FlyFishRC Flash 2806.5

FlyFishRC Flash 2806.5
Image: racedayquads.com
Stator2806.5
KV options1350, 1850
Weight48.3 g
Shaft5mm
Max cells4-6S
Configuration12N14P
Dimensions34.6x33.5 mm
Mount19x19mm
Max thrust2382.6 g
Price (approx.)26.89 USD

At 48.3 g it is right at the class average across the 5 2806-class motors in our database (avg 47.2 g).

Thrust data (FlyFishRC bench test)

KVPropBatteryThrottleCurrentRPMThrustEfficiency
1350 HQ J75 6S 50 9.33 A 12083 781.8 g 3.5 g/W
1350 HQ J75 6S 60 14.26 A 14305 1072.5 g 3.15 g/W
1350 HQ J75 6S 70 20.5 A 16388 1391.3 g 2.85 g/W
1350 HQ J75 6S 80 28.75 A 17859 1642.8 g 2.41 g/W
1350 HQ J75 6S 90 34.13 A 19443 1941.1 g 2.41 g/W
1350 HQ J75 6S 100 44.05 A 20466 2159.2 g 2.08 g/W
1350 GF 7042 6S 50 9.06 A 12117 817.4 g 3.76 g/W
1350 GF 7042 6S 60 14.04 A 14402 1124.9 g 3.35 g/W
1350 GF 7042 6S 70 19.58 A 16547 1466.7 g 3.15 g/W
1350 GF 7042 6S 80 28.04 A 18086 1658.7 g 2.5 g/W
1350 GF 7042 6S 90 34.71 A 19666 2063.4 g 2.53 g/W
1350 GF 7042 6S 100 44.75 A 20564 2171.3 g 2.07 g/W
1850 HQ J75 6S 50 21.07 A 14852 — —
1850 HQ J75 6S 60 32.58 A 17041 1506.3 g 1.97 g/W
1850 HQ J75 6S 70 41.4 A 18010 1680.6 g 1.75 g/W
1850 HQ J75 6S 80 44.68 A 19895 2039.7 g 1.97 g/W
1850 HQ J75 6S 90 52.97 A 20865 2228.2 g 1.83 g/W
1850 HQ J75 6S 100 59.73 A 21440 2357.6 g 1.72 g/W
1850 GF 7042 6S 50 21.02 A 14951 — —
1850 GF 7042 6S 60 32.53 A 17142 — —
1850 GF 7042 6S 70 41.35 A 18112 1693.6 g 1.77 g/W
1850 GF 7042 6S 80 44.63 A 19998 2054.7 g 1.99 g/W
1850 GF 7042 6S 90 52.92 A 20969 2246.2 g 1.85 g/W
1850 GF 7042 6S 100 60.02 A 21605 2382.6 g 1.73 g/W

Manufacturer bench figures (FlyFishRC bench, 24 V (6S), 1350 and 1850 KV on two 7in props, 50-100% throttle in tens); real-world thrust varies with ESC, battery sag and prop condition.

Flash 2806.5 vs other 2806 motors on 6S

The same thrust costs different power on different motors. Each line is one maker's own bench series (6S, its own prop), drawn as grams of thrust per watt against thrust, so a higher line makes that thrust for less battery current. Throttle percent is left out on purpose: it means something different on every maker's rig.

024605001000150020002500 thrust, g g/W
MotorKVPropPeak thrust At 2150 g
FlyFishRC Flash 2806.5 1350 GF 7042 2171 g at 1051 W 1004 W (2.14 g/W)
BrotherHobby Avenger 2806.5 1300 HQ 7.0*3.5*3 2520 g at 1057 W 811 W (2.65 g/W)
T-Motor F90 2806.5 1300 HQProp HQ7040.3 2361 g at 1059 W 832 W (2.59 g/W)
iFlight Xing 2806.5 Race 1800 HQ 7*4*3 2640 g at 1651 W 1178 W (1.83 g/W)

Power at 2150 g is read off each maker's curve, straight-line between its two nearest bench points; 2150 g is the highest thrust every motor here reached. Different props and rigs move these curves as much as the motor does, so compare rows on a similar prop. Peak thrust of every 2806 motor: 2806 motors compared. How to read a bench table: reading motor bench tables.

Thrust-to-weight with this motor

Four FlyFishRC Flash 2806.5 motors at 2382.6 g max thrust each give 9530.4 g: 2:1, the minimum to fly, up to 4765.2 g all-up; 4:1 (freestyle) up to 2382.6 g; 8:1 (racing) up to 1191.3 g.

RPM & prop speed on this motor

Props in this motor's class

PropSizeBladesWeight
APC 7x4 SF-B4 2-Blade 7.0x4.0 2 5.1 g
HQProp 7x5.5x2 7.0x5.5 2 6.4 g
Gemfan Cinelifter 7035 7x3.5x3 7.0x3.5 3 6.5 g
HQProp 7x4.5x2 Durable 7.0x4.5 2 6.6 g
HQProp MacroQuad 7x4.5 Glass Fiber Nylon CCW 7.0x4.5 2 6.8 g

Where this data comes from

Bench rows are FlyFishRC's own "Test report", the single description image the retail listing carries (the maker's site disallows this fetcher by name in robots.txt); the same image carries the spec table and the product drawing. Two windings at 24 V (6S) on HQ J75 and GF 7042, 50-100% throttle in tens. The sheet's 1850 KV block maxima - 2382.6 g, 1373.3 W, 60.02 A, the three figures the listing prints - are the GF 7042 100% row, and its 1350 KV block (2171.3 g, 1050.7 W, 44.75 A) is that winding's GF 7042 100% row. Only 1850 KV is sold on this listing; 1350 KV comes from the sheet and weighs 48 g against the 48.3 g published here. Three rows print an impossible thrust - 11059.6 g at 1850 KV / HQ J75 / 50%, 11070.6 g and 11071.6 g at 1850 KV / GF 7042 / 50% and 60% - and each prints an efficiency computed from it (22.12, 22.23 and 14.54 g/W), so both cells are left empty on those rows rather than repaired; their voltage, current, RPM and power are the sheet's and are kept. The product drawing marks the mount as "Ø 19" with a 4-M3 leader, a bolt circle, where the listing's spec block prints "Mounting pattern: 19x19mm", a square; the published figure is left as the block states it.

Related 2806-class motors

Guides