Stephen Jones Posted January 9, 2022 Share Posted January 9, 2022 So this will be my attempt at making a Peanut scale Autogyro . I have drawn up a CAD drawing of the YT-9 but will probable have to do a far bit of experimenting to get the weight down and to get it ti fly in the still air of a gym. Steve. Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted January 9, 2022 Author Share Posted January 9, 2022 (edited) So here is a start on the basic frame of the body. After two sides are built out of 1/16th balsa stripe. Steve. Edited January 9, 2022 by Stephen Jones typo 4 Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted January 10, 2022 Share Posted January 10, 2022 Steve Very neat. Just out of curiosity what makes an auto gyro Peanut Scale? Rotor diameter 13" or something else? Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted January 10, 2022 Author Share Posted January 10, 2022 Hi Simon, Peanut size model is defined as having either a maximum wingspan of 13” inches, or a maximum fuselage length of 9” inches. These sizes are recognised by the Federation International Aeronautique (FIA), which is the international governing body of model aeroplane competition. As Autogyro does not have wings I am going with the fuselage length. ? Steve. Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted January 10, 2022 Share Posted January 10, 2022 Steve Does the "or" mean I could build a Peanut scale ANT 25 with a fuselage length of 9"? It would have a span of 23.5". I think the answer lies in the word 'maximum' on both dimensions. By the same token I doubt a rotor of more than 13" diameter would be considered 'competition' acceptable. Even do a 13" rotor would give a lot of effective area. ? Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted January 10, 2022 Author Share Posted January 10, 2022 And it will not be rubber powered and I will not be entering it in any competition. Rather scale and peanut size. It was simple the best way I could describe its size is all. It does not mention rotor diameter and as each blade takes it in turn to generate lift you could argue its only the radius that counts. ? Steve. 1 Quote Link to comment Share on other sites More sharing options...
Max Z Posted January 11, 2022 Share Posted January 11, 2022 Hi Steve, Should this not be called JT-9, assuming it is based on the design of Jukka Tervamäki? Max. 1 Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted January 11, 2022 Share Posted January 11, 2022 Steve Peanut size is a fair enough description. I look forward to seeing the finished article. Simon 1 Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted January 11, 2022 Author Share Posted January 11, 2022 8 hours ago, Max Z said: Hi Steve, Should this not be called JT-9, assuming it is based on the design of Jukka Tervamäki? Max. Ooops yes it should be JT-9. Steve. ? Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted January 11, 2022 Author Share Posted January 11, 2022 3 minutes ago, Stephen Jones said: Ooops yes it should be JT-9. I wonder if admin can correct this for me and maybe put a picture of it on the header . ?? 3 minutes ago, Stephen Jones said: Steve. ? Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted January 15, 2022 Author Share Posted January 15, 2022 Ok a little update. I have soaked 2 stripes 0f 1/16th Balsa in water and put them in a make shift foam former to dry which may take some time in are cold weather also foam and plastic sheeting will hold onto the water a little longer. When dry I will use them to form the top part of the body. Steve. 1 Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted January 28, 2022 Author Share Posted January 28, 2022 Hi there, I have done a little bit more work on this one here are a few more pictures. Steve. 3 Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted January 28, 2022 Share Posted January 28, 2022 Ooh dainty. ? Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted January 28, 2022 Author Share Posted January 28, 2022 53 minutes ago, john stones 1 - Moderator said: Ooh dainty. ? Yes almost peanut size ? Thanks john.?? Steve 1 Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted January 29, 2022 Share Posted January 29, 2022 Nice work Steve, did you get the profile version flying? Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted January 30, 2022 Author Share Posted January 30, 2022 13 hours ago, Richard Harris said: Nice work Steve, did you get the profile version flying? Not as yet, I could not get it to track straight on the gym hall so resorted to a hand launch it looped and landed on the ground before I could get both my hands on the controls. No damage at all ? So it will work, but I need to get it to track on the ground and reduce the lift from the blades. I need a proper trimming session with it. Cheers Steve Quote Link to comment Share on other sites More sharing options...
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