Peter Miller Posted November 26, 2016 Share Posted November 26, 2016 I imagine that you are planning on flying very slowly. Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted November 26, 2016 Author Share Posted November 26, 2016 Thanks for the kind words. Late last night I tested the aileron with a servo tester. All seems to work smoothly although putting the top wing skin on will need some careful fitting. Now I can start the fuselage which should be fairly straightforward - as long as I can resist the temptation to put in a retractable tail wheel! Edited By Simon Chaddock on 26/11/2016 11:13:49 Quote Link to comment Share on other sites More sharing options...
barry knight Posted November 26, 2016 Share Posted November 26, 2016 Liking your work. Thinking of seing Depron for some parts in my build. Can you use Cyno on it? Loving the direct drive Aileron. Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted November 26, 2016 Share Posted November 26, 2016 Well Simon, I just fear you couldn't sleep correctly anymore with a non retractable tail wheel... and 'steerable' of course. Cheers Chris Quote Link to comment Share on other sites More sharing options...
Colin Leighfield Posted November 26, 2016 Share Posted November 26, 2016 If you do a naval version you can fit a working arrester-hook. Don't forget the pilot and working ejector seat as well. Someone's got to fly it. Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted November 26, 2016 Share Posted November 26, 2016 Don't listen to Colin, Simon. Please forget the hook and ejection stuff & just keep the pilot... A pair of foam floats would be 'magnificent' on your Deprallerina ... splendid model though. Cheers Chris Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted November 27, 2016 Author Share Posted November 27, 2016 barry You can only use foam safe Cyano on Depron and even then its best to check check on a scrap piece of Depron first! Chirs As I fly from grass a steerable tail wheel is not very effective. You have to use so much power to get the plane to move the tail wheel is not doing much, if anything, anyway. Just use lots of rudder! Colin Pilot? Na! I am the pilot and I am standing on the ground so the cockpit is empty. The RH wing complete 'ready to go'. It weighs 3.4 oz (97 g). Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted November 28, 2016 Author Share Posted November 28, 2016 Made a start on the fuselage. It follows the original pretty closely except it is all made of 3 mm Depron! The extra wing root chord due to the retracts has required an additional former F2a. F3 and F5 are also full depth to give additional support to the Depron side panels. Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted November 30, 2016 Author Share Posted November 30, 2016 As I did with the main retracts I need a test fuselage to try out the linkage so a duplicate fuselage tail section. Just the last two formers and made up from scrap and recycled 3 mm Depron. If and when I can get it to work I hopefully will be able to transfer all the components directly into the actual fuselage. Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted November 30, 2016 Author Share Posted November 30, 2016 The 1200 Emax 2822, 9x6 SF prop and the 47 mm spinner. Exactly the same as I am using on the Petiterina and with a bit of 'fitting' it all goes together neatly except the spinner cut outs are rather too big for a 9x6 SF prop. But this quite normal way of mounting a prop on an outrunner does rather offend my engineering instincts with a long overhang from the front bearing and a high mechanical 'leverage' on the motor mounting bolts. Although not a serious consideration for use in the Ballerina I note the motor would actually fit inside the profile of the spinner. It would require the prop to use individual inserted blades but it would mean the whole motor/prop assembly would simply screw on to the very nose of the fuselage and from an engineering point of view it also means the motor bearings would in effect be 'straddling' the rotating mass. Enough dreaming! - back to a retractable tail wheel. Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted December 1, 2016 Author Share Posted December 1, 2016 A possible retractable tail wheel arrangement on the Ballerina 'test piece' fuselage. It uses a 3.7g servo with an 'over centre' linkage. The whole assembly including the servo and wheel weighs 16 g. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted December 1, 2016 Share Posted December 1, 2016 Interesting. I don't think I will be converting mine though!! Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted December 2, 2016 Author Share Posted December 2, 2016 The 'test' set up seemed to function well enough and it was certainly light so I decided to go ahead and fit the same system to the Depron Ballerina. The actual installation had to be 'tidied up' a bit to make sure there was space for the elevator and rudder servos that will also be right at the tail. An usual view looking down what will be the underside of the fuselage at the tail wheel retract in operation. I need to get the wing halves joined to sort out the wing retaining bolts. Edited By Simon Chaddock on 02/12/2016 00:39:55 Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted December 4, 2016 Author Share Posted December 4, 2016 With the wing halves joined at last there is some visible progress. Only balancing but it gives a first view of the effect of the retracts. As I hoped the overall impact is quite modest. Wing bolts next. Quote Link to comment Share on other sites More sharing options...
Colin Leighfield Posted December 4, 2016 Share Posted December 4, 2016 It all looks really promising Simon. The tail wheel retract idea is very neat. The approach to the wheels up position is very North American, like the Harvard and P51, solves some of the fiddly questions about pintle angles etc. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted December 4, 2016 Share Posted December 4, 2016 tvreminds me of another of my future projects, The Pilatus P-2. Oh, Don't hold your breath for that one. Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted December 4, 2016 Author Share Posted December 4, 2016 Peter Yes similar to the Pilatus P-2 and probably for the same sort of reasons! I know it had an air cooled V12 but you have to admit the nose treatment is.......ugly! Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted December 4, 2016 Share Posted December 4, 2016 Spinner looks good though Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted December 5, 2016 Share Posted December 5, 2016 It may be ugly but you can hide any engine in that cowl. and the cockpit is easy to make. Edited By Peter Miller on 05/12/2016 08:27:53 Quote Link to comment Share on other sites More sharing options...
Colin Leighfield Posted December 5, 2016 Share Posted December 5, 2016 After the stunning curves of "Destiny", the Pilatus P2 sounds like some form of adverse psychological reaction, although I admit that it has pretty good proportions for a model. Beauty is in the eye of the beholder? Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted December 5, 2016 Share Posted December 5, 2016 Beautiful it is NOT. .Actually after Destiny I am not sure and it has gone down the "To build" list Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted December 5, 2016 Share Posted December 5, 2016 ... ooh, that's great news then, Peter. So, the Stampe SR.7 is back up the list then??? Cheers Chris Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted December 5, 2016 Share Posted December 5, 2016 Somewhere on the list. It is a long list and so many people keep wantng me to add to it. Not just here on the forum Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted December 5, 2016 Author Share Posted December 5, 2016 With the wing bolts in it can stand on its wheels. But now comes the 'school boy' error. I did not check that the tail servo worked in the same sense as the mains so one is up when the other is down. Doh! There was a 50/50 chance it would be right. However it should only need a bit of careful surgery to swap the tail servo over left to right. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted December 6, 2016 Share Posted December 6, 2016 Or how about a servo reversing Y lead? Quote Link to comment Share on other sites More sharing options...
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