but that's one further step away from a plug-in which I seek to meet.  If it can be a simple bolt on, then we have a goer. Once an additional step is in there, the taste for the change to be applied en masse is reduced  and the path to approval is more difficult

     

     

    The Jab in the link is a 912 conversion. 😊

     

    jason 

    Xair Tyres

    in Other Rec Aircraft

    Posted

    Hi All, does anyone know where I can get new tyres/tubes for my Xair locally? I have checked the web and it seems most of sites are online tyre suppliers getting their stock out of the USA. The original tyres are 4.80 / 4.00-8 (4 ply) D602 Barrow Deestones. Would prefer to get a slightly wider/aggressive tread than the stock Xair tyres to make them more effective in softer coditions. Any hel appreciated.

    Bill

    Bill, when I had my Xair I got my tyres from here Trailer Parts | Garbutt | NQ Wheels & Castor Supplies

    I tended to pick up a few goat heads so got the heavier tread. They worked very well.

    Jason

    Remembering my little mate

    in Aircraft Incidents and Accidents

    Posted

    Well today marks 5 years since some of us lost a great friend.

     

    Ross Millard (Maj) left us on this day in an unfortunate aviation accident helping out a friend.

     

    I miss him terribly even though I only met him once in person in his home town of Townsville.

     

    Many times over the phone we spoke forming a friendship before he left us.

     

    Wherever you are Maj, smooth skies and tailwinds buddy.

     

    4 years, Alf. Not a day I’ll forget in a hurry. 

     

     

    jason

     

     

    • Agree 2

    Rotax 912 cylinder temps

    in Engines and Props

    Posted

    G’day Brett,

     

    I’ll lay money on your problem being your ducting to your radiator not allowing enough airflow.

     

    i’ve recently had to mount my radiator vertically on the engine mount near the Firewall on my 601 HDS and had the same problem. I originally had a Plenum over the radiator fed  by various inlets but eventually  had to make a NACA duct feeding directly to the face of the radiator to allow effective ground cooling. 

     

    It now runs waaay to cool but that’s a simple fix with some Aluminium tape. 

     

    Jason 

     

    945DCA98-4635-49E8-BB3F-22AA3CE21D3F.thumb.jpeg.794e4f5578b8087a3f4fc9eff0717db0.jpeg E7EDE499-7A48-4BF0-8247-4D7B206071EC.thumb.png.bdcf767975573e5ae3488420d3b2f158.png 12FC702A-378E-49A7-8471-5A484DB7F316.thumb.jpeg.cd238c2d912e8de557f9719b0d324709.jpeg

     

     

    • Informative 1

    Stained Bottom

    in Aircraft General Discussion

    Posted

    Skippy, have you got a close up photo of the Staining ?

     

    If the Chemicals you have tried have had little effect, I would start doing test spots starting with a light Polish/Pad Combo gradually moving up to a heavy Compound and even Wet Sanding if required. Sometimes there just isn’t enough Paint to remove the defects and repainting is the only option.

     

    It would probably be easier and cheaper for you to get a GOOD local Detailer to have a look at it for you ( I may know someone in your area )

     

    For protection you can’t go past a good quality Professionally applied Ceramic Coating although there are consumer grade coatings available prep is key to a good result.

     

    Jason

     

     

    • Like 1

    AOPA and RAAus in Dispute over Slogan

    in Governing Bodies

    Posted

    I am completely against what RAAus have done in registering a trademark of words that have clearly been in use by another organisation, apparently for nearly eighty years.I think it's along the same lines as the underhanded yanks who effectively stole the Ugg brand by registering their trademark both here and in the USA - and the ensuing battle that reigned when the rightful owners tried to have the registration cancelled just shows that prior use doesn't guarantee anything at all. It's also similar to the greedy low-lifes who tried to register the Smiley symbol, Aussie, Aussie, Aussie and similar icons.

     

    However - I must have completely missed something here because I haven't seen where RAAus have asked that AOPA or any other bodies/entities should have to pay for the use of this trademark. Can someone point me to a reference please, because if they have done so it puts a completely different and much worse light on an already very messy situation.

    AOPA and RAAus in Dispute over Slogan - Australian Flying

     

    Jason

     

     

    • Like 1
    • Informative 1

    Mikuni Fuel Pumps

    in Drifter

    Posted

    Why not just deal direct with MikuniOz, They are they Australian distributor for Mikuni and are in Townsville. I used them for my last pump and they also do kits.Fuel Pulse Pumps | Mikunioz

    Why not just deal direct with MikuniOz, They are they Australian distributor for Mikuni and are in Townsville. I used them for my last pump and they also do kits.Fuel Pulse Pumps | Mikunioz

    judging by the sellers name in the link, I reckon he might be ;)

    Jason

     

     

    • Haha 2

    Are bubble canopies hot?

    in AUS/NZ General Discussion

    Posted

    I fly a 601 HDS with a tinted canopy and the Vans RV NACA ducts to eyeball vents for cockpit airflow up here in North Queensland.

     

    On the ground it can get pretty tropical but in the air we’ve had absolutely no problem.

     

    You can also buy retractable shade screens such as the Home which I’ve been meaning to get....more for shade while we’re parked at other airstrips.

     

    Jason

     

     

    • Like 1
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