Racing frames just like the Skystars Bolt5 or Foxeer Caesar prioritize mild weight and aerodynamic effectivity for optimum pace 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 possibly can count on about the identical outcomes from that package too. Apart from the “X” and “S” logos on the digital camera mount, these two frames look an identical. Each are fabricated from high-quality T-700 carbon fiber and have a 3d-printed TPU shark fin on high for turtle mode (flip again).
SkyStars-RC Bolt5 adopts a totally symmetrical TrueX body design that gives equal stability on all axes as the space 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 yr, 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 authentic bag, together with mounting screws, TPU components, and two battery straps.
The Bolt5 body consists of 4 5mm thick arms, a high plate, and two backside plates. The arms are held collectively in a backside and center plate sandwich. There’s sufficient area 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 may be put in within the middle of the body utilizing a 20×20 mounting sample. On high 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 appropriate with motors which have a 16x16mm (M3) mounting choice.
3D-printed TPU mounts
Skystars-RC included two kinds of digital camera brackets. Each TPU mounts present an aggressive digital camera angle wanted for racing competitions. The VTX antenna holder can accommodate solely super-small antennas with quick pigtails.
The shark fin in entrance is not only a cool design factor but in addition useful for Turtle mode, permitting you to flip over when you crash the wrong way up. Sadly, the fin has the drawback of constructing it not possible to put in a GoPro or different digital camera for 4K recording on board. When it’s totally assembled, the body weighs about 75 grams.
Construct Ideas
Regardless of that no documentation is offered, you possibly can assemble the Bolt 5 body in lower than quarter-hour. Keep 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 won’t 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.
Beneath the body is room for 4S with as much as 2000mAh or 6s with 1500mAh LIPO. To keep away from slicing the battery (energy) cable by the propellers, I counsel 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 |
| Suitable 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) |
