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Downunder

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Posts posted by Downunder

  1. Wow, Fallowdeer, that Savannah VG has a MTOW of ? about 550 kg. You were almost certainly lighter in the picture. The tyres have not deflected much at all.

    Without anyone in it and an unknown quantity of fuel, it would be 300 and something kilo's sitting there probably.

     

    As "force= pressure x area" you probably don't need the psi (pressure) in larger diameter tyres to some degree due to the larger internal tyre area. And as air is compressable, you get the spongy cushion on landing.

     

     

  2. One important factor is how many "ply" the tyre is and resistance to puncture.

     

    The "turf glide" 8.00x6 on the foxbat is a soft 4 ply tyre with not much "meat" on the tread.

     

    Foxbat max pressure 23 psi (tyre states 20 psi)

     

    The 4 ply gives softer cushioning and thinner rubber thickness makes it deform easier, thereby making it softer again. Making a larger footprint.

     

    A few owners have changed them over to more conventional tyres because of punctures. Even at mtow (not really that heavy)and 6.00x6 tyres, at the landing speed of a foxbat few seem to have and issues on rough ground. Maybe with sand you might want the larger footprint of the 8.00.

     

    A number of tyre mfgs make the same tyres in different ply, generally 4 and 6 ply but up to 12.

     

     

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  3. One of the reasons for choosing an L2 over a LAME is that they may have more Rotax experience.

     

    So many LAME's rarely run into a Rotax.

     

    Floods hold training courses. 3 or 4 levels I think. You may want to ask their Rotax experience..

     

    Rotax-owner is a good site to join. You pay but it keeps out the riff raff... lol.

     

    Lots of tutorial videos and you are automatically sent service bulletins.

     

    The forum there has people like Roger Lee and Rob Seaton. They have forgotten more about Rotax engines than most people know....

     

     

    • Agree 1
    • Informative 1
  4. Now, that's interesting because the person I knew found the structure around the top of the cockpit in the Foxbat was too close to his noggin. Each plane presented a different problem for one being very tall.

    I guess he is tall in the torso rather than the legs.

     

    I'm 6'3" and have plenty of room at head height but it's a bit tight on the legs. (Right leg under the panel)

     

    It's surprising the difference a pair of shoes with a thin soul makes. Most of the "runners" made these days seem to have massive souls under the heal and this is enough to jam my knee.

     

    The foxbat has very little adjustment, about an inch on the seat bottom which is basically nothing.

     

    Small pilots (my wife) would find it impossible.

     

    Foxbat's now have an option of a cut-out for the legs under the panel for long leg pilots.....

     

     

  5. I don't have a problem with training and endorsements (I have done that with my PPL). I do have a problem with requiring RAA pilots needing a PPL. I don't understand why there is the need for an extreme medical for recreational PPLs. What I am looking for is the same rights without the stupidity (nor the snide comments from the GA fraternity about RAA ill-discipline when a lot of GA have neither discipline nor manners)

    The problem is GA pilots (ppl) losing their medical, joining RAA and lobbying for the same rights their PPL gave them, without the medical.

     

    I personally, as an RAA pilot, see no need for the RAA to get involved with cta access. One serious accident involving a few hundred people in an airliner and an RAA aircraft wanting to be a bug on it's windscreen doesn't fair well for our reputation and I don't see see the RAA as an organisation that should be heading this way. Just because we "can" does't mean we "should". It is not what the RAA is about!

     

    The RAA managment made a song and dance over not continuing to issue ASIC's due to the risk analysis and onerous conditions involving instructors approving them, yet want to send 80 year old RAA pilots (with failed GA medicals) into airports mixing it with tripple sevens...WTF?...... I CAN SEE THE HEADLINES NOW.....

     

    As far as the GFA is concerned, number one, I'm not a member of that organisation so I really don't care. (They can have the headlines)

     

    Two, I've watched them operate and they work as a slick, well organised team with a disiplined structure. Really nothing like RAA random and individual pilots.

     

    It all sounds like schoolboy antics, "He's got some bubblegum, why can't I have some too..."

     

    I'm all FOR the weight increase (700 kg or so) as I don't see much more risk in where we fly and how we fly now..

     

     

    • Agree 5
  6. Ok, Had my pipes on a 912 ceramic coated then wrapped for a few years now.

     

    I'm on my second "set" of wrapping which is just starting to fail. The heat of aircraft exhausts seems to be well above auto/Mcycle temps.

     

    So I'm on the hunt for wrapping that will take up to 850C.

     

    As Rotax's have lots of rubber hose, I think wrapping is great for keeping the heat off them and reducing under cowl temps in general.

     

     

  7. Full flap would increase lift (likely more than drag) and reduce brake effectiveness? I'd go for no flap, brakes and back elevator below flying speed to increase drag. Happy to be corrected.rgmwa

    "Up" elevator would be countered by the brakes pulling the nose down?

     

     

  8. The flight from Murray Bridge to Mt Gambier that morning doesn't paint a nice picture either. From FR24, the last 25 minutes were all below 900', dropping down to 600' at times before doing somewhat of a circling approach (3 full orbits) at 200'. After that, airborne again 15 minutes later...

    After all that..... he still took off....

     

    The mind boggles...

     

     

    • Agree 2
  9. Your comment about dropped rivets causes me to consider adding a small percentage for wastage. I suppose the ability to provide replacement of builder buggered bits will be a measure of after sales service.OME

    What about a few extras (rivets & sheet) for the builder to trial fitting them together. Damaging some scrap getting the technique right is far better than the real thing...... (have to remember builders may not have extensive metal working experience)

     

    I'm all for individual sub-assemblies.

     

    The problem with pulling bolts from a bulk container is that if you fit the wrong bolt, further down the track you are going to find yourself short in size, length or diameter.

     

    Then you have to workout WHERE the errant bolt was fitted, do you need to remove/replace it, and what are you going to do about the one you need now.....

     

     

    • Agree 3
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