AeroScout S2 // Modified Build Lab

// 01 AIRCRAFT

HobbyZone AeroScout S 2 1.1m

Modified pusher trainer. Stock airframe, upgraded power system. All builds share this platform.

Airframe

Wingspan1095mm / 43.1"

Length870mm / 34.25"

Fuselage (bare)227.4g

ConstructionEPO Foam

ConfigPusher

Landing GearREMOVED (-18.6g mechanism + rod/tire)

Motor Mount16x16mm

Max Prop6" (with clearance)

Weight Breakdown (estimated)

Fuselage (bare)227.4g

Wings + servos~200g

Motor (XING2 2207)31.6g

ESC (ZTW 60A)~35g

Receiver + wiring~30g

Dry weight (no batt)~524g

Battery (4S 1500)177g

AUW (all-up)~710g

Stock Specs (for reference)

Stock Motor2306-2250KV

Stock ESCAvian 30A

Stock Battery3S 2200mAh

Stock Weight639g (no batt)

Stock ServosSpektrum 8g ×4

SAFE ModesBeginner/Inter/Expert

Stock Thrust~800g

Stock Price$269 RTF / $199 BNF

Known Issues

■ Motor bogs under sustained load — 2207 stator lacks torque for 5045 at speed

■ Servo blow-back in high-speed dives — stock 8g servos can't hold control surfaces

■ Motor wire gauge mismatch — 20AWG motor leads in 3.5mm bullet connectors

■ Motor heat melts hard plastic mount — sustained full throttle softens the hard plastic mount, motor sinks in. Screws feel loose but mount is actually deformed.

■ Long batteries cause CG issues — must use short-form packs for proper balance

// 02 BATTERY & BALANCE

Weight, Balance & Battery Fit

The AeroScout CG is 67-70mm from the wing leading edge. Long batteries throw it off. Short-form packs only. Good news: 5S short packs exist that nearly match the current 4S.

Why this matters: Pusher config = motor weight at the rear. Battery sits forward to balance. A longer/heavier battery shifts CG forward (slightly nose heavy = okay). A battery that's the wrong shape won't seat properly and creates unpredictable CG shifts.

Battery	Config	Capacity	C-Rate	Length	Width	Height	Weight	CG Impact	Price
Zeee Graphene 120C	4S	1500mAh	120C	70mm	35.5mm	36.5mm	177g	CURRENT — baseline	~$25 (2pk)
OVONIC 5S 100C	5S	1300mAh	100C	72mm	35mm	37mm	188g	+11g, +2mm — negligible	~$18
OVONIC Rebel 2.0 130C	5S	1300mAh	130C	~74mm	~36mm	~38mm	~195g	+18g — minimal shift	~$22
GOLDBAT 5S 100C	5S	1300mAh	100C	72mm	35mm	39mm	200g	+23g, +2.5mm tall — check fit	~$17
DOGCOM 5S 150C	5S	1300mAh	150C	79mm	39.5mm	26mm	~190g	Flat profile, +9mm long — may shift CG	~$25
DXF 5S 60C	5S	1100mAh	60C	62mm	25mm	42mm	109g	-68g lighter — tail heavy risk. Low C-rate.	~$15
GOLDBAT 5S 100C	5S	1500mAh	100C	72mm	35mm	44mm	228g	+51g, +7.5mm tall — more flight time but tight fit	~$20

BEST MATCH

OVONIC 5S 1300mAh 100C — virtually identical dimensions to the current Zeee 4S. Only +2mm longer, +0.5mm taller, +11g heavier. CG won't change. 100C × 1.3Ah = 130A burst, way more than the 42A your RSIII 2100KV draws.

HIGHER C-RATE

OVONIC Rebel 2.0 5S 1300mAh 130C — slightly larger but still short-form. Better sustained discharge for streamer pulls. Worth the extra $4 if available.

AVOID

DXF 5S 1100mAh 60C — too light (tail-heavy CG shift on a pusher) and 60C is borderline for aggressive flying. Also avoid any long-form "stick" packs that won't seat properly.

Balance tip: After swapping to 5S, verify CG at 67-70mm from wing leading edge. If slightly nose heavy, that's fine on a pusher — it's self-correcting. If tail heavy, slide battery forward in the compartment or add ~5-10g of nose weight.

// 03 BUILD COMPARISONS

Choose Your Build

BATTERY Zeee 4S 1500mAh 120C

WEIGHT 177g

AUW ~710g

Motor	KV	RPM	Tip Speed	Thrust	Amps	T:W	Character
NIN PLUS 2306.5	2750	~35,600	236 m/s	1,900g	~52A	2.7:1	Matches 2207 scream + MORE thrust
Flash 2306	2550	~33,000	219 m/s	1,750g	~46A	2.5:1	N52SH + 220°C wire — holds power
XING2 2306	2555	~33,000	219 m/s	1,750g	~46A	2.5:1	N52H + titanium shaft — race-proven
XING2 2207	2755	~35,500	236 m/s	1,500g	~40A	2.1:1	2207 stator — bogs at top end with 5" props
RSIII 2306	2500	~32,300	215 m/s	1,700g	~45A	2.4:1	Close to old 2306, won't bog
MAD Spark FS2407	2600	~33,600	223 m/s	1,800g	~46A	2.5:1	220°C wire + 27% stator + titanium shaft
F80 Pro 2408	2500	~34,000	226 m/s	1,850g	~47A	2.6:1	+45% stator, wire temp unknown

Best Overall (4S)

MAD Spark FS2407 2600KV — 220°C wire + 27% bigger stator + matches old 2306 scream + titanium shaft. The only high-KV motor with both proven wire and larger stator. ~$25.

Proven Durability

Flash 2306 2550KV — 220°C wire. Proven brand.

Max RPM (4S)

NIN PLUS 2306.5 2750KV — same pitch, N54 magnets, 220°C wire. ~52A runs warm.

BATTERY Zeee 4S 1500mAh 120C

WEIGHT 177g

AUW ~710g

Note: 6" props need lower KV to avoid burning motors. 6045 bullnose props available — retains aggressive bark character at a lower frequency.

Motor	KV	RPM	Tip Speed	Thrust	Amps	T:W	Character
RSIII 2306	1800	~23,300	186 m/s	1,300g	~32A	1.8:1	Noticeably deeper tone
Flash 2306	1750	~22,600	181 m/s	1,200g	~30A	1.7:1	Deep growl, bullnose helps
NIN PLUS 2306.5	1750	~22,600	181 m/s	1,200g	~30A	1.7:1	Deep growl, bullnose helps
MAD Spark FS2407	1900	~24,600	197 m/s	1,600g	~38A	2.3:1	220°C wire + 27% stator, handles 6" easy
F80 Pro 2408	1900	~24,600	197 m/s	1,650g	~38A	2.3:1	+45% stator, wire temp unknown

Best 6" Pick

MAD Spark FS2407 1900KV — 1,600g on 6045 at 38A with 220°C wire and 27% more stator. Best transparent option for 6".

Best 2306 Option

Flash/NIN PLUS 1750KV — ~30A, 220°C wire. Motor will outlast the airframe on 6".

Coolest Running

Flash/NIN PLUS 1750KV — ~30A, 220°C wire. Motor will outlast the airframe.

BATTERY 5S 1300mAh ~120C

WEIGHT ~200g

AUW ~733g

THE SWEET SPOT. 5S delivers same power at lower current. Motor runs cooler. Throttle response is snappier. And the Bulldog still screams.

Motor	KV	RPM	Tip Speed	Thrust	Amps	T:W	Character
NIN PLUS 2306.5	2450	~39,600	263 m/s	2,200g	~60A	3.0:1	ESC LIMIT — insane thrust
RSIII 2306	2100	~34,000	226 m/s	1,800g	~42A	2.5:1	Between both refs, won't bog
Flash 2306	1750	~28,300	188 m/s	1,300g	~28A	1.8:1	Very cool, less scream
NIN PLUS 2306.5	1750	~28,300	188 m/s	1,300g	~28A	1.8:1	Very cool, less scream
MAD Spark FS2407	1900	~30,700	204 m/s	1,650g	~33A	2.3:1	220°C wire + 27% stator, 33A = bulletproof
F80 Pro 2408	2200	~35,600	236 m/s	1,950g	~42A	2.7:1	Matches 2207 scream, +45% stator, wire unknown
Flash 2406	1950	~31,500	209 m/s	1,600g	~35A	2.2:1	220°C + N52SH + NMB, close to old 2306

BEST 2306 PICK

RSIII 2306 2100KV — between both reference motors in sound, more thrust than 2207, cooler, snappier 5S throttle.

BEST TRANSPARENT PICK

MAD Spark FS2407 1900KV on 5S — 220°C wire + 27% bigger stator + titanium shaft. Only 33A = motor will survive anything. Slightly softer sound (-7%).

MAX THRUST (wire unknown)

F80 Pro 2408 2200KV on 5S — matches 2207 scream, 1,950g thrust, 42A. 45% more stator. Wire temp not published.

BATTERY 5S 1300mAh ~120C

WEIGHT ~200g

AUW ~733g

Note: 6045 bullnose available. Keeps bark character at lower pitch. 6" on 5S gives comparable thrust to 5" on 4S with way better efficiency.

Motor	KV	RPM	Tip Speed	Thrust	Amps	T:W	Character
RSIII 2306	1800	~23,300	186 m/s	1,600g	~38A	2.2:1	Deeper, comfortable margins
Flash 2306	1750	~22,600	181 m/s	1,500g	~35A	2.0:1	Deep growl, runs very cool
NIN PLUS 2306.5	1750	~22,600	181 m/s	1,500g	~35A	2.0:1	Deep growl, runs very cool
MAD Spark FS2407	1900	~24,600	197 m/s	1,800g	~38A	2.5:1	220°C wire + big stator, best 6" combo
F80 Pro 2408	1900	~24,600	197 m/s	1,900g	~40A	2.6:1	Max stator, wire temp unknown

Best 6" + 5S Pick

MAD Spark FS2407 1900KV — 1,800g on 6045 at 38A with 220°C wire. Transparent specs, titanium shaft, 27% bigger stator.

Best 2306 Option

RSIII 2306 1800KV — 1,600g at 38A. N52SH magnets, EZO bearings, comfortable margins.

Coolest Runner

Flash/NIN 1750KV — 1,500g at only 35A. 220°C wire insurance.

THE BOTTOM LINE

5S is worth it. More voltage means more power at lower current — motors run cooler, throttle response is snappier, and you get headroom to grow. The OVONIC 5S 1300mAh is nearly the same size as a 4S 1500mAh pack.

Servo upgrade is mandatory. Stock 8g plastic-gear servos can't hold control surfaces at these speeds. Emax ES09MD HV on 6V BEC — same footprint, 73% more torque, eliminates dive blow-back.

Heat kills motors on this mount. The 16mm hard plastic mount softens under sustained load. Fix: sandwich a thin aluminum plate (0.5-1mm) between motor and mount — a soda can works. Lower KV builds also help by pulling fewer amps.

Direct solder motor-to-ESC. The stock bullet connectors add resistance and heat. Solder direct or crimp proper 3.5mm bullets with heat shrink.

// 04 MOTOR OPTIONS

The Shortlist

All 16x16mm mount, all racing/freestyle grade. These are built for fast spool-up and aggressive throttle — avoid "cinematic" motors (smooth throttle, heavy rotors, slow response). Priority: 220°C wire, N52SH+ magnets, Japanese bearings.

MINIMUM SPECS FOR AGGRESSIVE FLYING

Stator: 2306+ (2207 bogs with 5" props)

Magnets: N52H min, N52SH preferred

Wire: 220°C (180°C degrades fast)

Bearings: EZO, NSK, or NMB

Mount: 16×16mm (airframe constraint)

Style: Racing/Freestyle only — no cinematic

2306

FlyFishRC Flash 2306

1750 / 2550 KV

MagnetsN52SH
Wire220°C
BearingsNMB
Weight~33g

~$20-22

2306.5

Flywoo NIN PLUS 2306.5

1750 / 2450 / 2750 KV

MagnetsN54
Wire220°C
BearingsNSK
Weight~33g
Stator23x6.5mm (+8% vol)

~$27

2306

Emax RSIII 2306

1800 / 2100 / 2500 KV

MagnetsN52SH
WireUnspec
BearingsEZO (JP)
Weight~30g

~$19

2407 STANDOUT

MAD Spark FS2407

1900 / 2600 KV

Magnets150°C rated
Wire220°C
Bearings684ZZ
ShaftTitanium
Stator24x7mm (+27% vol)
Weight~35g

~$25

2406

FlyFishRC Flash 2406

1800 / 1950 KV

MagnetsN52SH
Wire220°C
BearingsNMB
Stator24x6mm (+9% vol)
Weight42g

~$24

2407 PREMIUM

Lumenier ZIP V2 2407

1700 / 2550 KV

MagnetsN52SH
WireUnspec
BearingsNMB (JP)
ShaftTitanium
Stator24x7mm (+27% vol)
Weight34g

~$28

2408 MAX STATOR

T-Motor F80 Pro 2408

1900 / 2200 / 2500 KV

MagnetsN52H
WireUnspec
BearingsEZO
Stator24x8mm (+45% vol)
Weight36.4g
Peak47.6A / 706W

~$28

// 05 SERVO UPGRADES

Servos That Survive

Stock Spektrum SPMSA390: 8g, ~1.5kg/cm, plastic gears. At these speeds, the control surfaces can't hold. Set BEC to 6V for max torque.

Servo	Torque @ 6V	Speed @ 6V	HV Range	Weight	Dims (mm)	Special	Price	Buy
Emax ES09MD HV	2.6 kg/cm	0.08s/60°	6–8.4V	14.8g	23×12×24.5	Same footprint as stock, best value	$9-17	Emax • Amazon
KST X08 V6.0 HV	2.8 kg/cm	0.09s/60°	3.8–8.4V	8g	23.5×8×16.8	Programmable, lightest, glider-grade precision	~$45	Amazon • KST
KST X12-508 HV	4.2 kg/cm	0.09s/60°	4.8–8.4V	20g	23×12×27.5	Most torque @ 6V, coreless, full metal gears, dual ball bearings	~$36	KST • Amazon
KST DS215MG V8	3.7 kg/cm @7.4V	0.05s/60°	6–7.4V	20g	23×12×27.5	Fastest micro servo made, stainless gears, monster torque	~$65	Amazon • KST
FrSky Xact D5701	2.3 kg/cm	0.09s/60°	3.5–6V	6.5g	20.2×6×23	Hall sensor, programmable via FrSky radio, CNC alloy, ultra-light	~$54	FrSky • Turbines RC
Savox SH-0257MG	2.2 kg/cm	0.09s/60°	4.8–6V	14g	22.8×12×25.4	Premium brand, 1 ball bearing	$30-40	Amazon

Best Value

Emax ES09MD HV — more torque than FrSky Xact at 1/4 the price. 0.08s is the fastest response of all options. Same 23x12mm footprint as stock. ~$48-68 for all 4.

Premium Upgrade

KST X08 V6.0 HV — only 8g (lightest option), 2.8 kg/cm torque, programmable endpoints. Glider-grade precision at a premium price. ~$180 for all 4.

Torque King

KST X12-508 HV — 4.2 kg/cm at 6V, most holding force on this list. Same 23×12mm footprint as the Emax. Coreless motor, full metal gears. ~$144 for all 4.

Overkill (in a good way)

KST DS215MG V8 — 3.7 kg/cm torque at 0.05s/60°. Nothing will blow these back in a dive. At 20g they're heavier but unstoppable. ~$260 for all 4.

Designed for Gliders

FrSky Xact D5701 — beautiful engineering with hall sensor and CNC alloy. But only 2.3 kg/cm — less torque than the $12 Emax. Built for precision, not fighting high-speed airflow.

// 07 PARTS

Parts & Pricing

Full build pricing and direct buy links for every component.

Build A: Match the Scream

4S + 5045 // Flash 2306 2550KV

MotorFlash 2306 2550KV~$22

ESCZTW Beatles G2 60A~$30

BatteryZeee 4S 1500mAh (2pk)~$25

Servos ×4Emax ES09MD HV~$48-68

Props5045 Bulldog (set of 4)~$8

Build B: The Sweet Spot

5S + 5045 // RSIII 2306 2100KV — RECOMMENDED

MotorRSIII 2306 2100KV~$19

ESCZTW Beatles G2 60A~$30

BatteryOVONIC 5S 1300mAh~$18

Servos ×4Emax ES09MD HV~$48-68

Props5045 Bulldog (set of 4)~$8

Build C: Bulletproof 5S

5S + 5045 // NIN PLUS 2306.5 1750KV + spare

MotorNIN PLUS 2306.5 1750KV~$27

Spare MotorNIN PLUS 1750KV~$27

ESCZTW Beatles G2 60A~$30

BatteryOVONIC 5S 1300mAh~$18

Servos ×4Emax ES09MD HV~$48-68

Props5045 Bulldog (set of 4)~$8

Build D: 6-inch Experiment

5S + 6045 // RSIII 2306 1800KV

MotorRSIII 2306 1800KV~$19

ESCZTW Beatles G2 60A~$30

BatteryOVONIC 5S 1300mAh~$18

Servos ×4Emax ES09MD HV~$48-68

Props6045 bullnose~$8-12

Everything You Need

Direct links to every component. All builds share the same ESC, servos, and airframe.

Motors (16x16mm mount)

Motor	KV Options	Key Specs	Price	Buy
FlyFishRC Flash 2306	1750 / 2550	N52SH, 220°C wire, NMB	~$20-22	FlyFishRC
Flywoo NIN PLUS 2306.5	1750 / 2450 / 2750	N54, 220°C wire, NSK	~$27	Amazon
Emax RSIII 2306	1800 / 2100 / 2500	N52SH, EZO bearings	~$19	Pyrodrone
iFlight XING2 2306	1755 / 2555	N52H, titanium shaft, NSK	~$29	iFlight • WREKD
iFlight XING2 2207	2755	N52H, titanium shaft — 2207 stator bogs with 5"	~$22	iFlight
MAD Spark FS2407	1900 / 2600	220°C wire, titanium shaft, 24x7mm (+27%)	~$25	MAD Motor • Amazon
FlyFishRC Flash 2406	1800 / 1950	N52SH, 220°C wire, NMB, 24x6mm (+9%)	~$24	FlyFishRC • Pyrodrone
Lumenier ZIP V2 2407	1700 / 2550	N52SH, NMB (JP), titanium, 24x7mm (+27%)	~$28	Lumenier
T-Motor F80 Pro 2408	1900 / 2200 / 2500	N52H, EZO, 24x8mm stator (+45%)	~$28	WREKD • Pyrodrone

ESCs

ESC	Amps	Voltage	BEC	Price	Buy
ZTW Beatles G2 60A (CURRENT)	60A cont / 80A burst	2-6S	SBEC 5V/6V 8A	~$30	Amazon
Hobbywing Skywalker V2 60A	60A cont / 80A burst	2-6S	SBEC 5A	~$35	Amazon

ESC Programming Cards

Card	Compatible With	Price	Buy
ZTW LCD Programming Card G2	Beatles G2 / Mantis G2 / Shark G2 series (32-bit only)	~$12	Amazon
ZTW Air ESC Programming Card	Original Beatles series (non-G2)	~$6	Amazon

Batteries (short-form packs for CG balance)

Battery	Config	Capacity	C-Rate	Dims (mm)	Weight	Buy
Zeee 4S Graphene 120C (CURRENT)	4S	1500mAh	120C	70×35.5×36.5	177g	Amazon (2pk)
OVONIC 5S 100C BEST 5S MATCH	5S	1300mAh	100C	72×35×37	188g	Amazon

Servos

Servo	Torque @ 6V	Speed @ 6V	Weight	Price	Buy
Emax ES09MD HV BEST VALUE	2.6 kg/cm	0.08s/60°	14.8g	$9-17	Emax USA • Amazon
KST X12-508 HV MOST TORQUE	4.2 kg/cm	0.09s/60°	20g	~$36	KST • Amazon
Savox SH-0257MG	2.2 kg/cm	0.09s/60°	14.0g	$30-40	Amazon

Propellers

Prop	Size	Type	Buy
Master Airscrew BN-FPV 5x4.5	5045	Bullnose bi-blade (set of 4)	MasterAirscrew
6045 Bullnose bi-blade	6045	Bullnose bi-blade (10 pairs)	RCDrone

Build Comparison Lab

HobbyZone AeroScout S 2 1.1m

Airframe

Weight Breakdown (estimated)

Stock Specs (for reference)

Known Issues

Weight, Balance & Battery Fit

Choose Your Build

The Shortlist

FlyFishRC Flash 2306

Flywoo NIN PLUS 2306.5

Emax RSIII 2306

MAD Spark FS2407

FlyFishRC Flash 2406

Lumenier ZIP V2 2407

T-Motor F80 Pro 2408

Servos That Survive

Dial In Your Setup

Parts & Pricing

Everything You Need

Motors (16x16mm mount)

ESCs

ESC Programming Cards

Batteries (short-form packs for CG balance)

Servos

Propellers