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. https://outerzone.co.uk/plan_details.asp?ID=3610 Edited By onetenor on 11/01/2019 02:51:01 Quote Link to comment Share on other sites More sharing options...
Roger T Posted January 11, 2019 Share Posted January 11, 2019 Fats, there was a 'seat of comfort' flown control line at the (Hullavington) NATS unorthodox event around 1966. There was also a pair of ladies' underwear, inflated to an appropriate shape by the use of glass fibre resin, also flown under line control. As a shy young reclusive aeromodelling 15 year old teenager, I had no idea why it was called 'Ducted Fanny' until some several years later....... Quote Link to comment Share on other sites More sharing options...
Richard Harris Posted January 11, 2019 Share Posted January 11, 2019 Nigel, My kind of modelling, just shows you can have as much fun with the simplest of designs (probably more). One of my friends from Germany built something that has the same kind feel to it Like yours they are fun to fly, though a bit fishy...quite a site to see three Stingrays in the air as wrong as it may be Rich Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 12, 2019 Author Share Posted January 12, 2019 Like it Rich! Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 12, 2019 Author Share Posted January 12, 2019 Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 12, 2019 Author Share Posted January 12, 2019 Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 12, 2019 Author Share Posted January 12, 2019 Some low tech decoration using permanent marker and several highlighters... Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 12, 2019 Share Posted January 12, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Nigel R Posted January 12, 2019 Author Share Posted January 12, 2019 Some neat work as always there dave. I like the pushrod guides. Definitely a more involved build but almost anything would be longer than mine! Servo position in mine was set by the pushrods I had to hand - 12" welding filler rods. I guess I could join two together somehow. I left the nose section deliberately long so I could get balance easily enough. It has worked ok but I would imagine your method removes jusr a little more structure. Where do you source the carbon rod? Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 12, 2019 Share Posted January 12, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Don Fry Posted January 12, 2019 Share Posted January 12, 2019 David, is the motor mount just plugged onto the carbon spine, with a (filled epoxy?) load spreading ( balsa?) cone? Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 12, 2019 Share Posted January 12, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 12, 2019 Share Posted January 12, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Don Fry Posted January 12, 2019 Share Posted January 12, 2019 Thank you David, got the concept. Thank you for the carbon fibre website. I had lost the address, they are good, and they do epoxy colours, just the job for a epoxy skinned aircraft, to get a weight free base colour. Query, if you stuff an epoxy coated balsa core, in a protruded tube, would that not improve rotational stability to stress fracture. Edit, for a fee, my whippets like mice for breakfast. Small high speed bits of fun, the mice, not the whippets. Edited By Don Fry on 12/01/2019 19:30:34 Quote Link to comment Share on other sites More sharing options...
kc Posted January 12, 2019 Share Posted January 12, 2019 As usual David Mellor's somewhat different construction technique is worth studying and gives food for thought. Some months ago David suggested the HK Donkey ST3511/810kv was a good buy so I bought several. I am tempted to make a Nutball after reading this thread. So what size Nutball would suit this motor David? Quote Link to comment Share on other sites More sharing options...
kc Posted January 12, 2019 Share Posted January 12, 2019 Many aeromodellers give their wife reasons why they need a new plane but saying mice have eaten the tyres is a new one! Baiting a mousetrap with the remaining tyre might be worthwhile............. Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 12, 2019 Share Posted January 12, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 12, 2019 Share Posted January 12, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
kc Posted January 13, 2019 Share Posted January 13, 2019 Thanks David - at 40 inches that's bigger than I expected for the ST3511 motor. Presumably the laminations are 3mm, 5mm and 3mm the same as the 28inch? That carbon rod L/G looks just like a piano wire job with soldered joints - is it really carbon fibre? I am wondering how the angled tips are done on all these Nutballs - are they partially severed from the main wing and bent up or are they separate material just glued on? Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 13, 2019 Share Posted January 13, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
kc Posted January 13, 2019 Share Posted January 13, 2019 I see now - the 'spreader bar' seems to be the bit thats bent to go through the wheels rather than the 'legs' - very unusual to those of us brought up on David Boddington/ Vic Smeed/ Peter Miller designs! But that's the interesting thing about David Mellor's models and also Nutball style designs -they don't take the traditional construction as the accepted way to build but innovate using any available materials not not just balsa and piano wire. I particularly like the use of 1/64 ply in small pieces as reinforcement. Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 13, 2019 Share Posted January 13, 2019 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Roger T Posted January 9, 2023 Share Posted January 9, 2023 Just revisited the Nutball design for our winter indoor season. Results: 10" diameter 'Pizza': (Vapor/Ember electronics and motor unit on a 1S LiPo, with rudder/elevator control {don't worry, the pushrods are now connected using heat shrink!}. 3mm Depron construction throughout, including the 'pepperoni' wheels (with clear yoghurt pot plastic covers that provide axle bearings. Felt tip pen decorated. AUW 24gms) ...and 16" diameter 'No Fly Zone' (Brushless motor, Spektrum DSM caseless rx, 5gm servos, elevon control. 3mm Depron with 1 carbon fibre rod laterally at the 25% root chord, with Micropore tape reinforcement over that and the dihedral joints, hinges and around the perimeter to protect against 'wall rash'! Brushed acrylic paint scheme. AUW 88gms) The Pizza gets its maiden this coming Saturday at the St Albans MAC indoor meet in a local school basketball court sized gym hall. The No Fly Zone was maidened last mont (without paint scheme) and was an absolute hoot It shot across the floor and into the air then could be wrung out like a shockie, or flown in 4 foot diameter tightly banked circles in your face space. It's been re-propped (7" versus 6" ) to tame the speed and improve the hover. Roger T 2 1 Quote Link to comment Share on other sites More sharing options...
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