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birdy birdy is offline

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Visitor Messages

Showing Visitor Messages 1 to 10 of 28
  1. birdy
    09-02-2016 07:19 PM
    birdy
    Yeh mate, but im not the bloke to ask for details, iv stepped sideways from gyros.
  2. rdo4evr
    08-31-2016 12:21 PM
    rdo4evr
    The wife and I are planning a trip to Australia possibly July/August 2017.
    Do the Aussies have a fly in similar to Mentone or Oshkosh?
    Love your spellin.
  3. Rick E
    04-13-2016 01:53 AM
    Rick E
    G,day mate,
    All good Birdy, I've spoken to a few of the crew and most seem to want to go around the other side of Alice Springs and fly over the big rock. There are two of the blokes that might come round your way and drop in for a cuppa as there heading back to central QLD, Bones is on a place a bit East of you and has offered a bit of help as well to get safely across the Simpson.
    We will all be staying at Ti Tree on the 6th of May if your interested in a night away from home and a few beers. Anyway thanks a lot for the offer of help, I'll let you know exactly what our movements are from Kununurra. Could you give me your email address to save going through the forum, mine is rick@aluglas.com.au
  4. Sindhi681
    06-07-2014 01:57 AM
    Sindhi681
    is a 70cc motorbike engine isnt capable to fly?
    Its speed is 70km/h
  5. msmfi
    08-18-2013 10:35 AM
    msmfi
    Happy Birthday Birdy!
  6. birdy
    11-02-2012 02:22 AM
    birdy
    too many long posts for me, i get a sor head tryn to read that. but i did skim, and im not sure theres anythn i could contribute.
  7. msmfi
    11-01-2012 03:28 PM
    msmfi
    Birdy,
    You should read this: http://www.rotaryforum.com/forum/sho...5&postcount=68
    Regards, Mirek
  8. Fl90
    10-20-2012 06:20 AM
    Fl90
    thank you Birdy.
  9. birdy
    10-15-2012 02:01 AM
    birdy
    The other sound is partial disc stall, caused from a cyclic input of too high a rate for the blade to keep up.
    The area of the disc being commanded to move the most in the cycle is where the partial stall will occure, and where the sound will come from.

    Mine happened through a very high rate emergency cyclic input, on heavy rotors with low rpm, and from memory, it came from between about 7 and 5 oclock, the area of disc that was commanded to move the most in a hard left.
    The only 'damage' i noticed, many months later, was 'bruised' cheek plates on one of the rotors.

    I wouldnt say you didnt experiance a stall, but id think it was more likely a serious wake slap.
    BUT, either way, its usualy more than one crack you hear. Wake slaps can last for several seconds with many cracks, and the stall i had had roughtly 4-5 cracking sounds.

    Chuck Beaty described the sound best as that of a boat paddle be'n slapped hard on to water, sideways.
  10. birdy
    10-15-2012 02:00 AM
    birdy
    Gday Phil,
    your testn me memory now, but its good coz its a sound iv only heard once, so i remember it pretty well.

    Theres 2 different sounds a rotor will make. The normal wop wop, which is simply each blade slapn the disturbed slip streem of the previouse blade. The intensity of this sound can be anythn from barely audible to crisp and deep noted, depending on blade profile, amount of rotor over speed and the degree of 'unloadedness'.

    The other sound is partial disc stall, caused from a cyclic input of too high a rate for the blade to keep up.
    The area of the disc being commanded to move the most in the cycle is where the partial stall will occure, and where the sound will come from.

About Me

  • About birdy
    Total Flight Time
    7000 odd, bout 5000 gyro
    Aircraft
    open frame single seat & a 'wasa' RAF, among other types.
    Biography
    Dun buggerall, achieved Nuthn and enjoyed every Minit of it.
    Real Name
    David Bird
    Location
    Alice Springs-central Oz.
    Ratings
    retarded ;)
    Occupation
    SCG,jack of all trades and master of none.
    Primary Airport
    Who needs an airport?
  • Signature
    Ignorance is bliss, but only till you realise you were.

    Your intolerance of my bigotry is offensive.

    VPR, the ultimate.

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  • Last Activity: Yesterday 08:33 PM
  • Join Date: 03-19-2004

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