Kirby vs. Eureka, Part One
TL;DR version: apparently, the sweet spot for me with vacuum power is between 3 and 5 amps in the motor. I just had my mind blown. My grandma's Eureka vacuum had a 4 amp motor. A Kirby vacuum made between 1940 and 1962 has 4 amps (1963-70 were around 5 amps, 1970-1981 were 6 amps; they went back to 4.5-5.5 between 1981 and 1991.) They have the same amount of power going to the motor, powering the fan, and turning a belt controlling the brush roller. The belt distance on a Kirby is about 2/3 that of a Eureka. The fan on a Kirby is vertically mounted, and larger. But, the Kirby will actually lift the carpet up as it cleans, while on a Eureka, the carpet doesn't move. The Kirby feels much more powerful, even though it has the same amount of power. The Kirby gets more out of the carpet. The Eureka is remarkably quieter. Because the base (as on all Eurekas made after 1975) is made of Lexan plastic, and the handle (since 1983) is made of plastic, the Eureka is lighter. The Kirby has...