Torsten Spitzner Posted September 9, 2020 Author Share Posted September 9, 2020 This was the making of the first parachute. Much the same procedure as the refuse bag one but I had to buy a sewing machine an learn how to sew therewith. Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 9, 2020 Author Share Posted September 9, 2020 The second chute a and the final one were test dropped off a 60 size stick. The pilot had his hands full with 750 grammes added well behind the planes CG....and then suddenly be removed again... These tests revealed that the second chutes material was too heavy. The third chutes material was then lighter and works perfectly. My little camera recorded the drops. Not to mention the roller coaster ride to altitude.. Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 9, 2020 Author Share Posted September 9, 2020 The making of the final parachute. Not perfectly sewn together, its really difficult to get all the gores to lign up perfectly. But it works. This little toy skydver was implemented as the pilot chute. Ordered from Banggood. And that is the little 4 channel RX... Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 9, 2020 Author Share Posted September 9, 2020 Measuring the lines lengths. They are slightly stretchy, which didn't help... All done. All the lines attached and rolled up so as not to get tangled. Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 9, 2020 Author Share Posted September 9, 2020 Once the lines had been threaded through the sleeves and cut to the correct lengths they were sewn onto the parachute material at the outside edges so that the parachute would not be able to slide up the lines. Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 9, 2020 Author Share Posted September 9, 2020 The arms are shaped balsa. They may have thin ply glued onto the rear, I do not remember. I had forgotten to make attachment points for the steering lines on the hands. These were made from brass sheet Brass sheet is pinned and glued in place The brass attachment plate is covered with a little balsa and shaped. Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 9, 2020 Author Share Posted September 9, 2020 Balsa infill on the leg mounting The leg mounting done. Brass tube bearing for the leg axles to rotate on Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 9, 2020 Author Share Posted September 9, 2020 The legs are shaped balsa. The thighs, calves and feet are shaped seperately and then glued together at the knees and ankles. The upper legs were hollowed out a little. Upper legs done. A piano wire shaft gets epoxied into each upper leg later on. Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 9, 2020 Author Share Posted September 9, 2020 The legs are just lots of shaping, fitting, shaping.... Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 9, 2020 Author Share Posted September 9, 2020 The front cover is balsa sheet. I was concerned about the strength thereof so I glassed the inside. The 'bump' on the cover is what would be the real skydivers reserve parachute. The plans call for this to be hollowed out so that the batt. pack can be fitted inside but I found this space to be far too small. I ended up epoxying some lead into the hollow. Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 9, 2020 Author Share Posted September 9, 2020 These are the arm mounting blocks. Two on each side, the arms fitting in between. The arm mountings are shaped balsa blocks. I faced them with 0.6mm ply on the insides. . Brass tubes were epoxied into the arms as horns. There are small pieces of 0.6mm ply glued onto the arms where they will move. Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 9, 2020 Author Share Posted September 9, 2020 Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 20, 2020 Author Share Posted September 20, 2020 Shaping of the head wassome more sanding of a bals block. The nose was a piece of ply glued into a slot in the head. A small piece ow hardwood dowel helps anchor the head to the torso. Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 20, 2020 Author Share Posted September 20, 2020 Painting was completed before the radio gear was installed. Brush and whatever paint was at hand, with rattle can clear coat over the top. Hardwood dowels were glued into the ankle as securing point for the elastic band hooks Quote Link to comment Share on other sites More sharing options...
Torsten Spitzner Posted September 20, 2020 Author Share Posted September 20, 2020 Getting the servos and linkages to fit without binding was frustrating. In the end, I bought low profile servos and even so, lots of fiddling and bending pushrods until it all worked. My next jumber will be larger and I will take the radio gear into consideration from the beginning. Quote Link to comment Share on other sites More sharing options...
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