![Amazon.com: TECHING Five-Cylinder Radial Engine Model Kit, 230 Pieces 1:6 DIY Metal Aircraft Mechanical Working Motor Assembly Kit : Toys & Games Amazon.com: TECHING Five-Cylinder Radial Engine Model Kit, 230 Pieces 1:6 DIY Metal Aircraft Mechanical Working Motor Assembly Kit : Toys & Games](https://m.media-amazon.com/images/I/61dGnIcUYAL._AC_UF350,350_QL80_.jpg)
Amazon.com: TECHING Five-Cylinder Radial Engine Model Kit, 230 Pieces 1:6 DIY Metal Aircraft Mechanical Working Motor Assembly Kit : Toys & Games
![Charles Lawrance, originally a race car engine designer, built his first air-cooled aircraft engine in 1921 for a Navy contract. The J-1 was the first practical American radial and satisfied a Navy Charles Lawrance, originally a race car engine designer, built his first air-cooled aircraft engine in 1921 for a Navy contract. The J-1 was the first practical American radial and satisfied a Navy](https://c8.alamy.com/comp/2GGBND4/charles-lawrance-originally-a-race-car-engine-designer-built-his-first-air-cooled-aircraft-engine-in-1921-for-a-navy-contract-the-j-1-was-the-first-practical-american-radial-and-satisfied-a-navy-need-for-a-compact-lightweight-engine-for-use-on-aircraft-carriers-not-plagued-with-water-leakage-problems-used-in-aircraft-such-as-the-curtiss-ts-1-the-engine-had-superior-performance-weighed-less-and-was-easier-to-maintain-than-liquid-cooled-engines-in-comparable-aircraft-with-encouragement-from-the-navy-lawrance-merged-with-wright-and-the-j-1-developed-into-the-famous-whirlwind-series-de-2GGBND4.jpg)
Charles Lawrance, originally a race car engine designer, built his first air-cooled aircraft engine in 1921 for a Navy contract. The J-1 was the first practical American radial and satisfied a Navy
![Amazon.com: TECHING Five-Cylinder Radial Engine Model Kit, 230 Pieces 1:6 DIY Metal Aircraft Mechanical Working Motor Assembly Kit : Toys & Games Amazon.com: TECHING Five-Cylinder Radial Engine Model Kit, 230 Pieces 1:6 DIY Metal Aircraft Mechanical Working Motor Assembly Kit : Toys & Games](https://m.media-amazon.com/images/I/71dwNrQDOLL.jpg)