5-inch FPV freestyle motor
AMAXinno 2306 Competition Bando
A 5-inch freestyle motor in ten KVs, built round AMAX's one-piece 7075 Lock-Bell and a titanium shaft; AMAX lists up to 2,160 g of thrust for the 1950KV on 6S.
- 5-inch freestyle and bando
- 6S for the 1750–2150KV in AMAX's figures
- 5-inch three-blade props such as the 51466 and 51499
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 2306 motor drawn from AMAXinno’s published sizes, not its exact design. No-load speed is KV × 22.2 V, a nominal pack for this version. AMAXinno publishes no bench data for it.
- Weight
- 33.5 g
- with leads; 30.0 g without
from $31.00a motor at AMAXshop
A set of four: $124.00
Price seen Oct 19, 2026. Plain links: we earn nothing from them.
What you get for $31.00
Up to 2,160 g on 6S
AMAX lists 2,160 g of thrust for the 1950KV on 6S with a 51499 three-blade, drawing 55 A.
Source: AMAX 1950KV thrust
Ten KVs
Sold in 1150, 1400, 1650, 1750, 1850, 1950, 2050, 2150, 2500 and 2700KV, all at one price.
Source: AMAX product page
One-piece Lock-Bell
AMAX's Competition motors use a one-piece 7075 aluminium bell with no parting line, a thick wave-shaped crash area and an electroplated surface.
Source: AMAX Competition highlights
Sealed top bearing, titanium shaft
A hidden top bearing sealed to IP54, Japanese bearings, and a half-hollow titanium shaft held by a screw.
Source: AMAX Competition highlights
What to pair it with
Our reading of AMAXinno’s numbers, so your build matches what the motor was tested with.
- ESC
- AMAX's thrust figures for the 1950KV draw 46–57 A (the most on 5S with a 6042 prop) and for the 1750KV 40–47 A. A 55 A or larger ESC covers them. (AMAX 1750KV thrust, AMAX 1950KV thrust)
- Props
- On 6S AMAX tested 5-inch three-blades (5040, 5130, 5135, 51466, 51499); on 4S and 5S mostly 6- and 7-inch props (6042, 7040, 7042). (AMAX 1750KV thrust, AMAX 1850KV thrust, AMAX 1950KV thrust, AMAX 2050KV thrust, AMAX 2150KV thrust)
- Battery
- AMAX shows the 1750KV, 1950KV and 2150KV on 4S to 6S and the 1850KV and 2050KV on 6S. (AMAX 1750KV thrust, AMAX 1850KV thrust, AMAX 1950KV thrust, AMAX 2050KV thrust, AMAX 2150KV thrust)
- Frame
- Four M3 holes on a 16 mm circle (16 × 16 mm). (AMAX drawing)
Where to buy
- AMAXshopthe maker's store; single motor, any KV (the standard 2306 Competition is US$30.00)$31.00seen Oct 19, 2026Visit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 1,950 rpm/V (also 1150, 1400, 1650, 1750, 1850, 2050, 2150, 2500 and 2700KV) | AMAX product page |
| Stator | 23 × 6 mm (2306) | AMAX product page |
| Configuration | 12N14P (12 stator slots, 14 magnet poles) | AMAX specs |
| Battery | 4S–6S LiPo in AMAX's thrust figures for the 1750KV to 2150KV | AMAX 1750KV thrust, AMAX 1850KV thrust, AMAX 1950KV thrust, AMAX 2050KV thrust, AMAX 2150KV thrust |
| Weight | 33.5 g (with leads; 30.0 g without) | AMAX specs |
| Dimensions | φ29 mm; 15.4 mm from the base to the top of the bell, with the shaft standing 13.5 mm above it | AMAX drawing |
| Shaft | Titanium, half-hollow; 5 mm with an M5 prop thread, standing 13.5 mm above the bell | AMAX drawing, AMAX Competition highlights |
| Mounting | 4 × M3 holes on a 16 mm circle (16 × 16 mm) | AMAX drawing |
| Bell | AMAX Lock-Bell: one piece (no parting bell), 7075 aluminium, thick wave structure, electroplated scratch-resistant surface | AMAX Competition highlights |
| Magnets | Curved, heat resistant, held by an anti-slip ring | AMAX Competition highlights |
| Bearings | Japanese bearings; the top bearing is hidden and sealed to IP54 | AMAX Competition highlights |
| Winding | Single thick copper wire rated to 260 °C, sealed and fixed | AMAX Competition highlights |
| Peak power | 1,000 W (for under 10 s; 700 W continuous (over 10 s)) | AMAX specs, AMAX spec icons |
| Leads | 150 mm heat-resistant silicone wire | AMAX specs, AMAX Competition highlights |
Inside the motor
A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:
- Bell. One-piece 7075 aluminium Lock-Bell, dynamically balanced, with an electroplated surface. (AMAX Competition highlights)
- Base. Extra-thick 7075 aluminium base with longer thread holes and cooling fins. (AMAX Competition highlights)
- Stator. Thin laminations made by Kawasaki in Japan. (AMAX Competition highlights)
- Shaft. Half-hollow titanium, fixed with a screw; the prop seat has anti-slip spikes. (AMAX Competition highlights)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1950KV version reaches about these speeds; a prop loads the motor and brings it down, typically to around 70–75% of these figures at full throttle.
| Battery | Volts | No-load rpm (KV × V) | Electrical frequency | ESC steps per second |
|---|---|---|---|---|
| 4S nominal | 14.8 | 28,860 | 3,367 Hz | 20,202 |
| 4S full | 16.8 | 32,760 | 3,822 Hz | 22,932 |
| 6S nominal | 22.2 | 43,290 | 5,051 Hz | 30,303 |
| 6S full | 25.2 | 49,140 | 5,733 Hz | 34,398 |
A 14-pole rotor has 7 pole pairs, so every turn of the shaft is 7 electrical cycles, and a six-step ESC switches the phases 42 times per turn.
About the 3D model
A generic outrunner drawn from AMAXinno’s published sizes: the 23 × 6 mm stator, 29 mm bell, 15.4 mm height, 5 mm shaft, 16 mm mounting circle and 12 teeth and 14 magnets. Anything AMAXinno doesn’t publish is typical for a motor this size, and the bell’s spoked top, the base and the inside are a generic design, not this motor’s. The colours are read off the maker’s product photos. There are no logos or markings: it is our drawing, not the maker’s.
Sources
- AMAX: Brushless Motor 2306 Competition Bando Freestyle (product page on AMAXshop, AMAXinno's own store: KV options, price, photos; the spec, drawing and thrust images below are on it). Retrieved Oct 19, 2026.
- AMAX: 2306 Competition specifications (image on the product page). Retrieved Oct 19, 2026.
- AMAX: 2306 Competition spec icons, giving the 1000 W peak power for under 10 s and the 700 W continuous power for over 10 s (image on the product page). Retrieved Oct 19, 2026.
- AMAX: 2306 Competition dimension drawing in mm (image on the product page). Retrieved Oct 19, 2026.
- AMAX: 2306 1750KV current and thrust by battery and prop (one figure each, with no throttle setting given), 4S to 6S (image on the product page). Retrieved Oct 19, 2026.
- AMAX: 2306 1850KV current and thrust by prop, 6S (one figure each, with no throttle setting given) (image on the product page). Retrieved Oct 19, 2026.
- AMAX: 2306 1950KV current and thrust by battery and prop (one figure each, with no throttle setting given), 4S to 6S (image on the product page). Retrieved Oct 19, 2026.
- AMAX: 2306 2050KV current and thrust by prop, 6S (one figure each, with no throttle setting given) (image on the product page). Retrieved Oct 19, 2026.
- AMAX: 2306 2150KV current and thrust by battery and prop (one figure each, with no throttle setting given), 4S to 6S (image on the product page). Retrieved Oct 19, 2026.
- AMAX: Highlights of Competition Motors (page linked from the product page; covers the whole Competition range: bell, base, magnets, stator, windings, bearings, shaft). Retrieved Oct 19, 2026.
- AMAX: 2306 Competition Bando main product photo (first image on the product page), used for finish. Retrieved Oct 19, 2026.
- AMAXinno: home page as archived by the Wayback Machine on 2021-10-28, whose SHOP links go to amaxshop.com (amaxinno.com no longer resolves). Retrieved Oct 19, 2026.
- AMAX: Brushless Motor 2306 Competition (product page on AMAXshop: the standard version, with the same spec, drawing and thrust images). Retrieved Oct 19, 2026.
- AMAX: 2306 Competition Bando photo of the base (second image on the product page), used for the base colour. Retrieved Oct 19, 2026.
