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  1. S

    Rotax Tenn Prop 60x44

    59 hrs since new, asking 250.00 plus shipping O.B.O.
  2. S

    VW Prop for sale

    I have a VW pusher prop from a gyro for sale, it is a 56 x 30, only had 25 hrs total time when I sent it to ST Croix for reconditioning. Had not been used since I got it back several years ago. You can see in the pictures it is in great shape, only asking $300 plus shipping O.B.O.
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    54" 3 blade new prop, ground adjustable

    I am selling a new prop, 3 blade ground adjustable, up to 130hp, ccw. Bought for gyro 2 seat project that never got started. Item listed on ebay but will sell to forum member for $400.00 plus shipping. see here...
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    Coaxial rotor question

    Thanks for the link, so from the information on the link, best for lower power is two side by side rotor systems and best stability is intermeshing, then coaxial?
  5. S

    Coaxial rotor question

    any reason why a coaxial rotor system with a servo flap main rotor blades has not been built?
  6. S

    Boeing-Vertol VR-7 questions, Chuck can you help?

    what is the autorotation pitch angle? what is the best lift angle? What is the stall angle? Thanks for the help
  7. S

    Looking for swashplate drawings

    thank you for the help
  8. S

    Looking for swashplate drawings

    Hey guys, does anyone have some swashplate drawings you would part with? Electronic or scanned is more than acceptable. I want to look at as many different designs as possible, doing the studying thing to try and learn more. Thanks
  9. S

    Tip Jets anyone?

    Any one here ever fly a tip jet helicopter or actually seen one that really flys besides the commercial ones from Hiller and such? I know they are fuel hogs and can not fly very long but I have seen alot of You Tube videos of people that got them to the stage of running the engines on propane...
  10. S

    Hiller Rotormatic Head?

    wow, that is alot going on in that head. The paddles are also in individual feathering bearing? looks like it since they run thru the center of the head and shaft. Wish I could find a parts breakdown to see all the parts. Thanks for the help
  11. S

    Hiller Rotormatic Head?

    so the only pitch change is just in the paddles, they inturn tilt the head on its pivot to change the angle of attack of the rotorblades as a unit? Does the rotor head have one pivot then or two? One along the blades longitudinal axis for cyclic pitch and one along the lateral axis for teeter?
  12. S

    Hiller Rotormatic Head?

    thanks for the explination and the picture Brett. But where and how are the paddles connected to the blades feathering axis?
  13. S

    Hiller Rotormatic Head?

    Does anyone have drawings or parts breakdown pictures of the Hiller Rotormatic head? I have tried to search it out in the internet but can not find out how it works mechanically. Thanks for the help
  14. S

    Hughes 500 rotorhead straps????

    Not really. I am looking for the actual s.s. that they used in those straps. that reference is from another paper by nasa
  15. S

    Hughes 500 rotorhead straps????

    anyone know what series stainless steel was used for the hughes/MD 500 used in its rotor head for the strap packs?
  16. S

    New Two blade head question

    OK, I see what you are getting at. So on the Kaman heads that use servo flaps for twist the blade to change its pitch, I also see lead/lag hinges and dampners.............Why would they be needed since the head teaters also and the blades are coupled thru the seesaw action? Unless it is to...
  17. S

    New Two blade head question

    Now I searched really good this time before I popped my question out for all to see. Hughes 500 and aerocopter both use tb or tt straps for flap and feathering, both are more than two blades. Is there any reason why a one piece strap pack can not be used to replace the teeter head for two...
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    Blade airfoil question for Chuck

    Sounds pretty good I built the bensen blades from the old plans a few years ago. Simple enough and flew ok, felt like velvet, somewhat smoother than my aluminum brock blades did. Now working on a ultralight helicopter, can not afford a mosquito and the AW94, skytwister and furia just are too...
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    Blade airfoil question for Chuck

    Thanks for all the info. Chuck how did you do the layups of fiberglass for your blade skins?
  20. S

    Blade airfoil question for Chuck

    OK, I had just the VR7 dat file, no tab on that one, thanks Chuck
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