BetaFPV 0702SE II

Stator	0702
KV options	23000, 27000
Weight	1.45 g
Shaft	1mm
Max cells	1S
Dimensions	Ø9x12.75 mm
Mount (bolt circle, mm)	Ø6.6 (3-M1.4)
Max thrust	35.4 g
Price (approx.)	52.99 USD

At 1.45 g it is right at the class average across the 11 0702-class motors in our database (avg 1.49 g).

Best props for the 0702SE II

Gemfan 1210 2-blade, Gemfan 1208 3-blade or Gemfan 1219S 3-blade (31 mm whoop props, BetaFPV)

Thrust data (BetaFPV bench test)

KV	Prop	Battery	Throttle	Current	RPM	Thrust	Efficiency
23000	GF 1219S-3P	1S	10	0.15 A	—	0.55 g	0.92 g/W
23000	GF 1219S-3P	1S	20	0.57 A	—	2.7 g	1.18 g/W
23000	GF 1219S-3P	1S	30	1.01 A	—	5.48 g	1.36 g/W
23000	GF 1219S-3P	1S	40	1.42 A	—	8.93 g	1.57 g/W
23000	GF 1219S-3P	1S	50	1.83 A	—	12.3 g	1.68 g/W
23000	GF 1219S-3P	1S	60	2.3 A	—	16.08 g	1.75 g/W
23000	GF 1219S-3P	1S	70	2.67 A	—	20.56 g	1.93 g/W
23000	GF 1219S-3P	1S	80	3.12 A	—	24.5 g	1.96 g/W
23000	GF 1219S-3P	1S	90	3.49 A	—	27.5 g	1.97 g/W
23000	GF 1219S-3P	1S	100	4.19 A	—	32.0 g	1.91 g/W
27000	GF 1219S-3P	1S	10	0.22 A	—	0.7 g	0.8 g/W
27000	GF 1219S-3P	1S	20	0.77 A	—	2.76 g	0.9 g/W
27000	GF 1219S-3P	1S	30	1.39 A	—	5.94 g	1.07 g/W
27000	GF 1219S-3P	1S	40	1.92 A	—	9.65 g	1.26 g/W
27000	GF 1219S-3P	1S	50	2.42 A	—	13.69 g	1.41 g/W
27000	GF 1219S-3P	1S	60	2.9 A	—	18.35 g	1.58 g/W
27000	GF 1219S-3P	1S	70	3.34 A	—	22.4 g	1.68 g/W
27000	GF 1219S-3P	1S	80	3.86 A	—	26.9 g	1.74 g/W
27000	GF 1219S-3P	1S	90	4.32 A	—	30.92 g	1.79 g/W
27000	GF 1219S-3P	1S	100	5.2 A	—	35.4 g	1.7 g/W

Manufacturer bench figures (BetaFPV bench, 23000 and 27000 KV windings, one run each on a Gemfan 1219S-3P at 1S (4 V); 10 throttle points (10-100% in 10% steps) on each); real-world thrust varies with ESC, battery sag and prop condition.

0702SE II vs other 0702 motors on 1S

The same thrust costs different power on different motors. Each line is one maker's own bench series (1S, 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.

Motor	KV	Prop	Peak thrust	At 10 g	At 20 g
BetaFPV 0702SE II	27000	GF 1219S-3P	35 g at 21 W	8 W (1.27 g/W)	12 W (1.62 g/W)
Happymodel SE 0702	26000	Gemfan 40mm Bi-blade propeller	31 g at 16 W	4 W (2.38 g/W)	9 W (2.14 g/W)
BetaFPV 0702SE 0702 Brass Bushings	25000	GF-1208-3P	25 g at 12 W	6 W (1.55 g/W)	10 W (1.98 g/W)
BetaFPV Freestyle 0702	25000	GF 1207-3P	29 g at 15 W	5 W (1.84 g/W)	10 W (2.04 g/W)
VCI HOBBY Spark 0702	29000	GF 35mm-3	25 g at 16 W	8 W (1.31 g/W)	13 W (1.56 g/W)
BetaFPV 0702 II	30000	GF 1219S-3P	37 g at 21 W	8 W (1.32 g/W)	12 W (1.68 g/W)

Power at 10 g and 20 g is read off each maker's curve, straight-line between its two nearest bench points; 20 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 0702 motor: 0702 motors compared. How to read a bench table: reading motor bench tables.

Thrust-to-weight with this motor

Four BetaFPV 0702SE II motors at 35.4 g max thrust each give 141.6 g: 2:1, the minimum to fly, up to 70.8 g all-up; 4:1 (freestyle) up to 35.4 g; 8:1 (racing) up to 17.7 g.

RPM & prop speed on this motor

Flies on these BNF quads

BetaFPV Air65 (tiny whoop (racing))

Props in this motor's class

Prop	Size	Blades	Weight
weBLEEDfpv HQ Ultralight Whoop 31MM	1.22x1.0	3	0.16 g
HQProp 40MMX2 Ultralight 40mm Micro/Whoop	1.6x1.2	2	0.2 g
Gemfan 35MMS 3-Blade	1.4x0.96	3	0.24 g
HQProp 40mm Ultralight 3-Blade	1.6x1.0	3	0.25 g
HQProp Ultralight 31MMX3 31mm Micro/Whoop	1.22x1.0	3	0.27 g

Where this data comes from

Bench rows, dimensions and the prop list are from BetaFPV's own "Outline Drawing / Load Performance" sheet image for the 0702SE II on betafpv.com/products/0702-ii-brushless-motors, which heads itself "0702SE II 23000KV / 27000KV" and carries a ten-row table for each winding. Identity with our RaceDayQuads listing is four figures: both 23000 and 27000 KV, 1.45 g including the 35 mm connector, a 1 mm shaft and 1S. Max thrust is 35.4 g, the 27000 KV 100% row, where the page carried none - and the page's comparison table states exactly those two maxima, 32 g at 23000 KV and 35.4 g at 27000 KV, as the sheet's two 100% rows print them (32.00 and 35.40 g). Two source facts recorded rather than repaired: weight is stated per winding, 1.45 g at 23000 KV and 1.47 g at 27000 KV, and our page carries the 23000 KV figure our retail listing prints for both; and the lower winding is the more efficient one at every throttle point but the top, peaking at 1.97 g/W against 1.79. The Speed (RPM) and Coil temp columns are struck through on every row of both sheets - BetaFPV publishes neither - so every row here carries no RPM. Every row's Input (W) is voltage x current exactly and its printed Efficiency is thrust / that power to the hundredth. The outline drawing puts three M1.4 holes on a 6.6 mm bolt circle ("3-M1.4EQS", the spec block's "Hole Distance: 6.6mm"), which is a bolt circle and not a mount span, so mount_mm stays empty; it also gives the body as O9 x 12.75 mm overall, 8.55 mm of body plus a 4.2 mm shaft, a 1 mm shaft over a 1.5 mm boss and a 35 mm 30AWG JST 1.25 3-pin lead. Recommended props are BetaFPV's own list, replacing our derived whoop-prop class. One product page sells three windings: 30000 KV is the 0702 II, 23000 and 27000 KV the 0702SE II, which is our separate page.