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Talk:Hiro Type 91

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Power, chronology

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So there was a Type 91 engine of 600hp, which was also developed into a Type 90, which was "larger and more powerful" and rated at...600hp? How does that make sense? They are both the same power, and if the Type 90 is larger, and making the same power rating, its actually an inferior engine, not a superior development. To me the fact that its called the "Type 90" suggests that it came BEFORE the Type 91, which would more likely be a smaller engine making the same power rating, which WOULD be an advance. 70.109.132.119 (talk) 23:52, 13 March 2018 (UTC)[reply]

The article does not say the type 91 was developed into the 90, or v.v. It merely says a type 90 existed; this could have been quite different.TSRL (talk) 13:29, 14 March 2018 (UTC)[reply]

Developed from ...?

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Gunston, the only cited source, says the 91 was "derived from the Napier Lion", which is also what earlier versions of the article say. The edit that introduced the Courlis was unreferenced, so I've reverted that. Gunston give only type, power and date, so where the detailed data in the article comes from is not known.TSRL (talk) 13:25, 14 March 2018 (UTC)[reply]

Requested move 29 December 2019

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The following is a closed discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a move review after discussing it on the closer's talk page. No further edits should be made to this discussion.

The result of the move request was: not moved. ErikHaugen (talk | contribs) 03:38, 7 January 2020 (UTC)[reply]


Hiro Type 91Hiro Type 91 520 hp water-cooled W-12 – Using only a part of the long designation is meaningless. the item MUST be described in a reasonable translation of the Japanese script. Hiro Type 91 could describe ANYTHING released for production in the 91st Showa year. Explained at Japanese aircraft engine identification systems#Army long designation system. Alternatively disambiguate with (engine) Petebutt (talk) 14:16, 29 December 2019 (UTC)[reply]

This is a contested technical request (permalink). – Ammarpad (talk) 15:30, 29 December 2019 (UTC)[reply]

The above discussion is preserved as an archive of a requested move. Please do not modify it. Subsequent comments should be made in a new section on this talk page or in a move review. No further edits should be made to this section.