Terence Lynock Posted March 26, 2009 Share Posted March 26, 2009 Decided to build this one in among other projects to take on holiday for a bit of fun with my two year old grandson, Almost finished the construction mainly from blue foam sheet and pink block and some Depron where needed. Looking at the plan I am wondering what would happen if I used elevons instead of the two piece elevator, I have used a snake for the rudder and thats fine but had the idea of burying two micro servos in the sides of the body with a mixer, would it work?, regards, Terry Quote Link to comment Share on other sites More sharing options...
Glenn Sykes Posted March 27, 2009 Share Posted March 27, 2009 Hi terence, I am half way through building mine. I also had the idea of elevons and not bother with the rudder. If you do try it before I get time to finish mine can you let me know how it goes. I will post as soon as I try it. Quote Link to comment Share on other sites More sharing options...
Terence Lynock Posted March 28, 2009 Author Share Posted March 28, 2009 Hi Glenn, took a chance on it and fitted two servos in the sides of the body up against the wing, added a piece of foam just forward of the servos to give them a little protection and faired these into the body sides. By fitting the servos outside of the body you get a clean run to the elevons and you have more space for the RX and other bits, when I fitted the head I didnt use a carbon rod as per plans. I used a 1/2'' bore length of carbon graphite fishing rod and opened the mouth by cutting some of the foam away each side, this allows air into the mouth and down the tube to the body cavity for cooling the ESC and RX. When I opened the mouth up I left a wall of foam down the middle of the mouth to support the lower jaw and only cut right through to the other side at the back so air could get to the tube. Still have a ways to go but it is coming along, regards, Terry Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted March 28, 2009 Share Posted March 28, 2009 Lets have some pictures guys Quote Link to comment Share on other sites More sharing options...
Glenn Sykes Posted March 28, 2009 Share Posted March 28, 2009 First stages. I have since decided to make some changes and make the top depron layer the same as the lower. Quote Link to comment Share on other sites More sharing options...
Terence Lynock Posted March 28, 2009 Author Share Posted March 28, 2009 Not sure about duplicating the lower layer for the upper, will this destroy the aerofoil section of the wing?, the shape with just the one leading edge piece is simular to a Jedelsky wing section and should be good for gliding and stability, regards, Terry Quote Link to comment Share on other sites More sharing options...
Terence Lynock Posted March 29, 2009 Author Share Posted March 29, 2009 Lets have some pictures guys Hi Tim, problem is with this new website it takes too much time to do, firast I have to take the photo then load it to my computer, then call it up in Photoshop and resize it cause it will be too big to be accepted. Then I have to come on line and load it to my photo album before I can call it up for this thread, its all a lot of hassle and twice as much as we used to have, all I did then was load it via Photoshop and resize and call it up direct into the thread. Presently getting to know my Aztek airbrush again which hasnt been used in years, it was (is) the top of the line 470 in the fancy wooden box won in a model shipbuilding competition in the U.S, I also have a few spare nozzles of different sizes and frightened myself when I priced them the other night at eight quid each!. Anyways I am presently giving mine a coat of paint before fitting out all the lecky stuff then the elevons to link up, if we have a decent day sometime next week I will pop over the field with it ( 'my' field near my house not the club field), regards, Terry Quote Link to comment Share on other sites More sharing options...
Glenn Sykes Posted March 29, 2009 Share Posted March 29, 2009 Never got time today to work on. Spent all morning flying then had to take the mrs out. Hoping to finish some time in the week. Going to finish, test fly then paint (if it flys ok). regards, Glenn Quote Link to comment Share on other sites More sharing options...
Terence Lynock Posted March 30, 2009 Author Share Posted March 30, 2009 Well, almost ready for its big debut as soon as I am happy it is right, the teeth dont fit too well but what can you expect off the National Health these days?...... Regards, Terry P.S will trim teef to size as soon as glue dries. Quote Link to comment Share on other sites More sharing options...
Glenn Sykes Posted March 30, 2009 Share Posted March 30, 2009 Looking good Terry. You are well infront of me. Im going to see if mine flys before I spend hours painting. Ive put another couple of photos in my album for anyone to view. What size prop did you put on, I was thinking of something like a 7x6, would have liked an 8 but its just to big. Kind regards, Glenn Quote Link to comment Share on other sites More sharing options...
Terence Lynock Posted March 30, 2009 Author Share Posted March 30, 2009 The prop is a APC clone 7'' cut down to 6'' that just happened to be in my box left over from some other project, I am using a C20 motor about 80w that should provide enough push if not I will change it for a 2822 or 2812, regards, Terry Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted March 30, 2009 Share Posted March 30, 2009 Looks great Terence ! Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted March 31, 2009 Share Posted March 31, 2009 Like it Terry Quote Link to comment Share on other sites More sharing options...
Terence Lynock Posted March 31, 2009 Author Share Posted March 31, 2009 I made the skull a bit narrower at 40mm and the jaws a bit longer, the eyes are a spare pair from when we made a special one-off teddy bear for a Downes Syndrome daughter of a friend and we bought two pairs at different sizes so had these left over. The paint job was one coat of thinned PVA and then sanded before a coat of Burnt Umber and a light overspray of thinned Yellow Oxide acrylics, the green, grey and deep blue stripes are acrylic artists paint and reds are Chrimson Lake rubbed in with a finger tip before an all-over coat of clear acrylic spray to finish it off. It will probably end up about 75g overweight as I used 1/2'' carbon graphite tube instead of the 3mm carbon rod in the neck, air can now flow into the mouth and down the tube to cool the ESC etc, another smaller carbon graphite tube runs from the body cavity all the way back to the tip of the rudder, regards, Terry Quote Link to comment Share on other sites More sharing options...
Glenn Sykes Posted March 31, 2009 Share Posted March 31, 2009 Mine is finished other than painting and I think I will change the servos. I fitted st-5's but going to change to st-9's. What weight has yours come out at Terry. Mine all in with a 3 cell 950 lipo, receiver etc is 390g, not sure how much the paint will add. Glenn Quote Link to comment Share on other sites More sharing options...
Glenn Sykes Posted April 2, 2009 Share Posted April 2, 2009 Going for the maiden tomorrow. Quote Link to comment Share on other sites More sharing options...
Terence Lynock Posted April 2, 2009 Author Share Posted April 2, 2009 Having problems right now with Sciatica I cant even sit at my bench to work so everything is on hold,I just caugfht it wrong last night and twisted sideways to pick something up off the bench and that was it, took me a good two minutes to get out of the chair and go into the other room. Had this problem for many years and it will be a few days before it lets me sit for any length of time so in the meantime I am sat propped up with a couple of cushions bored stiff, beautiful weather and a nice breeze from the S.W, a big hill just over the field and where am I?.......... regards, Terry Quote Link to comment Share on other sites More sharing options...
Glenn Sykes Posted April 3, 2009 Share Posted April 3, 2009 Tried with the maiden today, never went to well. After about thirty yards nose dived into the ground. Not much damage, just one elivon horn broke off. A combination of a high thrust line (pushing the nose down) and although the CG was ok to the plan (Id added some weight to the nose) I think it needs to be further back to counter act the thrust line. Anyone any Ideas Going to try again tomorrow or Sunday. Glenn Quote Link to comment Share on other sites More sharing options...
Marcos Piazzon Posted April 3, 2009 Share Posted April 3, 2009 It looks awesome!! can anyone share the plans with me? My e-mail adress is [email protected] best regards Marcos Edited By Marcos Piazzon on 03/04/2009 21:05:37 Edited By Marcos Piazzon on 03/04/2009 21:05:55 Quote Link to comment Share on other sites More sharing options...
Glenn Sykes Posted April 3, 2009 Share Posted April 3, 2009 Its free in this months RCM&E Glenn Quote Link to comment Share on other sites More sharing options...
Marcos Piazzon Posted April 3, 2009 Share Posted April 3, 2009 Thanks glenn I Know that but I´m from Argentina an this publication it´s not available here. Best regards Marcos Quote Link to comment Share on other sites More sharing options...
Clark Ross Posted April 3, 2009 Share Posted April 3, 2009 mine is done but looks like i am going to have to add a lot of weight to get it to balance. i put the hatch on top to make it easier to get at clark Quote Link to comment Share on other sites More sharing options...
Jeremy Stubbings Posted April 3, 2009 Share Posted April 3, 2009 terry thats great did you air brush the dactyl am contemplating building one with sound effects.some one flew one similar from the hill above lyme regis with sound and caused quite a stir . Quote Link to comment Share on other sites More sharing options...
Terence Lynock Posted April 4, 2009 Author Share Posted April 4, 2009 H Jeremy, the basic brown and grey were brushed on but then I used an airbrush to finish off the colour scheme with the green and a thin coat of thinned yellow ochre over the brown first, you can get some nice effects using artists acrylic. You can get small bottles of 'Inscribe' brand paint for about a quid each, they sell them on eBay but by the time you pay the P&P is is very uneconomical, better to pop down the local art shop and see what they have. To get some shape into the face just rub a little colour into the eye area and so on with a finger tip, this feathers the colour around the edges and blends it into the main colour, regards, Terry Quote Link to comment Share on other sites More sharing options...
Terence Lynock Posted April 8, 2009 Author Share Posted April 8, 2009 Hi Folks, has anyone managed to do any more building or flying with this one lately?, just wondering how your getting on with it, regards, Terry Quote Link to comment Share on other sites More sharing options...
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