From: Richard Chapman Subject: Sputnik 1 Quad conversion Date: Mon, 17 Jun 1996 11:57:08 -1000 Organization: UnipalmPIPEX server (post doesn't reflect views of UnipalmPIPEX) Message-ID: <4q4kbk$5v3@soap.news.pipex.net> Hi everyone, Has anyone ever tried to convert a Sputnik 1 to a quad line kite? Is it a feasible option or would it be better to use a proven quad plan? Presumably the hardest part of any conversion would be the bridling for the brake lines. = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = From: miel@knoware.nl (Emiel Stroeve) Subject: Re: Sputnik 1 Quad conversion Date: Tue, 18 Jun 1996 03:31:13 -1000 Organization: BT Internet Message-ID: <4q6b7j$nq2@snow.btinternet.com> Dave Kendall wrote: >On 17 Jun 1996, Richard Chapman wrote: >> Hi everyone, >> >> Has anyone ever tried to convert a Sputnik 1 to a quad line kite? >The brake lines deform the bottom of the kite - crudely effecting an >airplane's ailerons and thus turning the kite on its centre. I have never >bothered to convert a two liner to a quad - but guess doing so wouldnt be >that hard re: brake lines, as the basic concept is quite simple. >If I were you I'd leave the sputnik alone - perfectly ok as a two liner, >and make a new quad instead. That way you dont risk damaging an already >functional kite (in the words of Yorkie Paul: If it aint broken don't fix >it!). I agree here, I saw a quaded sputnik on Fano wich was really deformed, even in straight flight. It had the advantages of a quad though, a better upwind course and faster turns. Deformation however is something an wing/foil does not want. I also saw a Paua, now that's a good quad design. The brake lines don't attach to the trailing edge, but somewere in the middle. Deformation is minor I guess. Emiel = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = From: robert.pudlo@dbag.ulm.DaimlerBenz.COM (Robert Pudlo) Subject: Re: Sputnik 1 Quad conversion Date: Tue, 18 Jun 1996 23:12:19 -1000 Organization: Division of Applied Sciences, Harvard University Message-ID: <9606190912.AA07141@dagobert.dbag.ulm.DaimlerBenz.COM> rbv67@dial.pipex.com wrote: >Has anyone ever tried to convert a Sputnik 1 to a quad line kite? >Is it a feasible option or would it be better to use a proven quad plan? I have no experience with the Sputnik 1 but I quadlined my Sputnik 4 (5.2 m^2). I'm satisfied with it as it launches and relaunches very easily and it's easier to recover the Spuntik once the wingtips colapse or other strange things happen. You could also use the braking-lines to decrease turning radius, but I tend to fly the quadlined Sput like a standard bridled one and only use the braking-lines to recover/relaunch. Therefore you don't loose so much speed while turning the kite and speed of the kite is what generates the required pull for buggying. Turning the kite by applying some braking forces with the braking lines will slow down the Sput so that you will end up with very low pull and therefore very low speed of the buggy after turning. >Presumably the hardest part of any conversion would be the bridling for >the brake lines. This is an fairly easy thing: Just lay out the Sputnik and sew some loops to the trailing edge at the end of those profiles where the bridle is connected. Then guess the length of braking lines, knot them together and testfly the Sputnik. You will easily see which of the braking lines are to short as the trailing edge will be deformed when braking. Make the appropriate lines a little longer and after 10 to 20 minutes and maybe two or three readjustments, you will have a very nice quadlined Sputnik. Attach the braking lines to the loops at the trailing edge with a larks head knot so you could remove them very quickly to convert back to a 2-liner. Have fun, Robert. ... go buggy naked, but use a kite big enough to pull you out of the 13 degrees Centigrade North Sea again. -- Marty Sasaki sasaki@das.harvard.edu = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = From: ahclem0013@aol.com (AhClem0013) Subject: Re: Sputnik 1 Quad conversion Date: Tue, 18 Jun 1996 22:08:54 -1000 Organization: America Online, Inc. (1-800-827-6364) Message-ID: <4q8cim$3lt@newsbf02.news.aol.com> In article <4q6b7j$nq2@snow.btinternet.com>, miel@knoware.nl (Emiel Stroeve) writes: >I agree here, I saw a quaded sputnik on Fano wich was really deformed, >even in straight flight. It had the advantages of a quad though, a >better upwind course and faster turns. Deformation however is >something an wing/foil does not want. >I also saw a Paua, now that's a good quad design. The brake lines >don't attach to the trailing edge, but somewere in the middle. >Deformation is minor I guess. Almost no deformation, best upwind kite they ever made says Peter. Flys more like a rev than a quad-foil. aoxo-dean = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = From: Dave Kendall Subject: Re: Sputnik 1 Quad conversion Date: Tue, 18 Jun 1996 02:05:03 -1000 Organization: Cripps Computing Centre, The University of Nottingham Message-ID: On 17 Jun 1996, Richard Chapman wrote: > Hi everyone, > > Has anyone ever tried to convert a Sputnik 1 to a quad line kite? > > Is it a feasible option or would it be better to use a proven quad plan? > > Presumably the hardest part of any conversion would be the bridling for > the brake lines. The brake lines deform the bottom of the kite - crudely effecting an airplane's ailerons and thus turning the kite on its centre. I have never bothered to convert a two liner to a quad - but guess doing so wouldnt be that hard re: brake lines, as the basic concept is quite simple. If I were you I'd leave the sputnik alone - perfectly ok as a two liner, and make a new quad instead. That way you dont risk damaging an already functional kite (in the words of Yorkie Paul: If it aint broken don't fix it!). Send a cheque to 'Chris Sands' for 5 english pounds for his kite plan pack - which includes all the bridle plans for kites (quads) sized 2m,2.5m,3m,4m,5m,6m (I.e. 6m squared - BIG!!! equivalent to a skytiger Hi 60 in dimensions). It also includes a rib profile for each size and is a total BARGAIN. I have used it to build a 3m sq. and 6m sq. kite and they both flew first time, so put that in yer pipe and smoke it. Just mention me in your letter to him, and I'm sure he'll respond as quickly for you as he did for me. His address is available to anyone who mails me directly - dont wanna ruin his day by broadcasting it multi-national! Cheers, and I hope that helps (?). Dave (who was first helped by rec.kites by Paul Chandler - so this forum CAN make a difference!) Dr.D.Kendall QMC, Nottingham England, UK. = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = From: Paul Chandler Subject: Re: Sputnik 1 Quad conversion Date: Mon, 17 Jun 1996 10:49:16 -1000 Organization: Buggy Bum Message-ID: Dave Kendall writes [lots snipped] >(who was first helped by rec.kites by Paul Chandler - so this forum CAN make >a difference!) Aw, c'mon Dave. It's enough to make a guy blush!! I'll help *anyone* if I have the expertise/knowledge/time - No slurr intended on you Dave :-) ---------------------------------- | PAUL CHANDLER - York Kite Flyers | | Paul@FreeWind.demon.co.uk | ---------------------------------- = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = From: miel@knoware.nl (Emiel Stroeve) Subject: Re: Sputnik 1 Quad conversion Date: Wed, 19 Jun 1996 09:04:39 -1000 Organization: EuroNet Internet Message-ID: <4q9j07$j21@news.euro.net> ahclem0013@aol.com (AhClem0013) wrote: >In article <4q6b7j$nq2@snow.btinternet.com>, miel@knoware.nl (Emiel >Stroeve) writes: >>I also saw a Paua, now that's a good quad design. The brake lines >>don't attach to the trailing edge, but somewere in the middle. >>Deformation is minor I guess. >Almost no deformation, best upwind kite they ever made says Peter. Flys >more like a rev than a quad-foil. >aoxo-dean It got beaten by lots of Mosquito's, Q-comp's, Libre foils etc. during the race. Perhaps the windconditions weren't that good for the Paua, or the combination of driver-wind-conditions was wrong. I saw it a day or 2 earlier and it beated every other buggier around. Emiel (__) (__) Emiel Stroeve The Netherlands (oo) (oo) ---------------------------------------------------/----\/------/----\/ http://www.euronet.nl/users/mielse/index.html /||,--|| /||,--|| E-mail: miel@knoware.nl * ^^ ^^ * ^^ ^^ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = From: ahclem0013@aol.com (AhClem0013) Subject: Re: Sputnik 1 Quad conversion Date: Fri, 21 Jun 1996 08:27:24 -1000 Organization: America Online, Inc. (1-800-827-6364) Message-ID: <4qepic$i6h@newsbf02.news.aol.com> In article <4q9j07$j21@news.euro.net>, miel@knoware.nl (Emiel Stroeve) writes: >It got beaten by lots of Mosquito's, Q-comp's, Libre foils etc. during >the race. Perhaps the windconditions weren't that good for the Paua, >or the combination of driver-wind-conditions was wrong. I saw it a >day or 2 earlier and it beated every other buggier around. > > Peter said that was the case, so you can bet that he has already modified the design. It is great that there is competition taking place among the power foil builders, better kites will be the results. aoxo-dean = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =