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#21
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New winch height record
You would need to be able to get the gliders from the landing runway to the
launch point. Mike Schumann "2cernauta2" wrote in message ... On Sun, 25 Nov 2007 15:53:27 -0800, "BT" wrote: how many glider club or commercial operations have 10,000ft of "runway" available. granted.. for most 4000ft runways.. it could prove very beneficial BT Wouldn't it be possible to locate the winch outside the airfield's boundary, and launch with a longer rope on a 600m runway? Is this common practice at some glider sites? Aldo Cernezzi -- Posted via a free Usenet account from http://www.teranews.com |
#22
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Wouldn't it be possible to locate the winch outside the airfield's
boundary, and launch with a longer rope on a 600m runway? Is this common practice at some glider sites? We do. Mount Beauty Gliding Club. You will not believe the hassle it gives though. Everytime closing the gate to prevent cows entering the runway, chasing cattle of the cable before launching and cow**** around the winch. No joke. Very happy with the extra 1000 ft. |
#23
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New winch height record
Mike Schumann wrote:
Rent a 100' wide swath in the middle of a field. That might work OK when the wind is directly down the strip, but what about cross winds, especially with a new-chum driver or a cable break? -- martin@ | Martin Gregorie gregorie. | Essex, UK org | |
#24
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New winch height record
it could work to the south.. to launch to the south.. about 1/3 mile to the
power line.. to the north.. can't run the cable across the road great idea though BT "2cernauta2" wrote in message ... On Sun, 25 Nov 2007 15:53:27 -0800, "BT" wrote: how many glider club or commercial operations have 10,000ft of "runway" available. granted.. for most 4000ft runways.. it could prove very beneficial BT Wouldn't it be possible to locate the winch outside the airfield's boundary, and launch with a longer rope on a 600m runway? Is this common practice at some glider sites? Aldo Cernezzi |
#25
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New winch height record
OK, Rent a 200' wide strip and ask the farmer to plant soybeans or alfalfa.
Mike Schumann "Martin Gregorie" wrote in message ... Mike Schumann wrote: Rent a 100' wide swath in the middle of a field. That might work OK when the wind is directly down the strip, but what about cross winds, especially with a new-chum driver or a cable break? -- martin@ | Martin Gregorie gregorie. | Essex, UK org | -- Posted via a free Usenet account from http://www.teranews.com |
#26
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New winch height record
Ultra High Molecular Weight Polyethylene
UHMW is tougher than Teflon and almost as slick. Handy to have around as it makes a good anti-chafe tape. The tape, not the rope, like most good things in life, is available from McMaster-Carr on-line (g). bumper " wrote in message ... What is a Mel winch? What does UHMWPE mean? Thanks, Michael Bill Daniels wrote: From Europe: ________________________________________________ "On Sun, November 25, 2007 9:31 am, peternarinx wrote: Yesterday, on the airfield of Weelde ( EBWE) in Belgium, Peter Mink reached 1718m AGL with an ASK21 and a Mel winch." "The length of the runway is 3100m including the grass at both ends and the winch is on the ground. You can see the airfield on google earth 51 23 48 N , 04 37 77 E. They said that the conditions were not optimal yesterday......." _________________________________________________ 1718 meters is 5,636 feet AGL. The runway length is 3100 meters or 10,170 feet. With the new light weight UHMWPE winch rope and a modern high performance winch, great heights can be achieved. Bill Daniels |
#27
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New winch height record
Our experience of UHMWPE cable was that it 'floats'
much further downwind after a cable break, so is more likely to go across something! Del Copeland Lasham Gliding Society, UK At 15:30 26 November 2007, Bill Daniels wrote: I would speculate that Spectra or Dyneema is a lot more forgiving in this regard. It's possible that sites unsuitable for steel cable would be workable if Spectra or Dyneema is used. Steel cable is heavy and can damage anything it falls on. Because it forms kinks and weak points, is easier to break. It's electrically conductive so power lines are an extreme hazard. Spectra or Dyneema is so light that it 'floats down' more than falls so is unlikely to damage anything unless it is pulled across something under tension or the connecting hardware does the damage. It's also a very poor conductor. Bill Daniels |
#28
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New winch height record
On Nov 26, 10:37 am, "Bill Daniels" bildan@comcast-dot-net wrote:
It would be great to have both capabilities. ....and that would probably require two winches. Even though one could release at 1500ft when being launched by a 4000ft-capable winch, it would probably be pointless. But then, would it be possible to operate two winches safely? Bartek |
#29
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New winch height record
Bartek,
Most winches have more than one drum. In Europe, one winch can have up to 8 separate drums and lines. This enables a launch every 3 minutes or less. http://www.hydrostart.nl/EN/ Tom |
#30
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New winch height record
Most winches have more than one drum. In Europe, one winch can have up
to 8 separate drums and lines. This enables a launch every 3 minutes or less.http://www.hydrostart.nl/EN/ Oh, sure. But what if a club wanted to have one winch for high launches, located at the far end of a runway, and another one for circuit practice, located in the middle of the runway? Bartek |
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