How to Choose Each Component
⚙️ Brushless Motors
⚡ ESC — Speed Controllers
🧠 Flight Controller
🔋 Batteries
📻 Radio & 📹 Video
Full component encyclopedia, assembly steps, wiring diagram and the interactive Build Advisor are in the Arabic edition.
📊 Quick Selection Reference
| Build type | Motor | Battery | Prop | ESC |
|---|---|---|---|---|
| Racing 5" | 2207 / 1900KV | 6S 1300mAh | 5×4.3×3 | 50A 4-in-1 |
| Freestyle 5" | 2207 / 1750KV | 6S 1300–1500mAh | 5×4.8×3 | 45–60A |
| Cinematic 7" | 2807 / 1300KV | 6S 2200mAh Li-Ion | 7×4×3 | 60A |
| Long-range | 2806 / 1300KV | 6S Li-Ion pack | 7×3.5×2 | 45A |
| Tiny Whoop | 0802 / 19000KV | 1S 450mAh | 40mm 4-blade | 5A AIO |
💰 Where to Spend and Where to Save
💸 Spend here
Radio system — you keep it across every future build.
Batteries — cheap cells sag under load and die fast.
Motors — the difference in bearings and magnets is felt immediately.
💡 Save here
Frame — a mid-range carbon frame flies the same as a premium one.
Props — consumables; buy in bulk.
First camera — start modest and upgrade once you know your style.
⚠️ Never compromise
LiPo charger with balance and safe storage mode.
Fireproof charging bag.
These aren't accessories — they're fire safety.
🔧 Compatibility Traps to Avoid
1 · Mounting pattern: the FC/ESC stack hole spacing (30.5×30.5mm is standard, 20×20mm for micro) must match your frame.
2 · Cell count: a 4S-rated ESC will fail instantly on a 6S battery. Check the S rating on every component.
3 · Motor shaft: M5 is standard for 5-inch; props with the wrong bore won't seat safely.
4 · Connectors: XT60 for 5-inch, XT30 for micro — mixing them means soldering rework.
5 · UARTs: count the free UART ports on the FC before adding GPS, radio and VTX — running out is a classic mid-build surprise.
Frequently asked questions
What does the KV number on a motor mean?
KV is revolutions per minute per volt with no load. High KV with a small prop gives speed and sharp response; low KV with a large prop gives torque, efficiency and longer flight time. The practical rule: the larger the prop diameter or the higher the cell count, the lower the KV you want.
How do I choose a battery C-rating?
Maximum continuous current equals capacity in amp-hours multiplied by the C-rating. A 1500mAh pack rated 100C theoretically delivers 150 amps. Manufacturer figures are optimistic, so design against roughly 60 to 70 percent of the printed number and leave headroom above your peak motor draw.
Separate ESCs or a 4-in-1 board?
A 4-in-1 board is lighter, has cleaner wiring and is easier to build, which makes it the default for 5 inch frames. Separate ESCs suit larger builds and payload carriers, because one burnt ESC does not take out all four and replacement is cheaper.
LiPo or Li-Ion for this use case?
LiPo delivers very high discharge current and suits FPV and aggressive manoeuvring. Li-Ion cells (18650 or 21700) store more energy per gram but deliver less current, making them the better fit for long, calm survey flights. Mixing up the two is a common cause of weak performance or overheating cells.
