Mais um Extra 300 em balsa- Voou bem, mas lenhou!!!

[The Borba]

Olá pessoal. Estou criando este tópico para compartilhar a minha segunda construção em balsa. Dessa vez é um Extra 300s, um aero que particularmente gosto muito, apesar de ter pilotado apenas no simulador. A inspiração veio através da construção de um desses, feita pelo Rafael Ritter aqui do fórum. A Planta está disponível neste site: http://www.profili2.com/eng/pre_download_plan.asp?Id=474
O motor indicado é um 46
A envergadura é de 1500 mm
O comprimento e de 1385 mm da ponta do spinner até o leme.

Estou com a fuzelagem e conjunto de estabilzadores toda montada, faltando apenas chegar a balsa pra começar o chapeamento e a construção da asa. Vou postar algumas fotos da construção até aqui e assim que chegar a madeiras darei sequencia na montagem e aí vou atualizandos as fotos. Aceito críticas, sugestões etc...

Planta gigantesca

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Montagem do conjunto de estabilizadores em tiras de balsa 8mm x 4,76.

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Aqui já montado e colado com cola cascorez pra madeira.

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Aqui alguma peça chapeada com um resto de balsa 1mm que tinha em casa
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Aqui os desenhos transferidos para a chapa de compensado 3mm.
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Aqui começando os recortes só no estilete, que trabalhão, quando dor na mãos.
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Ajudinha da serra-copo

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Uma idéia da quantidade de peças, isso que ainda falta muitas peças da asa.

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Fuzelagem
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Suporte do trem de pouso e compensado 3mm duplado.
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Berço do tanque e também parede de fogo.
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Por hoje é isso pessoal, assim que chegar a madeira continuo a construção e vou postando. Abraços a todos.

[The Borba]

Poxa, agora que vi que postei na seção errada. Moderadores por favor, se quiserem mover pra seção correta eu agradeço.

[The Borba]

Olá pessoal, ontem chegou as balsas e então aproveitei um pouco do feriado pra fazer alguma coisa no extra. Consegui chapear o resto dos estabilizadores e e
as laterais da fuzelagem. Falando em balsa, veio cada balsa ruim da tevel, uma boas e outras ruins no meio, muito crespa, preta, dura, algumas horríveis.
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Esse leme é grande pra caramba, vai dá pra fazer 3D legal :D :D

[RodMoro]

Muito boa sua construção... Continue assim. Mas lembre-se de reforçar bem a estrutura pois você disse que quer fazer 3D.
Acompanhando.

Abs. e bons vôos.

[The Borba]

[quote:d9923fecaf="RODMORO"]Muito boa sua construção... Continue assim. Mas lembre-se de reforçar bem a estrutura pois você disse que quer fazer 3D.
Acompanhando.

Abs. e bons vôos.[/quote:d9923fecaf]

Obrigado RODMORO. É, estou usando todos os reforços da planta e colando todo ele com cola amarela pra madeira. Devido as espessuras de balsa disponíveis tive que mudar um pouquinho da planta. Ex. Nervuras 2mm pela planta, vou fazer com 2,3mm, as de 3mm ficarão com 3,2 e assim as cavernas em balsa também. Somente o chapeamento superior que pede chapas de 2mm, vou usar chapas de 1,5mm.

[luiz humberto de oliveira]

muito bom estou acompanhando tudo pois irei construir conforme vc esta construindo valeu e boa sorte

[rgmanica]

[img:269bff1631]http://img18.imageshack.us/img18/7218/montagemh.jpg[/img:269bff1631]

Que balsa cinza é essa que tem no leme?

[The Borba]

[quote:77472eddaa="luiz humberto de oliveira"]muito bom estou acompanhando tudo pois irei construir conforme vc esta construindo valeu e boa sorte[/quote:77472eddaa]

Olá Luiz, pode construir que vale a pena embora de um trabalho, mas compensa depois. Só uma coisa, já vou te adiantar antes de começar, se você for colocar o servos lá atrás na cauda, precisa desencontrar a furações dos servos. A planta pede servos S3001, porém vou colocar S3003 e então o servo atravessa quase até o outro lado da fuzelagem, ficando assim sem espaço pro outro servo. Aí deixei um no lugar de origem e o outro eu transferi a furação pra cima assim desencontrando um do outro.Puxar pra frente não dá porque pega no vazado da fuzelagem.

[The Borba]

[quote:fc89772b2f="rgmanica"][img:fc89772b2f]http://img18.imageshack.us/img18/7218/montagemh.jpg[/img:fc89772b2f]

Que balsa cinza é essa que tem no leme?[/quote:fc89772b2f]

Olá rgmanica, este ponto fraco que você destacou é como está na planta. Ainda será chapeado com balsa de 1mm. Já estou com a fuzelagem toda pronta e chapeada e aparentemente está muito firme depois de toda chapeada. Vou postar mais fotos agora. A respeito da balsa, foi o que comentei lá no início do tópico, vieram várias balsas ruins junto com boas e essas cinzas são algumas, são duras, crespas e pesadas, mas paciência.

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Aqui já fiz os rasgos pra a intalação das dobradiças.
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Massa pra corrigir imperfeições.
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Aqui reforço em compensado 3mm e já suporte pra bequilha.
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Começando o chapeamento da parte de baixo da fuzelagem.
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Aqui já pronta.
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Dá fuzelagem era isto, agora vou começar a montagem da asa. Já transferi da planta pra balsa as peças que faltavam, agora é só começar a cortar.

[Mac2]

The Borba,

Qual foi a qualidade da balsa que você comprou? Se foi a comum, tive o mesmo problema e conversando com eles me orientaram a não usar esta qualidade de balsa em aeromodelos.

Abs

Marco Aurelio