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#31
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Geee, Let me think? Was Igor just a cartoon character in a kids movie?
Years ago............ Maybe the helicopter was invented by a PILOT!!! Cam "helicopterandy" wrote in message om... wrote in message ... The scorpion head is not the best design in the world. However, as far as the tilting, an R22 doesn't really tilt on a U-joint, but an optical illusion makes it look like that. The scorpion really does tilt. I have looked at the R22 head and this looks like a nice one. I am planning some kind of hybrid between the R22 and Bell using elastomeric bearings. There is no grease in an elastomeric bearing. This, of course, assumes that I don't find a cheap one on ebay. Dennis. Bob, This guy Dennis is obviously a clown trying to cause concern among real aircraft owners and pilots. His making reference to "a cheap one on eBay" is a dead giveaway. He's just looking for a response. Typical to these type of forums. Dennis, Go back to the remote control forum. Ha ha Sincerely, Andy |
#32
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Geee, Let me think? Was Igor just a cartoon character in a kids movie? Years ago............ Maybe the helicopter was invented by a PILOT!!! Cam I remember reading somewhere that Igor Sikorsky (who was the chief designer "and" test pilot of his aircraft) once stated that all aircraft designers should be required to test fly their own designs. It's unfair to expect someone else to take that risk. That way, the good ones learn and improve their designs and the bad ones automatically eliminate themselves from the process "before" they get the chance to put anyone elses life in danger. Sounded pretty good to me at the time! :-) Fly Safe, Steve R. |
#33
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Dennis,
Do you know that a two bladed rotor system HAS to tilt? Do you know why? I'll grade your answer. Bob V. |
#34
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Cheers Steve, I've read that somewhere myself, its a shame it dosen't
apply to life in general for some people... Cam. .. That way, the good ones learn and improve their designs and the bad ones automatically eliminate themselves from the process "before" they get the chance to put anyone elses life in danger. Sounded pretty good to me at the time! :-) Fly Safe, Steve R. |
#35
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"Bob" wrote in message .. .
Dennis, Do you know that a two bladed rotor system HAS to tilt? Do you know why? I'll grade your answer. Bob V. Bob, Don't bother trying to explain. |
#36
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Bob, I don't think you understood my explanation. Maybe I should have used the word "teeter" instead of "tilt". A standard helicopter hub, which includes most of them, only tilts or pivots on one axis. A scorpion hub teeters on two axis. What this means is that if you walk up to a bell or a robinson and disconnect the linkages from the swash plate to the hub and allow it to do its own thing, the r22 will only be able to tilt up and down in the direction of the blades. The scorpion can flop around in all directions including flopping to the side as well as in the direction of the blades. What I said was that the single axis helicopters create the illusion of floping on two axis because they continually rock as they go around in the circle. So if you look at a standard helicopter in flight from the front and the helicopter is moving to the side, the disk plane tilts to the side whereas the hub really doesn't. I hope this clears up the differences between a regular hub design and the scorpion. Dennis H. "Bob" wrote: Dennis, Do you know that a two bladed rotor system HAS to tilt? Do you know why? I'll grade your answer. Bob V. Dennis Hawkins n4mwd AT amsat DOT org (humans know what to do) "A RECESSION is when you know somebody who is out of work. A DEPRESSION is when YOU are out of work. A RECOVERY is when all the H-1B's are out of work." To find out what an H-1B is and how Congress is using them to put Americans out of work, visit the following web site and click on the "Exporting America" CNN news video: http://zazona.com/ShameH1B/MediaClips.htm |
#38
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Dennis , I don't think Andy would buy anything that didn't have lots of
'bright' paint and cost more than the neighbors one! wrote in message ... Andy, I have some serious concerns about you. First off, I fly real helicopters and not fake ones. The scorpion may not be an apache longbow, but it IS a real helicopter. As far as parts on ebay, I see them there all the time. I just passed up on a Bell hub for $500. That is what I call cheap. Every now and then you see good deals on ebay. Last week I saw a good helicopter headset for $10. You should go there sometime and look. A few months ago, I saw a flying, but timed out, R22 that didn't sell with a minimum bid of $25K. Oh, I forgot, you don't consider the R-22 to be a real helicopter either. Dennis H. (helicopterandy) wrote: Bob, This guy Dennis is obviously a clown trying to cause concern among real aircraft owners and pilots. His making reference to "a cheap one on eBay" is a dead giveaway. He's just looking for a response. Typical to these type of forums. Dennis, Go back to the remote control forum. Ha ha Sincerely, Andy |
#39
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#40
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Dennis...
$500? That is what I'd call cheap too. Particularly if the time remaining to overhaul is adequate, the service life remaining of life limited parts is adequate, the hub is accompanied by a complete and authentic historical record documenting all of the above, it is free of incidents or damage requiring re-certification, and therefore also has a servicable (Yellow) tag attached to it. That of course, would be signed off by an FAA certified and authorized indvidual or entity qualified to make such a servicability determination. By the way, I've got a couple of bridges for sale here in N.Y.C. Are you interested? Bob V. |
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