Tony Bennett Posted June 8, 2011 Author Share Posted June 8, 2011 i have cut holes in the vertical and horizontal stabs and managed to take 47gms off of the nose to keep the cog in the right place. so that's a start. but now its raining so any tests are out of the window. Edited By tony bennett on 08/06/2011 14:23:47 Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted June 8, 2011 Share Posted June 8, 2011 Tony, I agree with Tom, try test gliding it over some long grass? Never give up, the fun part is what you are doing now. When you do get it to fly it will be a good feeling. It does look 'right' so I see no reason why it shouldn't fly with a bit of 'tinkering', its worth checking the wings for warps, so easy to do with a high aspect ratio wing. Could you take a photo of it side on, so we can see the wing incidence etc? Very nice looking Rich Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted June 10, 2011 Author Share Posted June 10, 2011 well we took it out for another go.still will not lift off, so i put on full power a bit of up elevator and lobbed it into the air. dived straight into the ground and smashed the wing and tail off. the wing was just not giving any lift, must have done something fundamentally wrong with the wing design. oh well. we will save what we can and turn it into something else. back to the drawing board. Quote Link to comment Share on other sites More sharing options...
Alan Cantwell Posted June 10, 2011 Share Posted June 10, 2011 even a flat plate would lift, sounds like a decalage problem, can you give us a wing section, and a view of the fuselage from the side, lets see if the wing, or the tails out of plonk Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted June 10, 2011 Author Share Posted June 10, 2011 no point now as its scrap.still we will try again with something else. Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted June 11, 2011 Share Posted June 11, 2011 Hi Tony . Allan is correct ,I have PMd you. Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted June 11, 2011 Share Posted June 11, 2011 Tony, If you have the fuselage left why not try a parallel wing instead, just one set of ribs to cut Don't give up so easy, its only a scratch! Rich Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted June 11, 2011 Author Share Posted June 11, 2011 i managed to repair the tail, though the wing might be a wee bit harder. put a set of polystyrene wings that i have from a bungie glider and took it over the field again.still wont rog.so the next field is 3 foot high grass, full power and lobbed it into the wind.it flew sort of.fluffs and wallows in any form of head wind, so it needs more power.i will try to make a new wing at some point and try another motor. Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted June 11, 2011 Share Posted June 11, 2011 That field of 3ft grass sounds ideal for test flights. Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted June 11, 2011 Share Posted June 11, 2011 Just checked the wind for your location Tony ,its showing 9 mph gusting 12 mph,could have been to much for such a light model ? Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted June 11, 2011 Share Posted June 11, 2011 Tony, If it is wallowing it may be too much dihedral, but it could be a dutch roll and may need more vertical fin area. The main thing it has flown, you can go from there Well done Rich Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted June 11, 2011 Author Share Posted June 11, 2011 welli managed to repair the wing.i had to cut about 4 inches out of the main section and re join the ends. took it out to the long grass for another go. full power, lobbed into the wind and she flew.not briliantly but it was a flight.there is enough power for a electric glider but the undercarrage has to come off as its just drag.plus i think the wind was a bit too strong today. in the end i got about 10. 30 sec flights out of it before she landed badly and broke the wing again. new plan of action is to repir the main section and fit the tips on flat this time with only the very tips angled, then for strength i will plank the wing instead of tissue paper. so thats me busy for a few days then. but it FLEW. Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted June 11, 2011 Share Posted June 11, 2011 Patience and lots of perseverance seems to have started working for you then Tony ,well done ,the wind was really a bit much for that model ,so the fact it flew in adverse conditions bodes well for future flights in less wind. Off flying now speak to you later this evening. Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted June 11, 2011 Author Share Posted June 11, 2011 yeah the wind was a bit strong but i had got to the point of "its going to fly or else" so i took it out. some big gusts didn't help, but it managed to some extent, i think with a bigger motor it would punch through the wind a bit better. mk2 will be ready in a few days Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted June 13, 2011 Author Share Posted June 13, 2011 well the new wing is nearly finished.i have bodged one up out of the bits left over from the last wing and some new bits. just waiting for the glue to dry and then i can paint it, stick it on and try to break it again. have taken the undercarriage off completely and will just hand launch from now on, it has a folding prop so i should not bust it too easily this time. winds picking up again by the looks of it.so maybe not tonight then. Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted June 13, 2011 Share Posted June 13, 2011 Tony XC weather recons the wind for your post code will be down to 6 mph at 9 pm.Edited By Tom Wright 2 on 13/06/2011 17:56:43 Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted June 13, 2011 Share Posted June 13, 2011 Same here Tom, I will be off up the field for an hour as soon as that wind dies down! Tony, Perfect wind to do a couple of test glides Rich Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted June 13, 2011 Share Posted June 13, 2011 Hi Rich. It better calm down Ive booked Pete to do the pipe stick video.What are you flying tonight ? Long grass Tony ?Edited By Tom Wright 2 on 13/06/2011 19:22:23 Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted June 13, 2011 Share Posted June 13, 2011 Tom, We have got our autogyro Fly-in this weekend and I want to go out and test my REX design (Rich's EXperiment). This was the model that I experimented on to 'crack' a 2 bladed fin only model which assisted me in the design of my Nellie. I have also made up a new motor mount for Nellie which has dropped the motor about 20mm. If all goes to plan I want to try and get these models onto my new transmitter. Will also take my Coquette out to calm the nerves first. Have fun with the pipe stick model and I look forward to a flight video Rich Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted June 13, 2011 Author Share Posted June 13, 2011 yeah nice evening. pity i was having to help the misses with the gardenkept dropping hints but i think her ear plugs were in. Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted June 13, 2011 Share Posted June 13, 2011 Shame about that Tony ,right after we did the "Pipe" video the wind dropped to virtually nothing. Rich. Hope your evening went well ? Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted June 14, 2011 Author Share Posted June 14, 2011 wing rebuilt and ready for a test.out to the long grass.power onhand launch and crash.just dived straight into the ground and smashed into bits. no lift againweird.it flew with the polyhedral but not without. so now its bin time and start something else.then to finish off my evening my stick decided to fold up one wing while in mid flight.50ft plunge into the ground. stick before crash. more repairs. Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted June 14, 2011 Share Posted June 14, 2011 Tony, I doubt whether the polyhedral had anything to do with why it did fly, more likely to be a bit more wing area with the extra tips. If the wing incidence was correct it must have been just too nose heavy. Never mind, we all have the same experience from time to time. For me that is the driving force. Tom, Yes all went well yesterday evening, went out a again tonight to re trim some others. Nice evening bar for the May Bugs!..the seagulls were having a feast! Rich Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted June 15, 2011 Author Share Posted June 15, 2011 i'm not bothered by the smash to be honest.just puzzled cos all i did was flatten the polyhedral out, the wing had the same area as before.didn't alter the incidence from last time.less wind as well.took the undercarriage off and re balanced it.so the cog was the same as last time. never mind.onwards and upwards. Quote Link to comment Share on other sites More sharing options...
Tom Wright 2 Posted June 15, 2011 Share Posted June 15, 2011 Hi Tony. The stick wing failure can only be caused by pulling to much G eg to much elevator during tight turn ,or recovery from excessive speed . when flown out doors this model is only designed for gentle maneuvers at low power settings .Beefing up the wing with minimum weight increase should make the model more resilient to higher air loads. On the positive side it was the most successful flying session to date and you achieved the ROG . Quote Link to comment Share on other sites More sharing options...
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