derek critcher 2 Posted January 29, 2009 Share Posted January 29, 2009 I have recently finished building Cyril Carr;s kestrel, there is a discrepancy between the CofG shown on the plan i.e between zero &1 inch from the L-e and the build instruction which says 1.3/4 from L-e. Has anyone out there solved this riddle. ( Are you out there Cyril ??) Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted April 7, 2009 Share Posted April 7, 2009 Hmmmm. Was this information forthcoming? This information would be nice, as I have just decided to build one.. Have had the plan scanned at the local print shop. Makes building so much easier when you have 2 copies to go from. One to build on and one for refference. Have you flown yours yet? Quote Link to comment Share on other sites More sharing options...
derek critcher 2 Posted April 10, 2009 Author Share Posted April 10, 2009 to Kevin, re Kestrel Hi I have not been able to get the information re CoG and have set mine up at 1.3/4in from the leading edge. I have attempted to fly twice but the wind has been a little too strong and the model has blown over and broken a rotor blade. I think this may be a weak point in the design and. think a length of piano wire set into the L/E of the rotors may be a good idea. I am also going to try using an aluminium hub in the shape of a cross as I feel I will be able to make a more positive and accurate dihedral and angle of attack to the rotors Derek Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted April 10, 2009 Share Posted April 10, 2009 This is far as mine has got so far. I like to make a kit of parts before comencing the build. Good luck with the maiden. I think the wire idea may add to much weight to the tips but may be worth a try. Keep me posted. Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted April 10, 2009 Share Posted April 10, 2009 I don't remember where I set mine but the critical thing with autogyros is to make sure they hang nose down when supported at the rotor hub(s). Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted April 23, 2009 Share Posted April 23, 2009 Well after a little work I have got to this stage. Fusalage constructed. Now to set about the "wings"... Quote Link to comment Share on other sites More sharing options...
Daniel Meurer Posted May 10, 2009 Share Posted May 10, 2009 I would love to build one, but can´t find where to order the plan. Could any one advise ? Thanks. Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted May 10, 2009 Share Posted May 10, 2009 It was a free plan in RCM&E - try the back orders dept. Quote Link to comment Share on other sites More sharing options...
Daniel Meurer Posted May 10, 2009 Share Posted May 10, 2009 Thanks Martin ! will do that. best regards. Dani Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted May 10, 2009 Share Posted May 10, 2009 Or here... http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=150344461661 Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted May 11, 2009 Share Posted May 11, 2009 Daniel If you buy the ebay item, can you tell us whether you receiver a photocopy or the original item. Thanks, it's just that there are a number of ebay 'copiers' around Edited By David Ashby - RCME moderator on 11/05/2009 08:47:21 Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted May 11, 2009 Share Posted May 11, 2009 The picture on eBay shows the original magazine article and folded plan. Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted May 11, 2009 Share Posted May 11, 2009 Yup, let's hope that's what's received eh? Quote Link to comment Share on other sites More sharing options...
Daniel Meurer Posted May 11, 2009 Share Posted May 11, 2009 No fear ! would just need to know wich issue to order.....at yours obviously thanks for your help ! Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted May 11, 2009 Share Posted May 11, 2009 Thanks Dan, here's the plan link The issue is out of stock now but I've just PM'd you. Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted May 11, 2009 Share Posted May 11, 2009 Update. "Wing" completed. The blades have been painted a matt black and will be covered with "Poly-C" The grunt will be provided by either an old .35 OS MAX or a not quite so old .35 OS Max FP.. Quote Link to comment Share on other sites More sharing options...
Daniel Meurer Posted May 12, 2009 Share Posted May 12, 2009 Thanks David ! Plan has been rdered to MyHobbyStore, hope that plan and thread?s will guide me to fling Kestrel. Danni Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted May 20, 2009 Share Posted May 20, 2009 Done a little more on her today. The blades have been painted matt black and given 2 coats of Poly-C. The wing has been covered. Yellow Solartex. A question for you all to ponder. In the magazine article and on the plan it tells you to build two sets of blades, one the mirror of the other. So when you put the rotors on the wing, which way should they rotate? Did that make any sense..?? Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted May 27, 2009 Share Posted May 27, 2009 Nearly all done. Just a cover to go over the servo bay required.. Quote Link to comment Share on other sites More sharing options...
Daniel Meurer Posted June 2, 2009 Share Posted June 2, 2009 Hi Martin, have placed some pics of the Fuzs building sequence. Hope to finish it in about 2-3 weeks. Thanks also to Kevin, his photos are being a great help. Has any one flown it yet ? Quote Link to comment Share on other sites More sharing options...
Daniel Meurer Posted July 22, 2009 Share Posted July 22, 2009 First two flights successfully survived ! She resulted a little nose heavy so that 95 Gr of lead in the rear was just enough to achieve the CG at 45mm / 1 3/4" behind leading edge. Final zero fuel weight :1850 Gr. Taxi test runs showed good response and feeling. All throws as by plan indicated. Maiden flight took place on july 11th, no flights possible on the 18th due wind conditions. First flight was a little twitchy due excesive rudder response, corrected to 50% expo. and 2nd flight was a delight, and Cyril was absolutely right: its a delight to fly and a real head turner ! Hope to place video after next weekend. You will find it on our club site; www.rcvoltor.com Thanks to all those who helped! P.S.: the next one is been built by a club mate, guess it won't be the last one. Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted August 6, 2009 Share Posted August 6, 2009 Seems like long ago that I built this. Anyway the maiden was today. Took off like a scalded cat before the rotors started to turn. That took me a little by suprise. Flew well with no trim required. The engine was not running 100% so bought her in for a landing! Was a little short and she ended in the rough stuff. One blade broken. Will build another this week and try again. What did I learn? Well. It is many tears since I flew 3 channels, and I need to keep it in a little(lot) closer.. Dissorientiation was a big problem for me. Will post picture of the damged roter in a day or two. Quote Link to comment Share on other sites More sharing options...
NSA Posted January 5, 2011 Share Posted January 5, 2011 Only just found this thread. I built a version of Kestrel in 2009 converted to electric. Same problem with CoG but followed the route from my small autogyros balanced just behind the rotor masts to give slight nose down attitude. Despite the time lapse I hav estill not flown her, but taxi trials showed up two issues. I found that with the rotors mounted one way that the propwash cancelled out the forward motion and the rotors stopped ! Reveresd the rotors and blades ru up fine, but so far only fast taxi runs! Details for interest/comments are: Outrunner 300 watts running off 3 cell x 2200maH Lipo 12 x 6 APC glass/nylon prop PIctures below: The others are a full bodied Al foot Twirly (Blue) and a 2/3 rd size for Indoor(Red) Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted January 5, 2011 Share Posted January 5, 2011 I had forgotten about this thread also. Mine has since had many succefull flights. Quote Link to comment Share on other sites More sharing options...
will -0 Posted April 22, 2015 Share Posted April 22, 2015 So which is the right way to have the rotors turning then? Quote Link to comment Share on other sites More sharing options...
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