アラン式のバルブギア、実に魅力的です。模型で作りたいなー。大変そうだけど。なおこれはStainzで使われている外装スチーブンソン式とは似て非なるものです。
Allan type valve gear was very attractive. Really I want to make this in a model. It seems very difficult to madelise. It seems similar to external Stephenson type, but different type.
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