Image Comments |
LASTWOODSMAN | 08-Jul-17 18:58 | 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 !! |
mlriley540 | 08-Jul-17 19:46 | Pilot OK? |
LASTWOODSMAN | 08-Jul-17 22:25 | Pilot is OK - the rubber was a big wound knot in the back of the fuse - only the fuse tissue was ripped badly - I could not even find the "S" hook from the rubber to the prop hook. All repaired now - I just took it out for some full moon flights, 45 min after the full moon rose at 8:43 PM - got several 30 second perfect circling flights on 4 strands of 1/8" rubber, each strand 12" long,(prop hook to rear motor peg is 13"), on 645 winds - tried to take pics, but they did not work ... just one sort of did. |
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