Auto-assembled, not yet reviewed

OpenRacer

Open-source 5-inch FPV racing and freestyle quad frame.

GPL-3.0
drone4 DoF
$54.98vendor kit

Reproducibility53/100Early source coverage, unverifiedCADBOMWIREFWBUILDLICREPHow it is computed

OpenRacer source parts laid out side by side, 3D render from OpenRacer_Classic_HDZero_Nano_90.stl (not the assembled robot)

Parts preview: not the assembled robot · OpenRacer_Classic_HDZero_Nano_90.stl

Source record

Source: OpenRacer/OpenRacer @15477b2
122 stars, last push 2026-03-14
HW license: GPL-3.0
Cost: $54.98vendor kit, Five33 Open Racer Frame Kit, frame only (2 plates, 4 arms, hardware); electronics excluded
Lifecycle: Active
Engine: v3.1.1
Checked: 2026-09-30
Model: OpenRacer_Classic_HDZero_Nano_90.stl@15477b2source parts laid out, not the assembled robotrendered 2026-06-07

Maintain OpenRacer? Claim this page to correct it.

OpenRacer reproducibility score

How confidently this design builds into a working robot, from what its sources publish: each criterion's points, quality tier and evidence.

metCAD / mesh present42 editable CAD files (DXF/STEP/F3Z) for 21 parts, including an assembly + 256 mesh files20/20
Quality tier 3 of 3
- cad/Fusion360/HDZero_Tank_V2_Parametric_v3.f3z15477b2
- cad/SharkCanopies/SharkCanopies.f3d15477b2
partialBOM evidenceReviewedREADME lists required screws, nuts, pressnuts and standoffs with quantities (11 lines) plus recommended electronics; no prices, links or total. Lists sit in code blocks, which the engine missed.10/20
Quality tier 2 of 5
Reviewed override, 2026-09-30
Evidence on github.com
Engine alone: missing at tier 0 (no BOM found)
missingWiring diagramno wiring diagram found0/15
Quality tier 0 of 3
The engine found nothing to point at for this item.
partialFirmware linkedReviewedThe JM OpenRacer Light README names the Betaflight preset to run ("OpenRacer 5 6S by JazzMutant"); firmware is only mentioned, not linked or bundled.5/10
Quality tier 1 of 3
Reviewed override, 2026-09-30
Evidence on github.com
Engine alone: missing at tier 0 (no firmware found)
partialBuild instructionsbuild video, no written guide7.5/15
Quality tier 1 of 3
- build video
metOSHW-compatible licenseGPL-3.0 (from repository license)10/10
Quality tier 2 of 2
- LICENSE15477b2
missingKnown reproductionsno verified builds yet0/10
Quality tier 0 of 2
Only build reports a maintainer or admin has reviewed count here.

Engine v3.1.1 at 15477b2, 2 items reviewed by hand

The engine found no joint model or stated figure to count degrees of freedom from.

How this score is computed

About OpenRacer

OpenRacer is an open-source hardware FPV drone frame for racing and freestyle. The repo ships carbon-fiber plate geometry (DXF for laser/CNC cutting) plus 3D-printable TPU/Nylon canopies, with recommended electronics for AnalogPro and Classic build configurations.

Licenses

Hardware: GPL-3.0
Software: Not published
Docs: Not published

Degrees of freedom

4 DoF rotors 4

Breakdown source

Quadcoptersource

How to build OpenRacer

5 steps

Steps marked Motari summary condense the linked source; follow the source for exact instructions.

Source the carbon frame
Send the DXF cut files to a carbon-fiber cutting service, or buy a pre-cut kit. Plates are 2.5 mm, arms 5 mm, braces 4 mm.
Motari summaryyoutu.be/wqulm-HaGHg
Print the canopy
Print an AnalogPro or Classic canopy in TPU or Nylon using the documented print settings.
Motari summaryyoutu.be/wqulm-HaGHg
Mount the FPV stack
Install the flight controller and 4-in-1 ESC, then bolt on the four brushless motors.
Motari summaryyoutu.be/wqulm-HaGHg
Wire VTX, camera, RX
Route the video transmitter, FPV camera and radio receiver, then secure with the canopy.
Motari summaryyoutu.be/wqulm-HaGHg
Configure and tune
Configure the flight controller firmware and bind your receiver. For the JM OpenRacer Light variant, upstream recommends a Betaflight preset.
Motari summaryyoutu.be/wqulm-HaGHg

Print timenot published

Assembly timenot published

Wiring, power and firmware are safety-relevant and shown for reference only. Check them against the source before building.

OpenRacer bill of materials

20 rows

Cost to build

$54.98USDvendor kit

Five33 Open Racer Frame Kit, frame only (2 plates, 4 arms, hardware); electronics excluded$54.98vendor kit

In the source currency, as read on 2026-09-30. Not converted, and not checked against current vendor prices: none of these is a Motari-verified checkout total.

OpenRacer parts, as the source lists them. Prices are the source's, not checked against vendors.

OpenRacer bill of materials
Part	Qty	Spec	Source	Confidence
Top and bottom carbon platesSource README recommended carbon thickness	1	2.5mm carbon fiber plates	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 33	high
Carbon armsSource README recommended carbon thickness	4	5mm carbon fiber arms	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 34	high
Carbon bracesSource README recommended carbon thickness	1	4mm carbon fiber braces	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 35	high
M3 pressnutsRequired screws, nuts, and standoffs	8	M3 pressnuts for top plate	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 41	high
M3 standoffsRequired screws, nuts, and standoffs	4	10mm M3 standoffs for canopy mount	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 42	high
M3 plastic nutsRequired screws, nuts, and standoffs	4	M3 plastic nuts for FC/stack	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 43	high
M3 button-head screws, 12mmMotor mounting hardware	8	Titanium or grade alloy M3 button-head 12mm	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 46	high
M3 button-head screws, 8mmMotor mounting hardware	4	Titanium or grade alloy M3 button-head 8mm	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 47	high
M3 button-head screws, 6mmCanopy hardware	4	Titanium or grade alloy M3 button-head 6mm	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 48	high
M3 countersunk screws, 16mmArm mounting hardware	4	12.9 grade alloy steel M3 countersunk 16mm	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 52	high
M3 countersunk screws, 30mm30x30 stack hardware	4	12.9 grade alloy steel M3 countersunk 30mm	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 53	high
TPU or Nylon canopySource README print material guidance	1	95A TPU canopy, or Nylon for AnalogPro	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 63	high
Flight controllerAnalogPro recommended component class	1	Foxeer 20x20 V2 or Clracing F7 class	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 110	med
ESCAnalogPro recommended component class	1	Foxeer Reaper 45A/60A 20x20 or 30x30 Blheli32 ESC class	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 111	med
FPV cameraAnalogPro recommended component class	1	Foxeer Predator nano V5 or Runcam/Foxeer micro class	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 112	med
Video transmitterAnalogPro recommended component class	1	Rush Tiny Tank class	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 113	med
Brushless motorsAnalogPro recommended component class	4	Vanover V2 / Headsup / 2207 5-inch class motors	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 114	med
5-inch propellersAnalogPro recommended component class	4	Dal Cyclone V2 or Gemfan 51466X3 class	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 115	med
6S LiPo batteryAnalogPro recommended component class	1	Rline 1300mAh 6S or equivalent	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 116	med
Radio receiverAnalogPro recommended component class	1	Receiver matching pilot radio: Ghost, Tracer, ELRS, Crossfire, etc.	your choice, of the kind the project's BOM listsprice not listedOpenRacer README 15477b2 line 118	med

Rows from the source's own parts list 20

README.md@15477b2markdown

Source row	Qty	Price and vendor	Line
Top and bottom carbon plates	1	vendor not listedno price listed	L33
Carbon arms	4	vendor not listedno price listed	L34
Carbon braces	1	vendor not listedno price listed	L35
M3 pressnuts	8	vendor not listedno price listed	L41
M3 standoffs	4	vendor not listedno price listed	L42
M3 plastic nuts	4	vendor not listedno price listed	L43
M3 button-head screws, 12mm	8	vendor not listedno price listed	L46
M3 button-head screws, 8mm	4	vendor not listedno price listed	L47

12 more rows in README.md

OpenRacer source files

9 files

Files stay in the upstream repository under their own licenses; these links open them there. The 3D model on this page is Motari's conversion of the file named under Simulation.

OpenRacer in simulation

Robot description files a simulator or CAD tool can load, linked at the commit they were found.

No URDF, MJCF, SDF, USD or Onshape model has been found in the sources.

The 3D specimen on this page is converted from cad/HDzero_Race2/Full_Canopy/Runcam_Nano_90/OpenRacer_Classic_HDZero_Nano_90.stl at 15477b2, with the parts laid out side by side because the source has no assembly.

Builds of OpenRacer

0 reviewed

No reviewed builds of OpenRacer yet.

A build log records the evidence (photos, a video, your repository), what the build cost, how long it took and what you changed. Each one is checked by Motari (until a maintainer claims this page) before it shows here, and reviewed builds count toward the reproducibility score.

Sources and provenance

Sources

Hardwaregithub.com/OpenRacer/OpenRacer/tree/master/cad15477b2
Bill of materialsgithub.com/OpenRacer/OpenRacer/blob/master/README.md15477b2
Storeflyfive33.com/products/five33-open-racer-frame-kit-1
Build guideyoutu.be/wqulm-HaGHg

Last push to OpenRacer/OpenRacer: 2026-03-14 (checked 2026-10-01)

How this page was made

Assembled from public sources on 2026-06-04, not yet reviewed by the maintainer. Each figure links to where it is stated; a value the sources do not state reads "not published". Last source review: OpenRacer README 15477b2 source hardware list parsed; unpriced.

Original files stay intact and separately licensed; Motari adds only the summary on this page. Maintainer? Request a correction or removal.

Badge for the README

Maintain OpenRacer? Show its reproducibility score in the project's README. The badge links back to this page and updates with the score.

Markdown

[![Motari reproducibility score for OpenRacer](https://motari.io/api/v1/badge/openracer-fpv)](https://motari.io/r/openracer-fpv)

HTML

<a href="https://motari.io/r/openracer-fpv"><img src="https://motari.io/api/v1/badge/openracer-fpv" alt="Motari reproducibility score for OpenRacer" height="20"></a>

Not fully met yet: bom evidence (partial), wiring diagram, firmware linked (partial), build instructions (partial). The score is read from the project's own sources, so publishing what is missing is what raises it. A score of 90 or more needs a reviewed build. How the score is computed

About OpenRacer

Licenses

Degrees of freedom

How to build OpenRacer

Source the carbon frame

Print the canopy

Mount the FPV stack

Wire VTX, camera, RX

Configure and tune

OpenRacer bill of materials

Cost to build

Rows from the source's own parts list 20

OpenRacer source files

OpenRacer in simulation

Builds of OpenRacer

Sources and provenance

Sources

Related links

How this page was made

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Badge for the README