Racing frames just like the Skystars Bolt5 or Foxeer Caesar prioritize mild weight and aerodynamic effectivity for max velocity and maneuverability. Their geometry is optimized to have the smallest friction within the air, and the battery is mounted beneath the body to acquire the optimum middle of gravity (COG).
My overview refers back to the SkyStars-RC Bolt5 body package, however because the Foxeer Caesar V2 has just a few minor variations, you may anticipate about the identical outcomes from that package too. Aside from the “X” and “S” logos on the digicam mount, these two frames look similar. Each are fabricated from high-quality T-700 carbon fiber and have a 3d-printed TPU shark fin on prime for turtle mode (flip again).
SkyStars-RC Bolt5 adopts a very symmetrical TrueX body design that gives equal stability on all axes as the gap between the rotors is equal. With a wheelbase of simply 200mm, it’s the smallest 5″ body that I examined.
Skystars Bolt5 body overview
Final 12 months, SkyStars-RC despatched me this Bolt5 body with the F722HD Professional+KM55 flight stack, and I forgot about it till final week once I needed to construct a brand new racing drone. The body package was nonetheless in its unique bag, together with mounting screws, TPU components, and two battery straps.
The Bolt5 body consists of 4 5mm thick arms, a prime plate, and two backside plates. The arms are held collectively in a backside and center plate sandwich. There may be sufficient house between the 2 plates to stretch the LIPO strap. The underside plate has rubber padding for safer battery set up.
Mounting Choices
The digital components will be put in within the middle of the body utilizing a 20×20 mounting sample. On prime of the flight stack, there may be room for an analog VTX or a low-profile HD digital VTX, such because the Walksnail Avatar HD Professional. The arms are suitable with motors which have a 16x16mm (M3) mounting possibility.
3D-printed TPU mounts
Skystars-RC included two varieties of digicam brackets. Each TPU mounts present an aggressive digicam angle wanted for racing competitions. The VTX antenna holder can accommodate solely super-small antennas with brief pigtails.
The shark fin in entrance is not only a cool design aspect but additionally helpful for Turtle mode, permitting you to flip over if you happen to crash the wrong way up. Sadly, the fin has the drawback of constructing it unimaginable to put in a GoPro or different digicam for 4K recording on board. When it’s totally assembled, the body weighs about 75 grams.
Construct Suggestions
Regardless of that no documentation is offered, you may assemble the Bolt 5 body in lower than quarter-hour. Bear in mind to make use of thread locker or thick viscous grease on the screws to forestall loosening.
For electronics, think about using a flight stack and VTX (analog or digital) with a 20mm x 20mm mounting sample (30.5×30.5mm is not going to match!). I accomplished the Bolt5 (Caesar V2) race body with a MEPS flight stack (F7 FC + 45A ESC), SZ 2306 KV1750 motors, 350mW VTX, and an ELRS radio receiver.
Below the body is room for 4S with as much as 2000mAh or 6s with 1500mAh LIPO. To keep away from reducing the battery (energy) cable by the propellers, I recommend you tie it to one of many arms.
Technical parameters
| Materials | Toray carbon fiber T-700 |
| TPU components | Turtle fin, Digital camera, and Antenna mounts |
| Diagonal dimension (wheelbase) | 200mm |
| Configuration | TrueX |
| Thickness of the arm | 5mm |
| Appropriate props | 5.1 inch |
| Flight stack mounting | 20x20mm M3 |
| Motor mounting | 16x16mm M3 |
| Digital camera mount | Nano (14mm) |
| Body package weight | 76 grams (together with TPU and screws) |
