Multi-rotors that are designed for First Person View (FPV) racing and sport flying continue to evolve. The Immersion RC Vortex 150 is a new machine that reflects many of the latest trends in the hobby. First of all, it's small. It measures just 156mm between diagonal motor shafts. This gives the quad a significantly smaller footprint than the 250mm-class ships that used to dominate quad racing. Yet, as you will see, the Vortex 150's bantam size does not make it any slower or less nimble.
Another innovative aspect of the Vortex 150 is that it is mostly prebuilt. A fair amount of building, soldering, and programming used to be required when setting up a racing quad. While those are all useful skills to have, they are no longer a prerequisite. You can learn as you go.
Vortex 150 Overview
The 150 is currently available as an Almost Ready-To-Fly (ARF) package ($300). It includes most of the components that would normally be purchased separately (carbon-fiber frame, brushless motors, propellers, electronic speed controls, flight controller, FPV camera, video transmitter). The only things left to add are a radio system with a micro-receiver, a 5.8Ghz video receiver (goggles or a monitor), and flight batteries.
Like the frame itself, all of the onboard components are similarly downsized. The tiny brushless motors are only 17mm in diameter and spin 76mm-diameter (3") 3-blade propellers. The flight battery is small too. You can fly with 3-cell or 4-cell packs with a capacity of about 500mAh. I've flown the Vortex 150 with a few different batteries, but my primary power sources have been Lumenier 4S-460mAh 45C batteries. This battery and the power lead on the quad come equipped with XT30 connectors.
One of my biggest challenges when building a racing quad is keeping all of the wiring neat and tidy. Space is always at a premium. And it's not just a matter of vanity. A stray wire can foul a prop or become damaged during a routine landing. None of that is a concern with the Vortex 150. Other than the receiver antennas and the power lead, all of the wiring is housed internally.