David perry 1 Posted October 12, 2010 Share Posted October 12, 2010 Well Ive spent the afternoon cutting out the parts for a Kestrel gyro. Ive decided to electrify this one, using the motor and ESC from a deceased PZ Me 109 I have lying around. Well, my son does, but he aint here, tee hee. I also have quite a few proper helicopter blades and might try to utilise these, we'll see. David Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted October 12, 2010 Share Posted October 12, 2010 I have one of these. OS35 MAX powered. Flies nicely in the right conditions. Looking forward to the build. My pictures can be found here. http://www.modelflying.co.uk/albums/member_album.asp?a=5636 Quote Link to comment Share on other sites More sharing options...
derek critcher 2 Posted January 6, 2011 Share Posted January 6, 2011 Hi Kevin, you may have a little trouble with using copter blades as most are designed to spin in one direction whereas the kestrel blades have to contra-rotate. Derek Quote Link to comment Share on other sites More sharing options...
David perry 1 Posted January 6, 2011 Author Share Posted January 6, 2011 It was me with the blades. Thanks for the info but my blades are 3D ones: symmetrical section. However, we'll see! D Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted January 6, 2011 Share Posted January 6, 2011 Yep mine has the as designed by Cyril flat blades, that contra-rotate. I did experiment with a 3 blade unit but did not put enough angle on the blades. Result, well it needee a little tlc afterwards. All sorted now. Quote Link to comment Share on other sites More sharing options...
bees Posted May 7, 2018 Share Posted May 7, 2018 I am also building the Kestrel and was wondering how to determine the CG. the plan shows 1/34 from the leading edge but was wondering if you balance the Kestrel like a normal fixed wing. Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted May 7, 2018 Share Posted May 7, 2018 I built one of these quite a few years back when it appeared in the magazine (as did a clubmate) and it flew very well - as long as it wasn't shedding blades. Did anyone else have problems with them? I tried various grades of balsa but never really cured the problem - although I do have some "proper" gyro blade stock which I bought to try and never got around to. It was quite amusing to see the blades stop in flight though...at sufficient airspeed, mine would come to a halt and the model would be flying on the tiny stub wings that support the blade hubs! IIRC, the main requirement of the C of G was that the nose should drop if the model was supported from the blade hubs. Quote Link to comment Share on other sites More sharing options...
Fatscoleymo Posted May 8, 2018 Share Posted May 8, 2018 I built one earlier this year, electric setup. Fly's well, and is certainly different in the air. The cg on mine is just behind the rotor masts, slight nose down attitude. Needs a touch of power on the flair just before contact to halt the rate of descent... It's fun.. Fats Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.