Devcon1 Posted April 2, 2014 Author Share Posted April 2, 2014 Good plan. I hope the same theory doesn't works for the plane as my free plan is shredded . Quote Link to comment Share on other sites More sharing options...
Chris Barlow Posted April 2, 2014 Share Posted April 2, 2014 Liking the windscreen John! I struggled with deciding what to do with mine since most similar planes of a vintage era didn't really have one. I think I only went with the brass hoop style because of all the brass up front. Your Spit looks awesome too! I would have a field day with that and my macro lens! (wow there's a camera smiley! Quote Link to comment Share on other sites More sharing options...
Devcon1 Posted April 3, 2014 Author Share Posted April 3, 2014 Thanks Chris, I'll have a play with the macro under daylight conditions as I couldn't get the focus on the interior properly. Phil, It's taken me all night, nearly, to shape 4 pieces of balsa to fit, I'd be here all night trying to make patterns. It's a bit like earlier in the pub tonight, I had a full round of drinks on the bar and the barman asked if I wanted a tray, I said you must be joking I've got enough to carry already thanks. The gaps between the frame and cowling will disappear when it's glued into position. John Quote Link to comment Share on other sites More sharing options...
Devcon1 Posted April 4, 2014 Author Share Posted April 4, 2014 Couldn't resist so had a quick fly this morning.>> it was about 7.30 and flat calm. Very very pleased with it.>> Take off was straight as a die with no rudder needed, it slowly raised it's tail and took off in a very scale manner.>> Loops are terrific with everything happening slowly. landings are great fun. With all the open structure and draggy bits it makes a lovely noise and soon reached it's terminal velocity regardless of what you do with throttle and elevator. Power is perfect and just right for the model, it won't prop hang anytime soon. I do need to add some down thrust though. Weight as it stands at the moment is 925 grams. >> Now, I mentioned this on Kevin's build as the balance seems to be a talking point. So here are my thoughts. I've looked at the plan again and whilst I always thought it looked conservative I decided to get my calculator out. The plan COG is 48mm from the LE which gives a percentage value of 25% of the chord but the plan only shows the root chord and not the mean or majority of the wing chord which at its widest point is 230mm for most of the wing area. When you apply a 25% calculation to this you get a COG position of 57mm which may explain why some are having to add nose weight to achieve the plan position, also some prefer a more rearward COG possibly up to 33% of the Chord from the LE. giving even more flexibility on having to add weight. Have I missed anything or is my mathematics letting me down. Regards John Footnote, I flew this morning at a COG position at 30% of the chord measured at the widest point and I feel it needs to go back further but is a personal preference on how I prefer it, I've got space on the battery rack so will continue to experiment. Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted April 4, 2014 Share Posted April 4, 2014 Love the frame John will be stealing/copying that design unless I see something er at the club bring and show meet tonight The Maiden news is good then and encouraging for those following your build might just be tempted to put this lightweight design on my (ever increasing) todo list Quote Link to comment Share on other sites More sharing options...
Devcon1 Posted April 7, 2014 Author Share Posted April 7, 2014 Windscreen and exhaust done bar a bit of painting. Glazed with ex Toy packaging. Framed covered with aluminium tape as used on the cowl. Just needs a rub down with a plumbing greenie to match cowl and coat of Pledge to seal it all in. After a rub down. Plastic bent under heat and with bending spring to form bend. Stubs let into holes in main pipe. Test fit prior to painting, I'll put collars on the stubs just to finish them off. Regards John Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted April 7, 2014 Share Posted April 7, 2014 Very nice John makes my exhaust look a little amateurish, want some of those bending springs they've been on my wish list for far to long, and that windscreen looks very heinkel esque Quote Link to comment Share on other sites More sharing options...
Devcon1 Posted April 7, 2014 Author Share Posted April 7, 2014 Exhausts done. Exhaust painted in Tamiya acrylic Nato Black. John Quote Link to comment Share on other sites More sharing options...
Lindsay Todd Posted April 7, 2014 Share Posted April 7, 2014 Love it. Linds Quote Link to comment Share on other sites More sharing options...
Devcon1 Posted April 8, 2014 Author Share Posted April 8, 2014 Thanks Lindsay, I have to say I've enjoyed building this little beauty, I think the last time I built from scratch to a plan coincided with the launch of the ZX81 and the Lockheed F-117 made it's first flight. Cockpit coaming made from so,e Kavan Fuel Tube. Regards John Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted April 8, 2014 Share Posted April 8, 2014 Nice sir very nice indeed looking forward to seeing this one fly. Sunday mornings looking good, even better than last nights forecast, winds now down to 2mph most of the morning Quote Link to comment Share on other sites More sharing options...
Devcon1 Posted April 10, 2014 Author Share Posted April 10, 2014 On the home straight now.. I know I'll nose it over at some stage so have decided to think ahead, for a change, and build in some serviceability. The post that supports the wing rigging looks exposed so I have decided to use some Evergreen plastic interlocking tube to form a replaceable mast. The larger diameter tube has been set into the wing and decking with a reinforcing collar with the removable section being a simple friction fit held down by the tension of the rigging wires. The base tube will be sanded flush to the collar and painted in a contrasting finish. The mast will be painted in an aluminium colour. John Quote Link to comment Share on other sites More sharing options...
Devcon1 Posted April 10, 2014 Author Share Posted April 10, 2014 Wing rigging finished. only two jobs left, the fuel cap and cockpit seat/controls. Alloy tube pushed through wing and secured with a dot of Cyano on the top and bottom. Decided to strengthen with a dab of epoxy. Mast joint. Nearly there. Regards John Quote Link to comment Share on other sites More sharing options...
Devcon1 Posted April 10, 2014 Author Share Posted April 10, 2014 Fuselage with wings. John Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted April 10, 2014 Share Posted April 10, 2014 Hi John Somehow I've missed your build, getting old Looks different mate, like it very much Pilots got a shifty look about him though, not sure I trust him. Quote Link to comment Share on other sites More sharing options...
Plummet Posted April 11, 2014 Share Posted April 11, 2014 Posted by John Milne on 31/03/2014 20:14:14: <snip/> Barrels painted with a coat of silver Revell Acrylic then a coat of Revell charcoal black, (drying between coats, then the edges rubbed off with a sponge sanding pad to give a worn look. Rear mechanism sprayed with Tamiya metal paint then painted with a coat of Pledge Multi Surface wax and finished off with a wash of white spirit mixed with oil paint. Regards John Where do you get your interrupter gear for brushless? Plummet Quote Link to comment Share on other sites More sharing options...
Gary Manuel Posted April 11, 2014 Share Posted April 11, 2014 Unbelievable attention to detail. Wish I had your skill and patience. Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted April 11, 2014 Share Posted April 11, 2014 Posted by Gary Manuel on 11/04/2014 09:53:13: Unbelievable attention to detail.. This seems to have been a feature of this build and is lovely to see Maiden on sunday is it John ? Quote Link to comment Share on other sites More sharing options...
Devcon1 Posted April 11, 2014 Author Share Posted April 11, 2014 Thanks for your positive feedback guys. Plummet, the interupter is wireless I've not shot the prop off yet..John Quote Link to comment Share on other sites More sharing options...
Devcon1 Posted April 11, 2014 Author Share Posted April 11, 2014 Gary. I'm a slow builder so I just give myself one or two tasks every night. I spend about 90% thinking and 10% doing.John Quote Link to comment Share on other sites More sharing options...
Devcon1 Posted April 11, 2014 Author Share Posted April 11, 2014 John,Albert the pilot has an aire of nonchalance about him which I think comes from being an English WW1 fighter ace.RegardsJohn Quote Link to comment Share on other sites More sharing options...
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