AeroScout S2 // Modified Build Lab

TL;DR — THE RECOMMENDED BUILD

Emax RSIII 2306 2100KV + 5S 1300mAh + 5045 Bulldog

THRUST1,800g

AMPS~42A

T:W RATIO2.5:1

SOUNDSAME SCREAM

TOTAL COST~$92-117

MOTOR LIFEMUCH LONGER

Same Bulldog bark as your current 2207. More thrust than the old 2306. Runs 3A cooler. 5S delivers snappier throttle. Keeps the scream, stops killing motors.

ULTIMATE OPTION: T-Motor F80 Pro 2408 2200KV + 5S — same scream (236 m/s), 1,950g thrust, 42A, but with 45% more stator volume. The motor that won't melt your mount. ~$28.

// 00 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 GearTricycle, steerable nose

Motor Mount16x16mm

Max Prop6" (with clearance)

Current Power System

MotorXING2 2207 2755KV

ESCZTW Beatles 60A

BECSBEC 5V/6V 8A

BatteryZeee 4S 1500mAh 120C

Prop5045 Bulldog bi-blade

ServosSpektrum 8g (stock)

AUW~710g

ConnectorXT60

Performance (Current Setup)

Max Thrust~1,500g

Max Amps~40A

Thrust:Weight2.1:1

Tip Speed237 m/s

Flight Time~3-4 min (aggressive)

CG67-70mm from LE

SoundHIGH SCREAM

IssueBogs at top end

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

■ 4 motors burned in 2 years — sustained full throttle + streamer pulls + prop experiments

■ 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

// 01 REFERENCE BUILDS

Two Baselines, One Sound

Every comparison is measured against both motors. The 2207 is louder but bogs. The 2306 is slightly lower pitch but holds power. The ideal sits between them.

REF A // CURRENT

XING2 2207 2755KV

"Screams loud but runs out of steam at top end"

Loaded RPM~35,600

Tip Speed237 m/s

Thrust1,500g

Max Amps~40A

T:W Ratio2.1:1

AUW~710g

REF B // OLD FAVORITE

XING Pro 2306 2555KV

"Lower pitch than 2207 but never gave out on long pulls"

Loaded RPM~33,000

Tip Speed219 m/s

Thrust1,700g

Max Amps~45A

T:W Ratio2.4:1

AUW~710g

// 02 MOTOR OPTIONS

The Shortlist

All 16x16mm mount. Priority: 220°C wire, N52SH+ magnets, Japanese bearings. Motors that survive streamer pulls.

MOTOR A

FlyFishRC Flash 2306

1750 / 2550 KV

MagnetsN52SH
Wire220°C
BearingsNMB
Weight~33g

~$20-22

MOTOR B

Flywoo NIN PLUS 2306.5

1750 / 2450 / 2750 KV

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

~$27

MOTOR C

iFlight XING 2306

1700 / 2450 / 2750 KV

MagnetsN52SH
Wire220°C
BearingsNSK
Weight~32g

~$17-21

MOTOR D

Emax RSIII 2306

1800 / 2100 / 2500 KV

MagnetsN52SH
WireUnspec
BearingsEZO (JP)
Weight~30g

~$19

MOTOR F — LARGER STATOR

T-Motor F80 Pro 2408

1900 / 2200 / 2500 KV

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

~$28

MOTOR G — LARGER STATOR

Lumenier JB2407 Bardwell

1750 / 2500 KV

MagnetsN52SH
WireUnspec
BearingsSteel 9x4x4
Stator24x7mm (+27% vol)
Weight35g

~$25

MOTOR E

Emax ECO II 2306

1700 / 1900 / 2400 KV

MagnetsN52SH
WireUnspec
BearingsEZO (JP)
Weight~33g

~$16

// 03 BUILD COMPARISONS

Every Combination, Measured

BATTERY Zeee 4S 1500mAh 120C

WEIGHT 177g

AUW ~710g

Motor	KV	RPM	Tip Speed	Thrust	Amps	T:W	vs 2207	vs 2306	Character
NIN PLUS 2306.5 (B)	2750	~35,600	236 m/s	1,900g	~52A	2.7:1	SAME	+8%	Matches 2207 scream + MORE thrust
Flash 2306 (A)	2550	~33,000	219 m/s	1,750g	~46A	2.5:1	-8%	SAME	Matches old 2306 — holds power
XING 2306 (C)	2750	~35,600	236 m/s	1,900g	~52A	2.7:1	SAME	+8%	Matches 2207 scream + MORE thrust
RSIII 2306 (D)	2500	~32,300	215 m/s	1,700g	~45A	2.4:1	-9%	-2%	Close to old 2306, won't bog
NIN PLUS 2306.5 (B)	2450	~31,700	211 m/s	1,650g	~43A	2.3:1	-11%	-4%	Quieter but efficient
ECO II 2306 (E)	2400	~31,000	206 m/s	1,600g	~41A	2.3:1	-13%	-6%	Budget, runs cool
F80 Pro 2408 (F)	2500	~34,000	226 m/s	1,850g	~47A	2.6:1	-5%	+3%	+45% stator vol, handles heat
JB2407 Bardwell (G)	2500	~33,500	222 m/s	1,800g	~45A	2.5:1	-6%	+1%	+27% stator vol, N52SH

Match Current 2207 Scream

NIN PLUS or XING 2306 2750KV — same pitch but with 2306 torque so it won't bog. ~52A, runs warm.

Match Old 2306 Feel

Flash 2306 2550KV — same sound as old favorite, holds power on long pulls. 220°C wire.

Larger Stator Pick

F80 Pro 2408 2500KV — 45% more thermal mass, same scream as old 2306, rated for 47.6A so it won't cook on streamer pulls. +$6 over a 2306.

Budget

ECO II 2306 2400KV — slightly softer but half the price. Buy two.

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	vs 2207	vs 2306	Character
ECO II 2306 (E)	1900	~24,600	197 m/s	1,400g	~36A	2.0:1	-17%	-10%	Deeper but still aggressive
RSIII 2306 (D)	1800	~23,300	186 m/s	1,300g	~32A	1.8:1	-22%	-15%	Noticeably deeper tone
Flash 2306 (A)	1750	~22,600	181 m/s	1,200g	~30A	1.7:1	-24%	-17%	Deep growl, bullnose helps
NIN PLUS 2306.5 (B)	1750	~22,600	181 m/s	1,200g	~30A	1.7:1	-24%	-17%	Deep growl, bullnose helps
XING 2306 (C)	1700	~22,000	176 m/s	1,100g	~28A	1.5:1	-26%	-20%	Quietest option
F80 Pro 2408 (F)	1900	~24,600	197 m/s	1,600g	~38A	2.3:1	-17%	-10%	Big stator handles 6" easily
JB2407 Bardwell (G)	1750	~22,600	181 m/s	1,400g	~32A	2.0:1	-24%	-17%	+27% vol, cool on 6"

Larger Stator Pick (6")

F80 Pro 2408 1900KV — 1,600g thrust on a 6045 at only 38A. The 2306 gives 1,400g at the same amps. +200g free thrust from the bigger stator.

Best 2306 Option

ECO II 2306 1900KV — ~36A, motor stays happy. Best 6" performance on 4S from a 2306.

Coolest Running

Flash/NIN PLUS 1750KV — ~30A, very safe. 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	vs 2207	vs 2306	Character
NIN PLUS 2306.5 (B)	2450	~39,600	263 m/s	2,200g	~60A	3.0:1	+11%	+20%	ESC LIMIT — insane thrust
RSIII 2306 (D)	2100	~34,000	226 m/s	1,800g	~42A	2.5:1	-5%	+3%	Between both refs, won't bog
ECO II 2306 (E)	1900	~30,700	204 m/s	1,550g	~33A	2.1:1	-14%	-7%	Cool running, still punchy
Flash 2306 (A)	1750	~28,300	188 m/s	1,300g	~28A	1.8:1	-21%	-14%	Very cool, less scream
NIN PLUS 2306.5 (B)	1750	~28,300	188 m/s	1,300g	~28A	1.8:1	-21%	-14%	Very cool, less scream
XING 2306 (C)	1700	~27,500	183 m/s	1,250g	~26A	1.7:1	-23%	-16%	Quietest, coolest
F80 Pro 2408 (F)	2200	~35,600	236 m/s	1,950g	~42A	2.7:1	SAME	+8%	MATCHES 2207 scream, won't bog or burn
F80 Pro 2408 (F)	1900	~30,700	204 m/s	1,650g	~33A	2.3:1	-14%	-7%	Conservative, motor lasts forever
JB2407 Bardwell (G)	1750	~28,300	188 m/s	1,400g	~28A	1.9:1	-21%	-14%	N52SH, very cool, less scream

BEST 2306 PICK

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

ULTIMATE PICK (Larger Stator)

F80 Pro 2408 2200KV on 5S — matches 2207 scream EXACTLY (236 m/s), 1,950g thrust at 42A. 45% more thermal mass = survives streamer pulls. ~$28.

Budget Cool-Runner

ECO II 2306 1900KV — softer but only 33A. Buy two for the price of one F80 Pro.

Avoid

2450KV+ on 5S — exceeds 60A ESC limit on any stator size.

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	vs 2207	vs 2306	Character
ECO II 2306 (E)	1900	~24,600	197 m/s	1,700g	~42A	2.3:1	-17%	-10%	Deeper bark, strong thrust
RSIII 2306 (D)	1800	~23,300	186 m/s	1,600g	~38A	2.2:1	-22%	-15%	Deeper, comfortable margins
Flash 2306 (A)	1750	~22,600	181 m/s	1,500g	~35A	2.0:1	-24%	-17%	Deep growl, runs very cool
NIN PLUS 2306.5 (B)	1750	~22,600	181 m/s	1,500g	~35A	2.0:1	-24%	-17%	Deep growl, runs very cool
XING 2306 (C)	1700	~22,000	176 m/s	1,400g	~32A	1.9:1	-26%	-20%	Quietest, most efficient
F80 Pro 2408 (F)	1900	~24,600	197 m/s	1,900g	~40A	2.6:1	-17%	-10%	Big stator + 6" + 5S = best efficiency
JB2407 Bardwell (G)	1750	~22,600	181 m/s	1,700g	~35A	2.3:1	-24%	-17%	N52SH, cool on 6", good thrust

Larger Stator Pick (6" + 5S)

F80 Pro 2408 1900KV — 1,900g on a 6045 at only 40A. A 2306 at the same KV gives 1,700g. That's +200g free thrust from the bigger stator alone.

Best 2306 Option

ECO II 2306 1900KV — 1,700g at 42A. Best 2306 thrust on 6" with comfortable margins.

Best Balance (2306)

RSIII 2306 1800KV — 1,600g at 38A. Comfortable thermal margins for long pulls.

Coolest Runner

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

// 04 BATTERY & BALANCE

Keep the CG

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 your 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	have
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 your 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.

// 05 SOUND COMPARISON

The Trademark Scream

Tip speed determines volume and pitch. The Bulldog blade shape creates the bark. Stay on 5045 to keep the signature.

REF A: 2207 2755KV / 4S / 5045 237 m/s

BASELINE High scream, bogs

REF B: 2306 2555KV / 4S / 5045 219 m/s

BASELINE Holds power

NIN/XING 2750KV / 4S / 5045 236 m/s

= 2207 + 2306 torque

Flash 2550KV / 4S / 5045 219 m/s

= 2306 Identical to old fav

RSIII 2100KV / 5S / 5045 226 m/s

BEST FIT Between both

RSIII 2500KV / 4S / 5045 215 m/s

-9% Close to old 2306

ECO II 1900KV / 5S / 5045 204 m/s

-14% Noticeably softer

ECO II 1900KV / 5S / 6045 197 m/s

-17% Deeper bark

F80 2408 2200KV / 5S / 5045 236 m/s

= 2207 Same scream, won't burn

F80 2408 2500KV / 4S / 5045 226 m/s

+3% vs 2306 +45% thermal mass

Any 1750KV / 4S / 6045 181 m/s

-24% Deep growl

// 06 SERVO UPGRADES

Stop the Blow-Back

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

Emax ES09MD HV

Torque @ 6V2.6 kg/cm

Speed @ 6V0.08s/60°

GearsMetal

Weight14.8g

Dims23x12x24.5mm

Voltage6–8.4V

$9-17 ea. / ~$48-68 ×4

Same footprint as stock (23x12mm). +73% torque. HV version supports up to 2S LiPo direct.

Savox SH-0257MG

Torque @ 6V2.2 kg/cm

Speed @ 6V0.09s/60°

GearsMetal

Weight14.0g

Dims22.8x12x25.4mm

Voltage4.8–6V

$30-40 ea.

Premium brand. Less torque than ES09MD at 3x the price. Overkill unless brand loyalty matters.

MG90D

Torque @ 6.6V2.5 kg/cm

Speed @ 4.8V0.10s/60°

GearsMetal

Weight~13g

Dims22.5x12x31mm

Voltage4.8–6.6V

$5-8 ea.

Budget pick. Good torque but taller — check fit in servo pocket. Slower response.

// 07 COMPLETE BUILDS

What It Costs

Build A: Match the Scream

4S + 5045 // Flash 2306 2550KV

MotorFlash 2306 2550KV~$22

Prop5045 Bulldoghave

BatteryZeee 4S 1500mAhhave

ESCZTW Beatles 60Ahave

ServosES09MD HV ×4~$48-68

Build B: The Sweet Spot

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

MotorRSIII 2306 2100KV~$19

Prop5045 Bulldoghave

Battery5S 1300mAh~$25-30

ESCZTW Beatles 60Ahave

ServosES09MD HV ×4~$48-68

Build C: Bulletproof 5S

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

MotorNIN PLUS 1750KV~$27

Sparesame motor~$27

Battery5S 1300mAh~$25-30

ServosES09MD HV ×4~$48-68

Build D: 6-inch Experiment

5S + 6045 // RSIII 2306 1800KV

MotorRSIII 2306 1800KV~$19

Prop6045 bullnose~$8-12

Battery5S 1300mAh~$25-30

ServosES09MD HV ×4~$48-68

Build E: Budget Beast

4S + 5045 // ECO II 2306 2400KV + spare

MotorECO II 2400KV~$16

Sparesame motor~$16

Prop5045 Bulldoghave

BatteryZeee 4S 1500mAhhave

ServosES09MD HV ×4~$48-68

// 08 KEY TAKEAWAYS

The Bottom Line

To keep the Bulldog bark: stay on 5045. The 6" bullnose is a different sound — deeper growl instead of high-pitched scream. The bark comes from the blade shape at high RPM.

Best overall upgrade: Build B — RSIII 2306 2100KV on 5S + 5045. Sits right between both reference motors in sound, more thrust than the 2207, runs cooler at 42A, and the 5S delivers snappier throttle response.

Cheapest path to better: Build A — Flash 2306 2550KV on your existing 4S. Dead match to the old 2306 sound, 220°C wire so it survives streamer pulls and punch-outs.

Servo upgrade is mandatory at these power levels. Emax ES09MD HV on 6V BEC output — same footprint, 73% more torque. Eliminates dive blow-back.

Wire gauge: Direct solder motor-to-ESC for zero-resistance connections, or crimp proper 3.5mm bullets onto motor leads with heat shrink. Don't stuff 20AWG into oversized connectors.

Motor mount heat shield: Your motor is literally melting into the hard plastic mount. Fix: sandwich a thin aluminum plate (0.5-1mm) between motor and plastic mount — a soda can works, or cut a 16mm-hole circle from thin aluminum sheet. This reflects heat away from the plastic. A 5S + lower KV build also helps by running 3-7A cooler, which reduces motor temp significantly.

// 09 PARTS & BUY LINKS

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	Pyrodrone
iFlight XING 2306	1700 / 2450 / 2750	N52SH, 220°C wire, NSK	~$17-21	RaceDayQuads
Emax RSIII 2306	1800 / 2100 / 2500	N52SH, EZO bearings	~$19	Pyrodrone
Emax ECO II 2306	1700 / 1900 / 2400	N52SH, EZO bearings	~$16	Emax USA
T-Motor F80 Pro 2408	1900 / 2200 / 2500	N52H, EZO, 24x8mm stator (+45%)	~$28	GetFPV • Pyrodrone
Lumenier JB2407 Bardwell	1750 / 2500	N52SH, 24x7mm stator (+27%)	~$25	GetFPV

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
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

Tools

Tool	Use	Price	Buy
Great Planes CG Machine	Center of gravity balancer — sliding rulers, up to 40 lbs	~$30	Amazon
Wood CG Balance Stand	Budget CG balancer with ruler — up to 5kg	~$15	Amazon

Build Comparison Lab

HobbyZone AeroScout S 2 1.1m

Airframe

Current Power System

Performance (Current Setup)

Weight Breakdown (estimated)

Stock Specs (for reference)

Known Issues

Two Baselines, One Sound

XING2 2207 2755KV

XING Pro 2306 2555KV

The Shortlist

FlyFishRC Flash 2306

Flywoo NIN PLUS 2306.5

iFlight XING 2306

Emax RSIII 2306

T-Motor F80 Pro 2408

Lumenier JB2407 Bardwell

Emax ECO II 2306

Every Combination, Measured

Keep the CG

The Trademark Scream

Stop the Blow-Back

Emax ES09MD HV

Savox SH-0257MG

MG90D

What It Costs

The Bottom Line

Everything You Need

Motors (16x16mm mount)

ESCs

ESC Programming Cards

Batteries (short-form packs for CG balance)

Servos

Propellers

Tools