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old man emu

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Posts posted by old man emu

    Low Fuel Precautionary Landing near Mount Isa

    in AUS/NZ General Discussion

    Posted

    Just getting away from the incident for a moment, but I think this comment could have been better thought out:

     

    "Recreational pilots are all trained in emergency landings because the engines on recreational planes are more prone to stoppage"

     

    I bet Jabiru and Rotax loove to hear that sort of comment from a leader of an organisation which uses their products.

     

    OME

     

     

    • Like 1

    What Has Old Man Emu Scratched up Now? No 4

    in Engines and Props

    Posted

    GG,

     

    1. No I am definately not Prof Avius, who is no scholar of the Classic Languages as "avius" is the Latin word for "remote; out of the way, unfrequented". Anyone with schoolboy Latin can see that the word is a combination of the pre-fix "a-" meaning 'from' and the noun "via" meaning "road".

     

    I am more your Prof Avuncular type. ("avuncular from the Latin 'avunculus' an uncle on your mother's side)

     

    2. Different Octane ratings.

     

    The purpose of this article is to get across the point that octane ratings of fuel have nothing to do with the power that can be obtained from the fuel. The article only dealt with the concept of octane rating, it did not go into how those ratings are determined experimentally. Since the two reference fuels (heptane and iso-octane) are the same worldwide, the results of a test of a particular sample of petrol would be the same both here and in the US.

     

    You may be thinking of two ways that octane ratings are reported: RON and MON. And then there is the Anti-knock Index. I didn't want to extend the article I was writing to deal with RON and MON and the stiochiometrically correct fuel/air mixture because long articles are not what I am trying to produce.

     

    I am going to to write further articles dealing with this subject and I hope they will answer your question satisfactorily.

     

    Old Man Emu

     

     

    • Like 2

    Need your advice

    in Site Announcements

    Posted

    Ian,

     

    I think that it would be wise to create a lot of sub-menus. This site seems to be getting slower and slower to load. It even takes quite some time for the login facility to become available.

     

    (I'm on ADSL2)

     

    ome

     

     

    Too fat for RA-Aus

    in AUS/NZ General Discussion

    Posted

    Jason,

     

    Congratulations. What method are you using? I just worked out that if I lost 1kg per week, I would be 85kg when I left for Oshkosh next year. Oh Lord, give me the motivations!

     

    And Jason, if you keep swapping kilos for 1.39 litres we will soon have to call you Jason LightWeiss.

     

    OME

     

     

    OSHKOSH 2012

    in Trips/Events/Seats

    Posted

    OK. Our basic plan is this.

     

    1. Confirm EAA membership

     

    2. Purchase ticket to attend for a week.

     

    3. Book camping site.

     

    4. Arrive at the city of Oshkosh and go to Walmart.

     

    5. Purchase tent, sleeping bag, blow up doll mattress.

     

    We will pick up a hire car at O'Hare International.

     

    OME

     

     

    OSHKOSH 2012

    in Trips/Events/Seats

    Posted

    Yes. Back to topic. Let's avoid discussing the idiosyncracies of our American cousins. The idea of this thread was to have a place to toss around ideas to help people plan for that great pilgrimmage. Now we know that we have to apply for a visa online. Let's keep an eye out for cheap airfares and accomodation.

     

    OME

     

     

    OSHKOSH 2012

    in Trips/Events/Seats

    Posted

    I think that applying for and getting a visa on line is a good thing, and worth the $14 they are asking. It is such a hassle to have to go to a Consulate to get a visa. The only problem is that I can't apply for it right now as you have to put in the details of teh flight you are arriving on, and I haven't booked the flight yet.

     

    I do agree that giving up the right to contest a decision at the airport is a bit of a principle to give up, but if they don't like my looks and want to send me home, then the US isn't the Land of the Free anymore.

     

     

    OSHKOSH 2012

    in Trips/Events/Seats

    Posted

    I've just been given approval by the Minister for Domestic Finance to go to Oshkosk next year!

     

    I'll be going with a few fellows from work and will be setting up camp on the airport. Time to get my visa and EAA membership up to date, and start looking for cheap airfares.

     

    Who else is going?

     

    Old Man Emu

     

     

    Aviation pop rivets

    in AUS/NZ General Discussion

    Posted

    CherryMax CR3213 Universal (domed) head 5056 Aluminiun sleeve, 8740 Steel stem

     

    CherryMax CR3212 Countersunk head 5056 Aluminiun sleeve, 8740 Steel stem

     

    CherryMax CR3223 Universal head 5056 Aluminium sleeve, 15-7PH Stainless Steel stem

     

    CherryMax CR3253 Countersunk head 5056 Aluminium sleeve, 15-7PH Stainless Steel stem

     

    You can also get Monel, plain and coated sleeves with 15-7PH stems, and Inconel sleeve and stem CherryMaz rivets, but these are rare and really hard to pull.

     

    Can't help you with Avex rivets. If we need to rivet, it's solids first, then CherryMax.

     

    OME

     

     

    Old Man Emu thinks about building his own

    in Aircraft Building and Design Discussion

    Posted

    Strewth! 3-1/2 months since I wrote anything here. What's been going on?

     

    I finally got up the nerve to attack my good CAD program, Rhino. After a few hours of messing about, I started to get the gist of it, so I went back to Square 1 with the wing rib. This time I also went back to basics and just place points on the worksheet for every station point given on the rib drawings. Then I joined them all up and got the outline of the rib. After that it was easy to place the spar holes and lightening holes. I'm satisfied with what I've got there. The next step is to do the drawings for the fuselage trusses. This will give me the lengths and angles for the tubing. After that I have to decide how they will be manufactured.

     

    There are tow ways to prepare the tubing for assembly. The first is the old "hands on" method where I measure and cut the tubes and then grind and file the bird mouths to fit everything together. This of course will take a long time and will result in a degree of material wasteage.

     

    The second method is to send the drawings away to a CNC company and have them do all the cutting and shaping (as well as supplying the materials). Then they just ship the pieces to me and I arrange for everything to be welded up. There's a fellow I know who has just got his fuselage tubing for a Breezy from this mob: www.cartesiantube.com

     

    They are a Canadian company. I've been given an estimate of between $3000 and $6000 for the supply, and cutting. And then there's the freight cost.

     

    I'm wondering if there is an Australian company that could do it cheaper overall.

     

    Old Man Emu

     

     

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