TriRig Omega, pt 2: Prototipagem

Prototipagem

Então aqui está, pessoal. É um freio TriRig Omega, em carne e osso. Mais ou menos. Este é apenas um protótipo SLS, feito de plástico. É uma espécie de prova de conceito, usada para validar que tudo se encaixa e funciona mecanicamente sem problemas. Vou tirar a grande questão do caminho agora mesmo: sim, funciona, e sim, estou prosseguindo para a próxima fase (criar um protótipo funcional).

O freio passou por muitas mudanças desde a primeira iteração que mostrei antes. O observador cuidadoso notará imediatamente algumas mudanças importantes. Primeiro de tudo, os suportes de pastilha agora estão separados dos braços do freio. O grande benefício de fazer dessa forma é que o freio funcionará como um freio dianteiro ou traseiro! Isso também simplifica o ajuste da pastilha - você define a altura do freio por meio da placa traseira e, em seguida, faz microajustes por meio do parafuso da pastilha e dos parafusos de ajuste de largura na lateral.

E com isso em mente, vamos falar sobre os suportes de pastilhas. Eles são usinados sob medida e específicos para esse freio, e eles mantêm a largura geral bem estreita, mas ainda acomodam aros super largos. Como mostrado na foto, o freio segura um aro Firecrest, e ainda assim não excede a largura das pernas do garfo. Na página dois, compararemos isso com o Tektro centerpull, que tem que exceder drasticamente as pernas do garfo para segurar um aro Firecrest, e na minha opinião, parece bem feio fazendo isso.

Este protótipo em particular está indo para um túnel de vento especial projetado pelo Dr. Andrew Coggan. É um túnel em pequena escala que ele construiu especificamente para explorar questões relacionadas a freios de bicicleta. Neste caso, há duas perguntas específicas que quero responder. Uma, quão bom é o Omega em relação a outros freios, e duas, qual das minhas várias versões de protótipo é a mais rápida? Tenho algumas versões alternativas dos braços de freio, algumas mais leves, mas menos aerodinâmicas, e quero descobrir exatamente quais são os ganhos de uma versão em relação à outra. Dependendo do que acontecer, ainda posso prosseguir e produzir uma versão padrão e uma "SL" para aqueles que acham que os aerodinâmicos precisam ficar um pouco mais leves.

Muito em breve, terei os primeiros freios protótipos funcionando em mãos e poderei testar essas belezinhas na estrada. Nesse ponto, talvez você consiga ver mais algumas imagens. E então, finalmente, com o conhecimento que aprendi no túnel de vento e assumindo que tudo esteja como eu espero, darei sinal verde para a produção completa dessas belezuras. Continue verificando para ver mais - você pode marcar este link para ficar atualizado sobre as notícias da Omega.

Acesse o link para uma discussão sobre o estado do freio Centerpull, mais alguns detalhes sobre o Omega em si e por que eu acho que o Omega será o freio dianteiro mais épico de todos os tempos.


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