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| | Hyper engine -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-08-19) |
 | | A number of companies attempted to build hyper engines in the (The decade from 1930 to 1939) 1930s, but they were not ready for service until late in the decade. |
 | | By this point other engines had passed its 1,600 hp (1,200 kW) ratings, and while the I-1430 had a better (Click link for more info and facts about power-to-weight ratio) power-to-weight ratio, there was little else to suggest it was worthwhile setting up production in the middle of the war. |
 | | They tried again by bolting two O-1230's together into the H-2470 (Click link for more info and facts about H engine) H engine, and while this engine was planned for use in the P-53, this plane did not go into production, and neither did the engine. |
| www.absoluteastronomy.com /encyclopedia/h/hy/hyper_engine.htm (594 words) |
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