The "Crack Pigeon" is a variation on Le Pigeon: https://rotorbuilds.com/build/28511 but using 8 inch arms which are available at: https://strawhataerial.com/collections/le-pigeon

This is an 8S setup running 8" props which provides better flight time, lower battery sag, higher crusing and top speed, as well and higher payload capacity. The cost is heavier weight, reduced agility, and if it's an 8S configuration, most likely you'll need two 4S packs for every flight. The crack Pigeon is suitable for people who need sustained high speed footage chasing cars and boats and is well suited for vast landescapes in which lots of ground must be covered in the blink on an eye. Flight time when ripping around like a madman is 5 minutes. When cruising it can fly 7 minutes, possibly more with lower pitch 8" props.

With this build, top speed is about 100mph with Gemfan 8060 props, which isn't anything special, BUT you can sustain these higher speeds for much longer because it's running on a higher voltage so there is much less sag and this drone is still quite light for a machine that flies the BMPCC4K thanks to the naked cage.