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  1. T

    New rotorcraft concepts

    If you haven't already, take a moment or two an seach the Internet for the work done by Zimmerman. He's a Canadian who worked for NACA (before it became NASA) and some of his work could best be described as astonishing; "The Flying Flapjack" is but one of his ideas and the concept of of a flying...
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    "Prop Kopter" plan set

    You guessed it . . . still looking! :-) tyc
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    "Prop Kopter" plan set

    Yup ... still looking. tyc
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    Homemade rotor

    The proposed static testing as described, with a cam operated collective has and continues to work very well in the helicopter industry. As described the process is one which has been going on for decades, with a fair amount of predictable performance success. tyc
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    Homemade rotor

    While I agree with you in that it would be "suicide to take off in an unproven rotor." as I know and understand these things, Mr. Hillberg is correct, One needed make a "mock-up" of an entire aircraft, just the rotor system will do. Enclosed in a staked out area, one enclosed with chain link...
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    "Prop Kopter" plan set

    Still looking ... tyc
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    Homemade rotor

    For those of you who might be interested in making your own wooden rotors might want to have a look at the photos shown on Tulsa Rotor Blades. There some excellent examples, photographs of, what I know as "shade tree" repairs and sundry other abuses to which such blades were subjected. If...
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    Homemade rotor

    As I am preparing to go a similar route, to say the least that's Very Interesting Reading. A couple of questions if I may? .1. Did you backfill those screw holes? And if so, with what? .2. Have you given consideration to testing those blades to destruction and if so, how do you plant to go...
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    glass roving

    While oriented toward marine applications there is a web site by one BRUCE ROBERTS and he offers what I view as a supurb basic introduction to fiberglassing. For what it may be worth to you, I highly recommend it. tyc
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    Homemade rotor

    Carving a rotor out of a single piece of lumber is NOT the way to go about it. Even today there are helicopters flying with wooden rotors and these are made of laminated strips of various hardwoods and softwoods. If you are interested in such things it would be best that you have skills with...
  11. T

    glass uni over wood core

    Looks like we may be going the same route . . . Have you considered mahogany, birch and balsa as core materials? tyc
  12. T

    belt redrive for rotax?

    "Tight enough were it doesn't slip at all, in most cases" I have to ask, when would you want the belt to slip? By the way, thank you for the time spent on the reply - it's appreciated. tyc
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    Round engines

    Outstanding! :-) tyc
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    belt redrive for rotax?

    Where can I get further information re. properly tensioning belt drives? tyc
  15. T

    belt redrive for rotax?

    That is a very interesting little fixed wing! Thanks for the tip. tyc
  16. T

    Decimal or fractional

    As a North American (Yankee) who has over the years shifted to the metric system, I fully concur. We inherited the fractional system as I understand it from the Brittish and even they've recently converted to the metric system - except for their beer pints - CAUTION - one should not mess with a...
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    Molding a canopy.

    You might want to consult with your acrylic sheet supplier with regard to how to form it. Sunlamps work well in this regard. Note to, acrylic is usually carried in stock up to 4" thick; this bit of knowlege may come in handy should you elect to engage as well in making viewing ports fo PVHOs...
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    New rotorcraft concepts

    To me, it's always seemed that rotor winged aircraft and high forward air speed, it just doesn't seem right, sort of like chocolate ice cream and peanut butter but then such things are best left up to the individual. It is not likely that the student helicopter pilot of today is anymore...
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    Rotor Blade Mfg/Suppliers

    Thanks for the reply. it's very much appreciated. tyc
  20. T

    Rotor Blade Mfg/Suppliers

    Have any of you a list of metal rotorcraft blade manufacturers, aside from the well known Bell, Hughes, etc.? tyc
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