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Post by Laca on Oct 28, 2011 9:48:15 GMT 1
J made wings with combination balsa+isofloor. Isooflor is materijal lighter then depron or stirodur. My big wings, with that combination 600mm x 110mm, weight 5grams.
Table "Isofloor" placed below the floor laminate.
Spec. weight 50gr/dm3 lighter then balsa. Isofloor have one problem, not elastic. This is death materijal, but not work, no flater.
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Post by bbjurek on Oct 28, 2011 10:12:42 GMT 1
you're right with isofloor, but my best time (in training) is 43s - with model DK-29, with balsa-styrodur wings, hala height ~10m
still trying, balsa flaps nicely composed on top and there is probably secret long flights, as you think?
ps: I have no plans to Polish models, only links to the competitions. I can tell you more if you want to e-mail.
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Post by Laca on Oct 28, 2011 10:30:32 GMT 1
Good result wih balsa and depron combination ! ;D
My e- mail: lacimiclazar@yahoo.com
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Post by martin on Oct 28, 2011 11:37:55 GMT 1
F1N is probably more popular in the Balkans than in Poland (the watch list of startup). The competition is, especially for children and Polish cup too. Im big fan of F1N (crazy . In Croatia, F1N is forced among the children, Damir Kosir is for. ex. head aeromodelling instructor at CTK Zaprešić (Youth Tech Club). If you look our competition reports carefully you might also notice derived category F1N-150 (150mm wing span, catapult launch) which is invented in Croatia expecialy for Tech Clubs and competitions in schools. The network of school sections and CTKs in Croatia is big enogh to "produce" 150 participants on F1N National Championship of which about 120 are juniors selected from a "pool" of about 500 - 600! Nice job for a 4 million people country! In my AC I lead a "F1N workshop" for beginners. We had abut 25 "students" so far of which 10 - 15 are regulary compeeting. Here in Serbia F1N is currently more like "yet another fun for veterans" and so far nobody except us tried to have a group of that size, but I hope it will happend in the near future. You know it could be because "Wasting time with kids" can seriously ruin the personal results of the instructor - I don't know about the others but that happends to me all the time martin.grubic@yahoo.com
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Post by bbjurek on Oct 28, 2011 11:55:31 GMT 1
You know it could be because "Wasting time with kids" can seriously ruin the personal results of the instructor - I don't know about the others but that happends to me all the time I know how it Jurek email: bbjurek@poczta.onet.pl
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Post by Boca on Oct 28, 2011 12:08:22 GMT 1
Jurek, please send us, some Polish sites or forums about categorises F1N and F1E.
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Post by bbjurek on Oct 28, 2011 12:24:56 GMT 1
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Post by Laca on Oct 30, 2011 12:55:17 GMT 1
Ovaj topic je za kratko vreme (za 2 dana) doziveo preko 400 poseta. Veoma je bilo interesantno ukljucenje i razmena iskustva sa nasim starim forumasom iz Poljske "bbjurek"-om, koji se intezivno i veoma studiozno bavi F1N klizacima. Jurek, we would like to know more about your F1N construction and something about adjust flight.
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Post by bbjurek on Oct 31, 2011 8:34:23 GMT 1
Thank You, Laca I'm modeller for a long time but F1N is the beginning for me - My model is a model DK-29 maestro Dlaki. I build several versions, balsa, balsa-depron, balsa - izofloor. Within a year I made them about 40. Hull as in Dlaka, carbon tube 2/1mm, tail too. The important difference is the weight. My gliders weigh 8-8.5 g. Very hard to train, a once a week, spring, summer, autumn, winter - Overall, I described my work with F1N. If you want to ask about the details, I will try to answer. PS: Yesterday, my pupil (11 years) won the competition, reached 105.5 s. - greetings to all in this forum
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Post by Laca on Oct 31, 2011 15:17:28 GMT 1
Jurek, and we are in a similar situation as you. F1N fly 2 years, and what attracted us to this category and stage attractive. Category for young and old and an excellent introduction to modeling. For the last two years I made about 30 gliders a most attracted me was the combination of Balsa-Isoflor. My models are somewhat smaller (600-540mm) and the weight is from 8 to 6 grams. In addition F1N at our events and categories represented F1N-150. These are glider range up to 150 mm and throw the ruber. As a member of our forums, but all that you known. I am interested in your technique trimm model?
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Post by bbjurek on Oct 31, 2011 18:37:39 GMT 1
Talking about the wings of balsa-isofloor First, of course, be weighed 49 mm in DK29 from attack Flaps bend some 4-5 mm, not more and let go a little and look like flies. model usually is pumping, so make a little plasticine but not too much (center of mass of about 45%). I try to get a nice free flight, also bend to the right vertical stabilizer (my models revolve to the right) Then I throw harder and more steeply, and look what happens. if the model does not compensate for slight bend at the top right flap down (left unchanged), sometimes the tip of the horizontal stabilizer to get the correct passage. This requires some time, some models fly at once, some do not want to fly, then I change the tail or wing pasting from scratch. With some models, it is not easy:) I do not know if I understand well, my English is rather weak Jurek
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Post by Laca on Nov 1, 2011 11:07:42 GMT 1
Jurek, we trim is identical, except that my models fly to left. If you notice that the model is critical, the top coat tail trailing edge, glue and acetone rare so by increasing differences of angles. End of tail is slightly bent upward. Then, it must be added a little ballast. If it does not fly, change tail.
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Post by bbjurek on Nov 1, 2011 11:42:20 GMT 1
Sometimes it helps to tilt down the right wing tip (for circulation to the right) to do a better goat. (we say 'fikn±³'). I throw out quite steeply, some models are flying from the beginning well, some do not want to fly. Sometimes, the only fly as flaps are bent differently (one more second less) You throw a lot to learn it all.
Where you have the center of mass, 45%?
Jurek
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Post by Laca on Nov 1, 2011 11:54:32 GMT 1
I throw the model straight at an angle of 45 degrees. It is not the same for all models. Some throw more or less to the left, depending on model. Although my throwing technique is not good as Dlaka. My best flight was 40 seconds in training with the model of "Darkness", which I have just restated. (before restated)
My center of mass iz 40-45%
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Post by doajen on Nov 1, 2011 19:20:34 GMT 1
I ja Vama!
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