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#1
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LIppmann reports a 950 meter winch launch with their Dynatec winch line - anything higher?
Lippmann in Germany reports a winch launch to 950 meters (3100').
http://www.lippmann.de/hoistline.htm Has anyone heard of a higher launch? Bill Daniels |
#2
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The video does not show the speed and wind conditions... but it seems to
be a long launch time (1-1/2 minutes) I would love to know all the conditions. In a good headwind with a 5000 ft of wire, we have launched our K8's routinely above 2000' and I faintly remember one launch being sited as near 3000'. Larry Bogan Bluenose Soaring Club Nova Scotia Bill Daniels wrote: Lippmann in Germany reports a winch launch to 950 meters (3100'). http://www.lippmann.de/hoistline.htm Has anyone heard of a higher launch? Bill Daniels |
#3
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My information, obtained indirectly through two languages, is that it was
near zero wind. The initial rope length was 2Km so they achieved slightly less than 50% of that which sounds reasonable to me. 90 seconds on the wire is a loooong winch launch. Bill Daniels "Larry Bogan" wrote in message ... The video does not show the speed and wind conditions... but it seems to be a long launch time (1-1/2 minutes) I would love to know all the conditions. In a good headwind with a 5000 ft of wire, we have launched our K8's routinely above 2000' and I faintly remember one launch being sited as near 3000'. Larry Bogan Bluenose Soaring Club Nova Scotia Bill Daniels wrote: Lippmann in Germany reports a winch launch to 950 meters (3100'). http://www.lippmann.de/hoistline.htm Has anyone heard of a higher launch? Bill Daniels |
#4
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I'd like to find out more about this record -- they claim to be acheiving
about 50% line length release altitude in almost a dead calm 1 m/s (2.5 Kt). Our 5000 ft (1500 m) Spectra line weighs only 66 lb (30 kg) and we release at about 1700 ft. (520 m), not all that much better than the steel line we used to use -- this "Hoistline" must have something going for it besides light weight! Bob Johnson Dynatec Hoistline is the new winds start rope out of plastic. It is in many areas superior to the conventional wire. Not only in the point Betriebssicherheit, that separate increase lets itself also in the start height according to rope length until 30%. On this side, you find the current News to the Dynatec oistline. -------------------------------------------------------------------------------- .. Start with a 2,000 m Hoistline! Result: would relax 950 ms! Here a video of the start! -------------------------------------------------------------------------------- .. Current News: An interview with the 1st chairperson of the AEC Landau, Mr. Thilo Ott. The society has used the Hoistline already for almost 3 years successfully: interview pdf Hoistline long start with a 2,000 m! More than 3,000 starts with the first Dynatec Hoitsline in Landau! New! Now also F-train lines of Hoistline! German heights record with Dynatec Hoistline! The AEC Landau reached 8 incredible 900 ms in the winds start with a Ka! Further records should follow! Dynatec Hoistline collaborates perfectly with the new electro start winds: The first tests of the new Dynatec Hoistline on the also new electro winds of the firm Ulbrich- industry electronics especially positively passed. They show, functions that just these new winds especially well with the Dynatec Hoistline. It gives more information under www.startwinde.de and on the Aero in hall 1 state 109. Further successful initial use: A m Saturday (15.03.2003) around 10.40 clock we made the first start in Rostock Purkshof at the plastic rope. The conditions were not optimal, easy back wind (1m/s) and only 1250 ms rope length. As an airplane, we had occupied a Bocian doppelsitzig (full mass). Train height nevertheless 510 ms!! Further 13 starts were made and all with about the same results. We had a Sollbruchstellen tear (incorrectly stuck) and a Seilrißimitation; both without problems. The Seilhändling, is reported has like your it; extremely easily. The skeptics here in the society are upset for Saturday also. Now it arrives only on the durability. René Rietz The well known Eggerwinde successfully with the Dynatec Hoistline tested: The well known wind manufacturer Egger tested its current wind already that with new winds start rope Dynatec Hoistline. The attempts passed according to manufacturer very positively. Also the manufacturer developed first a special cap device for the Hoistline. This is also individually available. Further information under www.eggerwinde.de. D o w n l o a d s: Reconstruction instructions for the winds of the AEC-Landau. Teil 1 , Teil 2 Test report plastic start rope (ca. 2MB) in that "magazine sail fly", author Tino -- ---------------------------------------------------- This mailbox protected from junk email by MailFrontier Desktop from MailFrontier, Inc. http://info.mailfrontier.com "Bill Daniels" wrote in message news:Y2qwd.770486$8_6.538044@attbi_s04... Lippmann in Germany reports a winch launch to 950 meters (3100'). http://www.lippmann.de/hoistline.htm Has anyone heard of a higher launch? Bill Daniels |
#5
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Bill Daniels wrote: Lippmann in Germany reports a winch launch to 950 meters (3100'). http://www.lippmann.de/hoistline.htm Has anyone heard of a higher launch? Bill Daniels No but I did get a 2-22 to a solid 2000agl on an auto tow launch, with fixed and moving pully on a 5000 foot runway, once,at sunset. It was truly a special moment. MM |
#6
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At our site in the UK we are restricted to a max 300ft winch launch. However I
have seen this achieved several times. Well over 3000 ft is achievable if you use the kiting technique, ie let cable out slowly when the glider is at the top of the launch but still attached, then wind in to kite up to a higher level. This can be repeated until you run out of cable. It is only achievable with a substantial headwind. |
#7
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On Thu, 16 Dec 2004 19:49:58 -0600, "Bob Johnson"
wrote: I'd like to find out more about this record -- they claim to be acheiving about 50% line length release altitude in almost a dead calm 1 m/s (2.5 Kt). Well... I've seen all these launches... and there was always lot of headwind, usually at least 20 kts. Our 5000 ft (1500 m) Spectra line weighs only 66 lb (30 kg) and we release at about 1700 ft. (520 m), not all that much better than the steel line we used to use -- this "Hoistline" must have something going for it besides light weight! I guess Lippman quotes some false numbers. Having used a steel rope and a the plastic rope on the same winch fpr one year, the plastic rope did not have a significant advantage concerning achievable height (between 100 ft for an ASK-21 and at maximum 300 ft for a Ka-8). In my opnion the advantage es the handling, not in the launch heights. Bye Andreas |
#8
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"Andreas Maurer" wrote in message ... I guess Lippman quotes some false numbers. Having used a steel rope and a the plastic rope on the same winch fpr one year, the plastic rope did not have a significant advantage concerning achievable height (between 100 ft for an ASK-21 and at maximum 300 ft for a Ka-8). In my opnion the advantage es the handling, not in the launch heights. You know, Andreas, I guess it's possible that they lied and then faked a video of the launch but I think it's more likely that they really did what they said since a lot of independent people are watching carefully. It could be that Lippmann gets high launches because they really know their stuff. Bill Daniels |
#9
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Thirty five years ago I certainly broke a UK winch launch height record from
Hus Bos. After packing the hangar for the day because of 25kt plus westerly, a handful of us elected to do some kiting. I was the lucky one in a Swallow, and kited up through a thin layer of stratus to just over 3,000' when a jerk on the cable warned me it had broken. I dutifully released my end and celebrated with a half dozen loops down and up through the stratus. When I eventually landed, everyone was running around. I learned that the winch driver had been a little late the drum of outgoing cable and the end of the cable had pulled off the drum. When I released the 3ft parachute my end opened and the wind dragged around 4,000' of solid steel wire a couple of miles cross country - blacking out a couple of villages en-route. We spent several hours (and experienced much apprehension) retreiving and cutting the cable into manageable pieces, and carting it away in the back of a truck. We swore each other to secrecy, and vowed never to repeat the adventure. We had no repercussions despite media reports of blackouts. I think now the tale can be told... Lou Frank "OscarCVox" wrote in message ... At our site in the UK we are restricted to a max 300ft winch launch. However I have seen this achieved several times. Well over 3000 ft is achievable if you use the kiting technique, ie let cable out slowly when the glider is at the top of the launch but still attached, then wind in to kite up to a higher level. This can be repeated until you run out of cable. It is only achievable with a substantial headwind. |
#10
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On Fri, 17 Dec 2004 20:29:41 GMT, "Bill Daniels"
wrote: You know, Andreas, I guess it's possible that they lied and then faked a video of the launch but I think it's more likely that they really did what they said since a lot of independent people are watching carefully. It could be that Lippmann gets high launches because they really know their stuff. No need to fake anything, Bill... I've seen at least a dozen of 3.000ft+ launches of them, but with 6.500 ft of rope it's pretty easy to get high if the wind is strong enough. Of course with such long ropes the light weight of the plastic starts to play a role - the longer the rope, the more advantageous gets a light rope. With the standard rope length of about 4.000 ft the height advantage compared to our steel cable (on a slightly stronger winch) is impossible to judge visually. Bye Andreas |
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