4 ms·
That appears to be an earlier iteration, as (one of) the videos embedded in the article does show it to be double-acting, as does the one in the Technology sect
by mannykannot 6y ago
That appears to be an earlier iteration, as (one of) the videos embedded in the article does show it to be double-acting, as does the one in the Technology section of the website [1], where it can be seen at 00:34 and 00:42.
[1] https://www.aquariusengines.com/technology/ https://www.aquariusengines.com/technology/