David P Williams Posted October 29, 2019 Share Posted October 29, 2019 Geoff - not sure what you mean by 'ailerons blowing back', and what difference would it make whether it was flying downwind or upwind? Quote Link to comment Share on other sites More sharing options...
Graham R Posted October 29, 2019 Share Posted October 29, 2019 Would like to know how you get the black so neat around the curves of the nose without creases in. Edited By Graham R on 29/10/2019 17:30:27 Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted October 29, 2019 Share Posted October 29, 2019 Saw one of my flying pals' scaled up JP at the field today - she looked lovely in the air and flew very well indeed. He has a surfeit of 64mm fans and no 50mm fans and so he scaled up the plant to fit, making for a larger model, with a built up wing and quite a large amount of the upper and lower fuselage sheeting removed to save weight. Quote Link to comment Share on other sites More sharing options...
Geoff Parkes Posted October 30, 2019 Share Posted October 30, 2019 David, we flew the plane yesterday in approx.20 mph plus winds, so there was an appreciable speed difference going into wind and with the wind behind the plane, at a guess it was 50% faster with the wind behind the plane, this being so there was more wind pressure on the ailerons - the aileron servos are only small because they project from the underside of the fuselage and they dont develop much power, we think on the downwind leg the excess speed was overpowering the servos, upwind and reduced speed on the downwind leg caused no problems, I installed a larger servo on the elevator and did not have any problems, as an afterthought it was way to windy for a test flight, but we all know what temptation can make us do ! I forgot to mention that I have made a removable hatch on the top of the fus.it goes from just in front of the canopy to just behind the canopy, it makes fitting and changing the battery much easier and gives access to the radio, speed controller etc. any one want photos send me your mobile no. and i will send. Quote Link to comment Share on other sites More sharing options...
Cliff 1959 Posted October 30, 2019 Share Posted October 30, 2019 Posted by Geoff Parkes on 30/10/2019 09:00:11: David, we flew the plane yesterday in approx.20 mph plus winds, so there was an appreciable speed difference going into wind and with the wind behind the plane, at a guess it was 50% faster with the wind behind the plane, this being so there was more wind pressure on the ailerons - the aileron servos are only small because they project from the underside of the fuselage and they dont develop much power, we think on the downwind leg the excess speed was overpowering the servos, upwind and reduced speed on the downwind leg caused no problems, I installed a larger servo on the elevator and did not have any problems, as an afterthought it was way to windy for a test flight, but we all know what temptation can make us do ! I forgot to mention that I have made a removable hatch on the top of the fus.it goes from just in front of the canopy to just behind the canopy, it makes fitting and changing the battery much easier and gives access to the radio, speed controller etc. any one want photos send me your mobile no. and i will send. Surely the faster downwind leg was ground speed, the air going over the wings is the same speed? Quote Link to comment Share on other sites More sharing options...
David P Williams Posted October 30, 2019 Share Posted October 30, 2019 That's what I was getting at Cliff. Geoff - it doesn't make any difference whether the wind is in front of or behind the aircraft. What you are seeing is the difference in groundspeed. If the aircraft is flying at 40mph through the air (airspeed) and the wind is 20mph, then to you on the ground it will appear to be flying at 20mph upwind and 60mph downwind. It's speed relative to the block of air around it is always 40mph though, so the air pressure on the ailerons is the same assuming the airspeed is kept the same. Quote Link to comment Share on other sites More sharing options...
Steve Jones 2 Posted November 3, 2019 Share Posted November 3, 2019 So , Gnat coming along. Quote Link to comment Share on other sites More sharing options...
Dave Chatterton Posted November 5, 2019 Share Posted November 5, 2019 Hi Tony just finished the fus and it’s looking great? It’s weight at the moment is 18.5oz inc battery so should turn out about 22-24oz. I did do one thing differently. I left joining the wing halves until having built the fuz. I then added wing joiner 4 to one wing half and then slid this into the fuz and then added the glue to the other wing half and slid it into the fuz to mate up with the one already in position, so no fiddling with a completed wing. I did purchase your plan pack so was able to start it a bit earlier than the December issue of RCME arrived. regards Dave Quote Link to comment Share on other sites More sharing options...
Tony Nijhuis Posted November 5, 2019 Author Share Posted November 5, 2019 Good Job Steve & Dave....... Quote Link to comment Share on other sites More sharing options...
Steve Jones 2 Posted November 6, 2019 Share Posted November 6, 2019 A lick of paint.. Quote Link to comment Share on other sites More sharing options...
Ray Wood 4 Posted November 6, 2019 Share Posted November 6, 2019 Hi All, Not as fast as you boys, still on the JP just ordered the Vac forms from Tony, hoping to finish before the Phantom is published, enjoying the build !! Can you guess the colour scheme?? Central Flying School with tip tanks. Regards Ray Quote Link to comment Share on other sites More sharing options...
Steve Jones 2 Posted November 12, 2019 Share Posted November 12, 2019 Nearly there Quote Link to comment Share on other sites More sharing options...
Steve Jones 2 Posted November 12, 2019 Share Posted November 12, 2019 Quote Link to comment Share on other sites More sharing options...
Steve Jones 2 Posted November 12, 2019 Share Posted November 12, 2019 Quote Link to comment Share on other sites More sharing options...
David P Williams Posted November 13, 2019 Share Posted November 13, 2019 Excellent Steve. I'm plodding along with the Provost, but various parts of the family are creating dramas that are keeping me away from the workshop. Quote Link to comment Share on other sites More sharing options...
Marc ROCHE Posted November 13, 2019 Share Posted November 13, 2019 Really nice job Steve: chef-d'oeuvre! We are waiting for the flight with impatience. Quote Link to comment Share on other sites More sharing options...
Steve Nash 1 Posted November 13, 2019 Share Posted November 13, 2019 Almost there ! just got to connect the controls and fix the intakes on. folland gnat plan now on bench ready to start next Edited By Steve Nash 1 on 13/11/2019 23:55:26 Edited By Steve Nash 1 on 13/11/2019 23:56:20 Quote Link to comment Share on other sites More sharing options...
Steve Nash 1 Posted November 13, 2019 Share Posted November 13, 2019 Quote Link to comment Share on other sites More sharing options...
Steve Jones 2 Posted November 14, 2019 Share Posted November 14, 2019 Lovely job Steve. Only advice I would give on flying following mine and seeing anothers... make sure the COG is correct or in fact a little in front. Both ours suffered pitching with the plan cog.. A little more nose weight and they both fly like on rails !! Fab model in the air Steve Quote Link to comment Share on other sites More sharing options...
Steve Nash 1 Posted November 14, 2019 Share Posted November 14, 2019 Thanks Steve. I have heard a few people saying about the c of g, so I will check before I take it out flying. I can get my pack right forward in the nose so hopefully I won’t need too much lead. Steve Quote Link to comment Share on other sites More sharing options...
Steve Jones 2 Posted November 14, 2019 Share Posted November 14, 2019 Anyone, Please don't take my COG comments as a complaint on the model.. its just what worked for us and Tony's models are fantastic (my sheet winged Spit and Mossie are still going strong after many years) ... I just what all who build to enjoy them in the air like I do.... Steve Quote Link to comment Share on other sites More sharing options...
Steve Nash 1 Posted November 14, 2019 Share Posted November 14, 2019 This is my first one of Tony’s planes that I’ve built but I have seen many vids of others flying his designs successfully. I’ve already photo copied the formers ready to stick on wood to start cutting out the Gnat as well. i really love the Gnat, it looks awesome. I can’t decide which colour scene yet so I was considering building two. I’ve already got two more FMS fans from Bangood just in case. If I don’t, I might build either the hunter or his earlier designed Mig. Steve Edited By Steve Nash 1 on 14/11/2019 12:59:12 Quote Link to comment Share on other sites More sharing options...
Simon Hargreaves 1 Posted November 14, 2019 Share Posted November 14, 2019 Steve (both Steves) - where did the pilot busts come from? Quote Link to comment Share on other sites More sharing options...
Steve Nash 1 Posted November 14, 2019 Share Posted November 14, 2019 Hi Simon, I got mine from realmodelpilots.co.uk they are 3d printed in the scale of your choice. steve Quote Link to comment Share on other sites More sharing options...
Simon Hargreaves 1 Posted November 14, 2019 Share Posted November 14, 2019 Great, many thanks. I guess you went of a 1/12 scale, or slightly smaller? Quote Link to comment Share on other sites More sharing options...
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