Nigel R Posted January 9, 2019 Author Share Posted January 9, 2019 Sounds just about perfect Don.You're welcome to measurements from mine - it's a straightforward scale up from the original design. Quote Link to comment Share on other sites More sharing options...
Don Fry Posted January 9, 2019 Share Posted January 9, 2019 Great, what's the scales ratio, and I will print a plan. For scales read scale. Edited By Don Fry on 09/01/2019 21:04:42 Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 9, 2019 Author Share Posted January 9, 2019 https://www.rcgroups.com/forums/showthread.php?836389-The-NutBall-best-damn-RET-foamy-yet Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 9, 2019 Author Share Posted January 9, 2019 Don there is a diagram in the first post on that massive thread. That has all the measurements for a 17" version. Mine is 23" but all the same shapes and angles and whatnot. Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 9, 2019 Author Share Posted January 9, 2019 I deviated a bit by making a U shaped spine underneath. The spine is as long as the diameter of the main disc. It sticks out by about 4". This made balancing very easy. Motor is hung on the end of the spine as photos make apparent.Edited By Nigel R on 09/01/2019 22:28:32 Quote Link to comment Share on other sites More sharing options...
Don Fry Posted January 10, 2019 Share Posted January 10, 2019 Thank you Nigel. Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 10, 2019 Share Posted January 10, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 10, 2019 Author Share Posted January 10, 2019 No problem Don. Piers, not sure how I missed your links, the Little Bird is great. The Capricorn looks great. On a similar note, my bucket list contains Laddie Mikulasko's excellent looking Arrow: https://outerzone.co.uk/plan_details.asp?ID=6504 but reduced size in foamboard or depron. It is a simplified version of his Northstar: https://outerzone.co.uk/plan_details.asp?ID=10325 which was reduced to make the Polaris - starting another very busy RCG thread - which seems to have been cloned by Hobbyking as the Artic Cat. Not yet though. Going to do a standard prop-at-front delta type before that, as mentioned I like the look of the Dekan's Simple Delta which bears a passing resemblance to the Drakken. Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 10, 2019 Author Share Posted January 10, 2019 Dave, draggy, yes, the glide is not fabulous. Although mine will still stay aloft for 8 minutes on a battery that will give 10 minutes on a clean (ish) conventional layout model. So perhaps not all bad. Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 10, 2019 Author Share Posted January 10, 2019 Don, also worth noting, the downthrust angle is very important. I had mine way out on first flight and full throttle produced nothing but tight loops. Easily fixed with a few strategic washers. Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 10, 2019 Share Posted January 10, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Piers Bowlan Posted January 10, 2019 Share Posted January 10, 2019 . Edited By Piers Bowlan on 10/01/2019 14:51:11 Quote Link to comment Share on other sites More sharing options...
Piers Bowlan Posted January 10, 2019 Share Posted January 10, 2019 'Not a bad glide' . It could depend on what you are talking about. These low aspect ratio / low wing loading 'flying wings' can fly at a high A of A without stalling, but without power the glide angle is steep, so not a good glide compared with conventional aircraft. However, their sink rate is low, due to the low wing loading, so from that perspective you could say they glide well. Especially true, as they are so easy to control and stable in this region of their flight envelope. They also have a very good speed range, the Arap S2 stalled at 23mph but had a top speed of 97mpg, all on 37hp; remarkable! There have been other similar low aspect ratio aircraft like the Barnaby Wainfan FMX-4 Facetmobile and the new two seat Verhees Delta. Fascinating stuff! Nigel, thanks to the Outerzone link to Laddie Mikulasko's Arrow. I built a North Star some years ago but lost the use of the lake before I finished it sadly. I only binned the wing six months ago - I could have built an Arrow from it. Dam! Edited By Piers Bowlan on 10/01/2019 14:50:14 Quote Link to comment Share on other sites More sharing options...
Don Fry Posted January 10, 2019 Share Posted January 10, 2019 Thank you lads, I will do one. Initial fag packet calculations done. Piers, I built, about 20 years ago, a free plan from Radio control Scale Aircraft? It was a scalish thing of something with the nickname Flying Doughnut . Interwar French design I think. It flew ok. It had no stall to speak of, but eventually mushed without much control. A circular wing design. Would update well to electric and depron. Pretty thing. Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 10, 2019 Author Share Posted January 10, 2019 The two seater Verhees is a lovely piece of work. Dream project, when the kids have moved. I think deltas have a lot going for them in the land of light aviation, but I am not a lightplane owner, so, pinch of salt. "It could depend on what you are talking about." Well, my comment was specifically relating to glide time. During a glide it is of course easily controllable. It is simply that the glide slope is quite steep. Of course this steep glide can be of huge benefit if you operate from small fields. Not specifically for this size foamie, but particularly in bigger heavier models. Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 10, 2019 Author Share Posted January 10, 2019 Farman 1020? Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 10, 2019 Share Posted January 10, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 10, 2019 Author Share Posted January 10, 2019 Doesn't count - that was at least six feet away! Quote Link to comment Share on other sites More sharing options...
Don Fry Posted January 10, 2019 Share Posted January 10, 2019 Not a fairman, it had a circular wing, with a hole in the middle, like a toroidal magnet, and a fuselage laid between the outer circumference. I still have the magazine, but it's with an ex pupil. Must get it back. Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 10, 2019 Share Posted January 10, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Roger T Posted January 10, 2019 Share Posted January 10, 2019 Don, were you thinking of the Lee Richards annular wing? This is the model in the Science Museum, but there's also the biplane version featured in the 'Those Magnificent Men' film. RogerT Edited By Roger T on 10/01/2019 18:08:06 Edited By Roger T on 10/01/2019 18:09:04 Quote Link to comment Share on other sites More sharing options...
Don Fry Posted January 10, 2019 Share Posted January 10, 2019 That's the one. Thank you, it's been bugging me. Mine did a lot of flying, and I just thought of it as doughnut. Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 10, 2019 Share Posted January 10, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Fatscoleymo Posted January 10, 2019 Share Posted January 10, 2019 That Lee Richards design looks like the 'toilet seat' guitar that Ronnie Woods played on one of The Faces TOTP appearances....maybe Ronnie was an Aeromodeller?...….or....maybe Lee Richards was really Keith Richards and he loaned Ronnie his model?......it's late..I'll get my coat... Fats.. Quote Link to comment Share on other sites More sharing options...
onetenor Posted January 11, 2019 Share Posted January 11, 2019 Here is a rectangular one. A flying carpet. built on in the 50 s F/F. Didn't so much glide power off more of a wobbly mushing descent. Like stable flat stall. Quote Link to comment Share on other sites More sharing options...
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