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  1. grostek

    CriCri MC-15 in NZ

    Thanks for the info Kind regards, Gunter Rostek.
  2. grostek

    CriCri MC-15 in NZ

    Hi Shannon, Thankyou for taking the time to post your build progress here. I had a look at the flap selector mechanism yesterday and decided to jump right in and do a CAD drawing of it. then noticed that Mr. Columban recommends that a builder should wait with the positioning of the flap...
  3. grostek

    from Portugal

    Welcome rreis, Hope you enjoy your stay here. Ask as many questions as you like, there are many knowledable people here that will help. Kind regards, Gunter Rostek
  4. grostek

    Sonex and Sonerai comparison....

    I think its all about empty weight of an airframe and the power to weight ratio. A small two seater build of aluminium with folding or removable wings will be heavier than a non folding/non removable wings airframe .Lets say it has an an empty weight of 650lbs. Then power, a 2180 VW will...
  5. grostek

    "Normal" Static RPM's (New Pilots Read Before Flight!)

    Hi Colin, Thanks for the post, very good advice given. I have a few questions, 1 Can you maybe point me in the right direction for a thrust meter I can build myself. 2 Did you ever get the KR2 to perform as a two seater? Kind regards. Gunter Rostek.
  6. grostek

    VW 2332 Rear Drive build

  7. grostek

    PIREP: All Dutch Zodiac CH601 XL's grounded

    Hi Rhino, The 601 XL is not certified in Germany, I was saying that the checks should be done ,as they are done in certified aircraft, for the pilots own sense of well being. Or put another way pilots of 601XL,s should do checks on their aircraft that the certified crowd do to their...
  8. grostek

    PIREP: All Dutch Zodiac CH601 XL's grounded

    Hi All, The voice of reason has won through all the conjecture and speculation. It has been very sad to see how a fine designer's name has been dragged through the mud by speculation, to see how a fine companies products have been subjected to unfair critisism. It is refreshing to see the...
  9. grostek

    Foam-less molds

    Hi Duncan, I am new here so excuse me if my ideas are not upto scratch. How about a skin of aluminum bonded to the ribs, say 0.020 6061T6 . You would then also not get the "saddles" Just an idea. Kind regads, Gunter Rostek
  10. grostek

    airframe

    Hi Tim , How did you fill the holes? Kind regards, Gunter Rostek
  11. grostek

    Mustang II Completed

    Hi Herbrose, Congratulations on a real fine looking aircraft, Any updates on first flight and performance numbers? Kind regards, Gunter Rostek.
  12. grostek

    Hmmel Bird Complete at last!

    Hi Ace Plumber, As a newbie , I have just come across this thread. You have build a real classy piece of art there. Your taxying incident showed you some mods were neeeded to give you etter control. Just a thought, The Wittman Tailwind also a taildragger does not have a full swivel...
  13. grostek

    CH 650

    Hi fleetstreet, In my opinion read the whole thread about inflight breakups onthe Matronics List first. That will give you a general idea of what the real problem was. From what I read there was no problem with the original 601 breaking up in flight, only with the 601XL RE...
  14. grostek

    Which Wood for Plywood Ribs?

    Hi all, Things to consider when buying plywood. 1. Grade marine, interior, exterior,etc will it delaminate 2.Specs GLI, GLII 1088 etc is it strong enough 3 Weight Weight per square foot is it too heavy 4.Price...
  15. grostek

    First Ultralight Built in Afghanistan?

    Well done and keep going. Soon you will be surprised to find that you have a complete "Kit" Kind regards, Gunter
  16. grostek

    Newbie

  17. grostek

    Newbie

    Hi all, I am new here and hope to learn a lot here and maybe even contribute something. I am from SouthAfrica but living in Dubai at present. Kind regards, Gunter Rostek.
  18. grostek

    Volksplane anyone?

    Hi, I am new on this site, but have build a VP1 in South Africa. Before you start building, study the plans untill you know them and can viualise what Bud Evans was trying to get us to understand. I studied mine for 1month. The secret to finishing a homebuild aircraft is to do a little...
  19. grostek

    Fuel Flow Check

    Hi All, Fuel flow by gravity should be max engine fuel required in a climb at full power plus 50% safety factor. So if your engine needs 6 galls at full power the fuel lines should be capable of delivering 9 galls per hour. (6 + 50%) This ensures you will have more than enough fuel available...
  20. grostek

    Fuel Flow Check

    Hi, Ed, The fuel flow check is done to see how much fuel flows by gravity,should your mechanical and electrical fuel pumps fail. This is checked in a worst case attitude, and yhet would be on takeoff. So your check should be at climb attitude. I dont know what the climb angle of the sonerai...
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