JoinFPV

5-inch race class

FPV Racing Drone Builder

Light, stiff 5-inch quads for gate courses, where every gram you save comes back as acceleration out of the corners.

Racing rewards a light quad with consistent power from the first lap to the last. Race builds use the same 5-inch parts as freestyle but trim everything else: a lighter frame, smaller 6S packs, low-latency video and no action camera. JoinFPV checks each motor's peak current against the ESC, the pack's C-rating and connector against hover and full-throttle current, and the prop tip speed of high-KV setups, and shows the weight and thrust-to-weight you will race with.

Start Building · Inspect Parts in 3D

Typical build specs

Props
5–5.1″ tri-blades
Battery
6S 850–1050 mAh LiPo
Take-off weight
440–520 g with the pack
Thrust-to-weight
12:1–14:1
Flight time
≈ 1.5–2.5 min at race pace

What goes into a race quad

What to look for in each part, and why it matters in this class. Product names are examples, not endorsements.

Frame

5″ race frame under about 90 g

A narrow, low-drag body and no more carbon than the crashes need: the frame is the easiest place to save weight.

Motors

2207–2306 stator, top of the 6S window (around 1950 KV)

Quick throttle response for corner exits. High KV on 6S pushes prop tip speed up, which the builder checks.

e.g. T-Motor Velox V2 V2306 1950 KV

Props

Light 5–5.1″ tri-blades

Lower pitch accelerates and grips on tight tracks; higher pitch carries more speed on open ones.

e.g. Gemfan Hurricane 51466

Battery

6S 850–1050 mAh high-discharge LiPo, XT60

Small packs keep the weight down and still cover a race heat. Races are flown near full throttle, so check the C-rating against the peak.

Flight controller + ESC

30.5 or 20 × 20 mm stack with a 45–60 A 4-in-1 ESC

Rate each ESC channel above the motor's peak current, with headroom for the punch out of every corner.

e.g. SpeedyBee F405 V4 BLS 55A

Video

Analog or HDZero

About the lowest and most consistent latency, and race organizers can spread pilots across channels.

e.g. TBS Unify Pro32 Nano, HDZero Race V3

Receiver

ExpressLRS 2.4 GHz with antenna diversity

A high packet rate keeps control latency low, and a diversity receiver's two antennas cut the fades as the quad rolls and flips.

e.g. RadioMaster RP3

Antennas

Short, crash-tough video antenna that matches your goggles

Gates and pylons break long antennas. Anchor the coax so a hit bends the antenna, not the connector, and match its polarization (RHCP or LHCP) to the goggles.

What JoinFPV checks for you

The builder runs these checks as you add parts, so a mismatch shows up before you order anything.

  • ESC current — Each motor's listed peak current is checked against the ESC's per-channel rating, with a short burst allowance.
  • Pack and connector at full throttle — The pack's C-rating and the XT60 are checked against hover and full-throttle current, with a throttle cap suggested when the peak is over the limit.
  • Prop tip speed — Loaded tip speed from KV, pack voltage and prop diameter, flagged above Mach 0.8.
  • Stack and frame fit — Flight controller, ESC and frame mounting patterns must match: 20 × 20, 25.5 × 25.5 or 30.5 × 30.5 mm.
  • Weight and thrust-to-weight — Both update as you swap parts, with 15 % of the non-battery weight added for wires and screws, so you see what a lighter part buys you.
  • Betaflight CLI preview — The motor protocol is set from the ESC's DShot rating, ready to copy or download.

How the four classes compare

Prop size

  • Cinewhoop: 3–3.5″
  • Racing: 5–5.1″
  • Freestyle: 5–6″
  • Long range: 7–10″

Take-off weight

  • Cinewhoop: 230–320 g
  • Racing: 440–520 g
  • Freestyle: 550–700 g
  • Long range: 900–1500 g

Thrust-to-weight

  • Cinewhoop: 4:1–6:1
  • Racing: 12:1–14:1
  • Freestyle: 8:1–12:1
  • Long range: 4:1–6:1

Flight time

  • Cinewhoop: 3–5 min
  • Racing: 1.5–2.5 min
  • Freestyle: 2.5–4 min
  • Long range: 18–35 min

Typical ranges, not limits. Flight time is usable charge divided by a typical average current for the class; your parts and your flying decide. The builder estimates steady-hover time for your exact parts, which runs longer than you will get flying hard.

Tips for your race quad

Trim grams, not power

Upward acceleration is roughly g × (thrust-to-weight − 1). Take 40 g off a 480 g quad and the same motors climb and exit corners harder.

Agree channels before you power up

At a race, use your assigned channel, and pit mode or the lowest power until your heat: a video transmitter switched on in the wrong channel can cost another pilot their race.

Protect the electronics

Soft-mount the stack, keep the battery lead short and twisted, and solder a 1000 µF, 50 V low-ESR capacitor to the ESC pads.

Race the quad you practice with

Set the simulator quad's weight and rates close to your build so lap times and muscle memory carry over.

New to FPV? The Beginner level of the course is free: Learn FPV by doing

What it's built for

  • Club race nights on gate courses
  • MultiGP-style tracks: split-S, dive gates and ladders
  • Time trials and lap-time practice

Practice in an FPV simulator first

Best for race quads

  • VelociDrone — racing physics and online race leagues
  • DRL Simulator — Drone Racing League courses
  • Liftoff — freestyle and racing, large map library

Also worth a look

  • Liftoff: Micro Drones — tiny whoops and micro quads
  • Uncrashed — freestyle on photoreal maps
  • TRYP FPV — freestyle and cinematic lines
  • FPV SkyDive — beginner-friendly first flights
  • DCL The Game — Drone Champions League racing
  • FPV Freerider — lightweight, runs on modest PCs

Where FPV pilots buy parts

North America
GetFPV · RaceDayQuads · Pyrodrone · Rotor Riot · NewBeeDrone · Lumenier · ReadyMadeRC · Five33 · RotorGeeks
UK & Europe
Unmanned Tech · Quadmula · FPV24 · n-Factory · Drone-FPV-Racer · Studiosport
Global marketplaces
Banggood · AliExpress · HobbyKing · Amazon
Brand stores
BetaFPV · iFlight · GEPRC · SpeedyBee · HGLRC · Flywoo · EMAX · T-Motor · Team BlackSheep (TBS) · RadioMaster · Foxeer · Caddx · RunCam · DJI Store

Store and simulator names are trademarks of their respective owners. JoinFPV is independent and not affiliated with them: plan and verify your build here, then buy wherever you like.

Frequently asked questions

What's a competitive weight for a 6S race quad?

Most 5-inch 6S race builds weigh 440–520 g with the pack. The grams come off the frame, the pack and the camera: race quads skip the action camera and fly small 850–1050 mAh packs.

Analog, HDZero or DJI for racing?

Analog and HDZero are the common choices: both keep latency low and consistent, and race organizers can spread several pilots across channels. DJI and Walksnail give a clearer picture at a higher latency, so check what your race allows.

Does JoinFPV calculate thrust-to-weight for race builds?

Yes. Once you pick motors, props and a battery, JoinFPV adds up the take-off weight and the motors' listed thrust to give a thrust-to-weight ratio. Race builds usually aim for 12:1 or more.

Which FPV simulator do racers train on?

VelociDrone and the DRL Simulator are the racing standards: VelociDrone runs online races on MultiGP-style tracks, and the DRL Simulator recreates Drone Racing League courses. Match the sim quad's weight and rates to the build you plan in JoinFPV so lap times translate.

Ready to design your race quad?

Open the builder and pick parts: it checks them as you go and shows the build's weight, thrust-to-weight and hover time.

Open Builder