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| LASTWOODSMAN | SIG Cabinaire | Parked | 16-Jul-17 18:14 |  | | Views : 510 | | 2nd TIME FLYING - I exploded the rubber motor into a big twisted knot in the rear of the fuse, when I tried to wind it anyway, after I saw that one of the four strands of rubber was broken inside the fuse. DUH !! I tore up the rear fuse tissue badly - I sauntered home and repaired it. |
| LASTWOODSMAN | SIG Cabinaire | Parked | 16-Jul-17 18:07 |  | | Views : 516 | | 1st TIME FLYING - After a couple of cartwheeling landing flights, which probably cracked the "0ne-piece" stab/fin/rudder (that is only glued to the fuse in three tiny spots), I made a sloppy launch, where the stab caught my hand and tore off the whole stab/fin/rudder assembly! How EMBARASSING - there were people watching! LOL. The plane bravely tried to continue to fly, but rather unproductively and poorly .... I had to do another big "picture frame" repair on the other side of the stab now. |
| LASTWOODSMAN | SIG Cabinaire | Parked | 16-Jul-17 17:58 |  | | Views : 537 | | Well, yesterday, it seemed that I was determined to total my 22" SIG "Cabinaire". I went flying three different times yesterday, in strong winds and gusts, each time moping home, doing the repairs, and heading right back out - the last time, totally breaking the left wing ... OH NO !!! That is what I get for flying in strong winds and too many winds on the prop! |
| LASTWOODSMAN | SIG Cabinaire | Parked | 11-Jul-17 13:11 |  | | Views : 560 | | Because of the high humidity, the tissue covering on the plane eventually wilted to a very wet and saggy, wavy and droopy, airfoil, and was not able then to create ANY lift !!! - BUT - I got my longest flight yet, on the second try, of 56 SECONDS !!! , on 1050 winds of the rubber, using a 15:1 winder (70 turns on the crank), and a winding stooge, before it would eventually not even hold level flights any more when the tissue became so waterlogged! I am trying to break the one minute of flight threshold barrier! By the way, as soon as I brought that wilted, waterlogged tissue airplane, back into my air-conditioned apartment, where the hot moisture in the air had been taken away, the tissue MAGICALLY shrunk back to a "drum taught", perfect airfoil !! |
| LASTWOODSMAN | SIG Cabinaire | Parked | 11-Jul-17 13:07 |  | | Views : 320 | | LONGER MOTOR & TRIM TABS - Yesterday it rained pretty good all day long, and the sun came out in late afternoon, and was evaporating all of the water into the air = HIGH HUMIDITY. I took the 22" Sig "Cabinaire" out at twilight gloaming dusk, for some flights with a new, longer motor, of two, 20" long each, strands of 3/16" rubber (prop hook to rear motor peg is 13"). The plane had on the previous evening at dusk, been flying during "transition", after initial power burst, flying into quick descending, tight, steep-turn spiral dives, on the Right Hand circle flight. I tried to counteract this, by putting a small DOWN "tab", of file folder cardboard, scotch taped (it does not rip the tissue off when you pull off the tape), taped this tab, with a little downwards bend, onto the bottom trailing edge of the outward right wing, to raise the wing during flight, and another small LEFT "tab", with a little left bend in it, taped this tab to the left side of the rudder, to counteract the right turn a bit. It flew GREAT !!! |
| LASTWOODSMAN | SIG Cabinaire | Parked | 10-Jul-17 06:42 |  | | Views : 362 | | New tissue is covered over all the damaged area - back ready to fly!! |
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| LASTWOODSMAN | SIG Cabinaire | Parked | 10-Jul-17 06:40 |  | | Views : 258 | | I then used a couple of notch sanders to make notches to hold the three 1/16" sq forward fuse bottom stringers that were busted up and removed. One of the three stringers is in place. |
| LASTWOODSMAN | SIG Cabinaire | Parked | 10-Jul-17 06:38 |  | | Views : 293 | | The pic shows the clamping plates in position, and holding tight, the glued up support plate. I was able to get the jaws of two strong clamps inside the fuse opening to hold everything together. All glued up and clamped in place. |
| LASTWOODSMAN | SIG Cabinaire | Parked | 10-Jul-17 06:36 |  | | Views : 309 | | I was able to double white glue that chunk of balsa, that was ripped out from the bottom of the forward fuse former, right back into its spot ( it slid right back in - press fit! ). I then made a 1/16" thick, slightly smaller, 3/4 size support plate (with the rectangular cutout for the nose block), to glue in behind that forward fuse former bulkhead for additional strengthening. The pic shows the support plate (with inked lines), sitting in position inside the front fuse former. I also made two clamping plates (either side of the fuse) - one for the front of the fuse, and one for inside the fuse, to hold the support plate in place while the glue dries. |
| LASTWOODSMAN | SIG Cabinaire | Parked | 08-Jul-17 22:32 |  | | Views : 303 | | The plane flew close enough for the flash to light it up. Much more experimentation is needed ... |
| LASTWOODSMAN | SIG Cabinaire | Parked | 08-Jul-17 22:29 |  | | Views : 283 | | My try at full moon night flight photography - looks like UFOs ... |
| LASTWOODSMAN | SIG Cabinaire | Parked | 08-Jul-17 18:58 |  | | Views : 291 | | I just tried using bigger rubber and I reduced the number of rubber strands, on my 22" Cabinaire, with great results. Instead of 4 strands of 1/8" rubber, each strand 13" long (the prop hook to rear motor peg length on the plan was 13"), which gave consistent 25 second flights, I then instead went to 2 strands of 3/16" rubber, each strand 15" long. I could really stretch the rubber very far out from the nose, using a winding stooge, and wound in 55 winds on my 15:1 winder which equals 825 turns on the rubber motor, and got my record, much slower, beautiful turning flight of 48 seconds!! Tthen I got greedy and wound 70 turns on the winder for 1050 turns, and when I put the nose plug on - the Rubber Motor BLEW UP !!! Tissue damage all over the rear end, and a big chunk (sitting on my glasses case), of the foreward fuse former, busted out, along with the bottom fuse forward nose stringers busted !! |
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