Instead of bigger engines and louder exhausts, the new battleground is compact machines spinning at speeds that would shred ...

Internal-combustion engines are making impressive strides in rotational speed. The Lamborghini Temerario has a 4.0-liter twin ...

NovaTorque, Inc. has introduced 900 RPM versions of its 1.5, 2, 3 and 5 hp models. The new models provide a full load motor-only efficiency rating of 92% to 94% compared to approximately 82% to 87% ...