Initially Napier & Son built engines designed by the Royal Aircraft Factory, but at his own expense Napier subsequently designed his own, the Lion.
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He was unable to design a satisfactory successor to the Lion, and therefore Napier was overtaken in the aero-engine market by Bristol and Rolls-Royce.
Charles James Napier | Napier | Napier, New Zealand | William Francis Patrick Napier | Robert Napier, 1st Baron Napier of Magdala | Napier Lion | Montague | Charles Napier | Robert Napier | Montague Summers | Mick Napier | Charles Montague Cooke | Napier, Western Cape | Napier Deltic | Montague, Massachusetts | John Light Napier | William Napier (lawyer) | William Napier | Susan J. Napier | Sir Charles Napier's | Napier Range | Montague Shearman | Montague, Prince Edward Island | George Thomas Napier | Declan Napier | Thomas Napier (jurist) | Stephen Montague | Napier (Lion) | Montague Island | Michael Napier Brown |