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Post by Laca on Oct 27, 2011 11:00:16 GMT 1
"Mrak" je moj prvi model koji je bio laksi od 7 grama.
Izvorno, model je bio raspona 560mm i dubine krila 100mm, uradjen od izuzetno lagane balze 76 gr/dm3
Preziveo je svasta i dosao je red na njegovu reparaciju.
Na red su dosla krila koja su od lepka bila teska preko 4,5 grama.
Smirglanje i aceton su pomogli da tezina krila sidje ispod 4 gr.
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Post by Laca on Oct 27, 2011 11:01:52 GMT 1
Ispod Pancevackog mosta sam pronasao onaj Korejanski vrh i trup je, posle smiglanja, izasao ispod 1,3gr.
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Post by Laca on Oct 27, 2011 11:03:20 GMT 1
Rep i parasol su teski 0,32 grama a u nos trupa ubacujem pecarosko cilindricno olovo od 0,35gr.
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Post by Laca on Oct 27, 2011 11:04:55 GMT 1
Na karbonski trup lepim horizontalac i vertikalac sa prepustom od 8mm.
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Post by Laca on Oct 27, 2011 11:05:42 GMT 1
Zatim za krila lepim parasol
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Post by Laca on Oct 27, 2011 11:07:43 GMT 1
Sa lepljivom trakom lepim parasol za trup i pomeram krila sve dok se model ne uplanira. Tek onda sa cijanom lepim parasol za trup.
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Post by Laca on Oct 27, 2011 11:12:57 GMT 1
Rezultat reparacije je "Mrak" tezak 5,88 grama. Poluga je 185mm. Da sam stavio 0,5 gr olova, verovatno bi poluga bila preko 200mm. Krila 3,98 gr Trup 1,28 gr Rep + parasol 0,32 gr Balast 0,35 gr ___________ Ukupno 5,91 gr. Kako je model laksi, ne znam, ali ni ove Kineske vage ne rade bas tacno u stotu.  |
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Post by Laca on Oct 27, 2011 15:06:55 GMT 1
U izvornoj verziji "Mrak" je imao dubinu krila 100mm a raspon 560mm, medjutim kako su se krila krzala, dubina se smanjivala, da bi posle reparacije dosli na 95mm a raspon 540mm.
U prvoj verziji je bio tezak 6,95 gr, a sada posle reparacije, 5,88 grama. Mozda je povrsina malo manja ali je tezina takodje smanjena za vise od 1 gr.
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Post by bbjurek on Oct 28, 2011 8:02:05 GMT 1
"Mrak" ....Smirglanje i aceton su pomogli da tezina krila sidje ispod 4 gr. Dear Laca, could you explain to me how to reduce the weight of the wings with aceton? bbjurek |
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Post by Laca on Oct 28, 2011 8:25:50 GMT 1
Dear bbjurek, "Mrak"-Darkness is not a big model, wingspan 540mm and width 95mm wing shord. Flaps made of 1mm balsa, which is often broke. Flaps are hardened glue from acetone. I decided to glue off with acetone. Most glue was in the combination of flaps and front wings. Part glue remove the adhesive sanding. A lot of glue was at the junction of the wing and parasole. Cyanoacrylate glue is not easy and it was too much in this connection. Maybe Google translator is not all translated ?  |
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Post by bbjurek on Oct 28, 2011 8:39:07 GMT 1
no problem, i understand I'm from Poland and i understand serbian language (with translator sometimes). But I can not understand how he does such a maestro Dlask light models -  and I'm looking for a way. It is one of my DK-29, not ready yet bbjurek |
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Post by Laca on Oct 28, 2011 9:04:00 GMT 1
Me also a mystical weight to the Dlaka to achieve such a large model. 4 grams, wing 630mm to 110mm ? That wings must be 5 grams. Very nice model |
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Post by bbjurek on Oct 28, 2011 9:23:35 GMT 1
That wings must be 5 grams. so here is a mystery This weight is to be done but the thickness profile must be 1.5-2mm and not 3 as on the plans, still trying to |
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Post by Laca on Oct 28, 2011 9:27:23 GMT 1
How much weight your wings ?
I saw аt youtube that the F1N very popular in Poland.
Do you have some Poland links ?
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Post by bbjurek on Oct 28, 2011 9:42:39 GMT 1
complete wings with balsa and carbon 5.7 - 6.5 g balsa + styrodur (depron) < 6g, thickness of the profile near the hull is <2 mm and the ears - thinly bat balsa wings are better (senior DK knows what he's doing) 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  . |
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and I'm looking for a way.
.