про двухскоростные коробки все ясно-обгонки и фрикционы,а как задняя?
Не проще ли скачать exploded view любой модели с задним ходом и посмотреть??
Например, коробку для Revo - все очень детально
По сути: промежуточная шестерня (вместо двух шестеренок в зацеплении - три) - направление меняется на обратное.
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