Mockup

HD Racer Chaser

By Austin Blair on Jun 25, 2020

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After a spur of the moment opportunity to take my trusty Flosstyle out to chase some race cars, I quickly found out I needed something special. Something so radical it has zero uses outside of its intended function. Thus, this beast was born.

It quickly became apparent that my 1800kv 6S setup wasn't going to be quick enough to let me consistently follow racecars at speed. Thanks to a great deal of interest from my producer, I was able to put together this absolute monster of a freestyle rig. While most would've likely gone the route of slapping a Vista in a traditional racing frame, I went the way of a frame I'm very familiar with. I'm a huge fan of the original Flosstyle, and the integration of 20x20 mounts in the updated Glide, so naturally I stayed in the Kabab family of frames. Unfortunately, getting a hold of the Glide Light frame has been next to impossible, so this is the standard layup, which still comes in around 82g. The Glide is extremely durable, easy to build, and allows me to route everything very nicely. I've also found the Flosstyle and Glide to be rather aerodynamic with their tapered arms, so this is another plus for a quad that stays near 100mph for most of its flight. Lastly, the space for a massive 1600mAh battery and a Hero8 allows this frame to be incredibly versatile, a handy feature when traveling to many diverse tracks around the country.

My choice in motors was one of overkill. As much as I love the look and quality of the iFlight Xing series, the kv I wanted wasn't an offering, at least at the time, from that family of motors. Being an occasional drone racer, I was familiar with the highly praised Hyperlite series. A 1922kv motor is just on the high end of what I feel safe flying on 6S, giving me great punch and top end, as well as the peace of mind that I'm not pushing anything ridiculously hard. While I could've certainly pushed above 2000kv, having an ESC desync on an active racetrack isn't good for anyone, so my cautious side won out on this front. These aren't without their faults, however, as two minutes of 80% and above throttle will kill a battery, regardless of C rating. In addition, these motors are consistently searing hot after flying of any intensity, no matter the PID tune, so reliability will be something I keep an eye on as time goes on. After two full weekends of shows, they still seem to be healthy, with no enamel burns visible and a very strong magnet pull.

Stack wise, simplicity was key. In an industry where you have a maximum of three weekdays between jobs, having plug and play components is an absolute must. This made the F4 HD stack from T-Motor a no brainer, allowing me to simply unpug and swap in the event of a part failure. No remapping the pins between the ESC and the FC, nor is there any mess of unmounting the RX, as was the case with my old build's Synergy, just replace what you need and go.

The Caddx Vista was the most obvious choice in this entire build, as this rig is only good for GoPro footage without it. The DJI system, which incredibly convoluted in doing so, allows me to output my FPV feed into the live broadcast, bringing the live World of Outlaws shows on CBS to the same level as NASCAR (argued to be better by some). This, unfortunately, requires I connect my goggles ($539) to a DJI Smart Controller ($750), which then outputs HDMI to a Decimator HDMI to SDI ($250). Things add up very quickly, but at least it's a start. On the slightest chance the right person is reading this, PLEASE make this easier, even if we still have to buy something, just don't make me buy a Smart Controller I'll never properly use.

Lastly, I went with the most ridiculous props I could find, so the Emax AvanR 5x5.6 tri-blade prop was chosen. It's crazy fast, pulls a respectable amount of current, and isn't terribly heavy. Would I run this on a pure freestyle rig? Absolutely not. A racer? For sure. On the rare occasion I try to use this rig for freestyle, I find the Ethix S3 to be perfect, as these motors spin fast enough to make the shallow pitch fly just as quick as a normal 5 inch prop.

My apologies for how basic the rundown was, but I figured it might be interesting to some of you to see how a broadcast rig can be setup for constant abuse but killer performance. Check the comments for some examples of work I've done on this rig and check CBS Sports for the World of Outlaws, chances are this quad is flying as a part of the show.

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