I have read a news:
On July 13th, 2017: DRL joined The Guinness book of World Records to fly the custom DRL Racer X.
DRL’s RacerX succeeds in world record attempt. They got the fastest speed: 179.3mph.
That's a amazing speed, but I don't need so fast speed, I just want to know how to build a fast quad, what should I do, what quad parts I need？What's the biggest factor for the quadcopter flight speed?
I don't want to build a quad like the DRL Racer X, I want to build a fast speed drone, just flight fast, so what should i do?