| 11. | The biplane aircraft featured a radial engine, and conventional landing gear.
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| 12. | They concentrated their higher power development effort on radial engines instead.
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| 13. | Forward visibility was considered poor due to the large radial engine.
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| 14. | The plane was powered by two Bristol Hercules radial engines with NACA covers.
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| 15. | The radial engine normally uses fewer cam lobes than other types.
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| 16. | Most were powered by 7 cylinder radial engines of different makes.
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| 17. | The Wright R-760 radial engine initially fitted with a speedring cowl.
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| 18. | A Smith Static radial engine and a pusher propeller were installed behind them.
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| 19. | It gets into your blood to hear those radial engines roar to life.
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| 20. | The name was later re-used for an Armstrong Siddeley radial engine.
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