Mechanical speed controllers use a network of resistors and switch between them by rotating a head with an electrode around a plate that has electrical contacts. Mechanical speed controllers are prone to being slow to react, waste energy in the form of heat from the resistors, and can become dirty and perform intermittently.
Electronic speed controllers use solid state components to regulate the power delivered to the electrical motor. Most electronic speed controllers use the electric motor as a magnetic brake, offering better control of the vehicle than is possible with a mechanical speed control.
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 RC Car 300A ESC Speed Controller 1/10/12/18 auto car  US $5.27 »» Ends In 16m «« 
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 2x Marine 50A Speed Controller ESC for RC Racing Boat US $14.62 »» Ends In 16m ««
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 Marine 50A Speed Controller ESC for RC Racing Boat US $7.59 »» Ends In 17m ««
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 HOBBYWING Electric Speed Controller Program Card 932U US $3.50 »» Ends In 26m ««
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 electronize fr30hx speed controller US $54.04 »» Ends In 26m ««
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 Hobbywing Platinum 80A Electric Speed Controller 474U US $59.50 »» Ends In 27m ««
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 Hobbywing Platinum 60A Electric Speed Controller 473U US $46.50 »» Ends In 27m ««
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 HobbyWing Pentium 10A Electronic Speed Controller 245U US $6.50 »» Ends In 27m ««
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 3 Racing Graphite Receiver Bracket For NT1 US $12.80 »» Ends In 30m ««
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 35MHz FT06-A Transmitter 6Channels,For Helicop,Aircraft US $100.00 »» Ends In 56m ««
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 Double Horse RC Helicopter 9081-14 Receiver US $19.00 »» Ends In 57m ««
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 CORONA 6 CHANNEL DUAL CONVERSION RECEIVER AUTO SHIFT US $33.90 »» Ends In 58m ««
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 CASTLE CREATIONS PHOENIX ICE 80HV 80 HV ESC CONTROLLER US $139.99 »» Ends In 1h 7m «« |
 Receiver for Double Horse RC Helicopter 9077-23 US $15.00 »» Ends In 1h 9m ««
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 RX2605A receiver (for Walkera 4G3 double brushless) US $15.42 »» Ends In 1h 19m «« |
 ESKY LAMA HELICOPTER 4-IN-1 CONTROLLER EK2-0705B 35MHz US $38.43 »» Ends In 1h 23m ««
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 Acoms Techniplus 2chanel Radio control transmitter unit US $20.66 »» Ends In 1h 25m «« |
 NE4603001 Receiver Set Nine Eagles 210A Solo Helicopter US $20.29 »» Ends In 1h 33m ««
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 NE4603001 Receiver Set Nine Eagles part Solo Helicopter US $38.39 »» Ends In 1h 35m ««
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 Marine 50A Speed Controller ESC for RC Boat waterproof US $25.45 »» Ends In 1h 36m ««
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 RC Car 300A ESC Speed Controller High Powerful Neu US $17.67 »» Ends In 1h 36m ««
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 2x Marine 50A Speed Controller ESC for RC Boat NEW ! US $49.70 »» Ends In 1h 36m ««
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 Futaba R147F 35mhz 7ch Receiver US $6.48 »» Ends In 1h 58m «« |
 80A Speed Controller for electric R/C car RC control US $59.99 »» Ends In 2h ««
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 Spektrum SR300 3Ch Receiver 2.4GHz with bind plug "NEW" US $63.99 »» Ends In 2h 10m ««
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 SPEKTRUM SR3500 MICRO RECEIVER DSM 2.4GHZ SPM1210 new US $105.74 »» Ends In 2h 11m ««
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 02071 - Receiver US $13.88 »» Ends In 2h 16m ««
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 Transmitter Stand / Futaba JR Spektrum Hitec V2 BLUE US $15.42 »» Ends In 2h 16m ««
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 SKYLEADER RADIO CONTROL RECEIVER SWITCH US $1.53 »» Ends In 2h 17m «« |
 Futaba R 116fb 6chl receiver 35 mhz US $11.89 »» Ends In 2h 23m «« |
 JR 2.4GHz Transmitter Module 347 388 783 U8 PCM10 8103 US $44.98 »» Ends In 2h 30m ««
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 FUTABA DUAL CONVERSION PCM 1024 R149DP RECEIVER 72MHZ 9 US $124.99 »» Ends In 2h 39m ««
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 Futaba FM R136F 6 Channel Receiver 72MHZ JR Hitec Sanwa US $54.99 »» Ends In 2h 39m ««
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 Futaba TX Module FP-PK-FM RF. Transmitter 75MHZ 3PK 3PJ US $49.90 »» Ends In 2h 40m ««
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 SPEKTRUM AR6200 RECEIVER SPMAR6200 DX6i DX7 NO BOX US $69.46 »» Ends In 2h 42m ««
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 Tyco Electric Race Car Track Set Controllers Power Pack US $7.50 »» Ends In 2h 59m «« |
 Aquacraft RC Boat Radio w/AM 2-Channel Receiver US $13.00 »» Ends In 3h «« |
 Align 6 channels 6ch FM receiver RC-RX6 35/72MHz trex US $1.99 »» Ends In 3h 11m ««
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 DYNAMITE DYN1448 RECEIVER FLAT PACK 6.0 VOLT 1400 mah US $24.87 »» Ends In 3h 15m ««
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 RC Transmitter Neck Strap (BLACK Nylon Adjustable) US $9.95 »» Ends In 3h 17m ««
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 Futaba R5014DPS 14Ch Receiver 14MZ 12Z US $99.95 »» Ends In 3h 26m «« |
 Spektrum DX6i Transmitter Only Mode 2 SPMR6600 US $149.99 »» Ends In 3h 36m ««
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 Kyosho KT14 27mhz AM/PPM LCD Transmitter Receiver Set US $30.88 »» Ends In 3h 38m «« |
 New Kyosho Perfex Transmitter & Receiver 27mhz Crystals US $1.53 »» Ends In 3h 38m «« |
 35A ESC Speed Controller for ALIGN TREX T-rex 450 V2 V3 US $5.50 »» Ends In 3h 53m «« |
 FM Transmitter & Remote Control for IPhone & iPod C1 US $.10 »» Ends In 4h 1m «« |
 Sunupp FM 40 MHZ 6 Channel Radio RC Receiver Futaba/JR US $10.96 »» Ends In 4h 6m ««
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 Walkera 1#A Parts HM-1A-WS-Z-07 Blade Controller Set US $8.37 »» Ends In 4h 6m ««
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 Sunupp FM 35 MHZ 6 Channel Radio RC Receiver 800Meter US $10.96 »» Ends In 4h 7m ««
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 JR Propo X-378 Transmitter US $92.63 »» Ends In 4h 13m «« |
 FUTABA TRANSMITTER crystal 27.145 Mhz YELLOW US $6.95 »» Ends In 4h 13m ««
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 Hitec Electron 6 6 channel FM Receiver JR HRC25372 US $29.99 »» Ends In 4h 14m ««
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 FUTABA TRANSMITTER crystal 27.255 Mhz BLUE US $6.95 »» Ends In 4h 16m ««
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 6CH 35Mhz Transmitter & Receiver RC Helicopter airplane US $9.12 »» Ends In 4h 16m «« |
 DYR-1009 RSP-D 36 MHZ 4 CHANNEL FM RECEIVER US $13.44 »» Ends In 4h 17m ««
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 Futaba R149DP PCM 72MHz receiver(Li/Hi band) US $116.00 »» Ends In 4h 19m ««
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 FUTABA TRANSMITTER crystal 27.045 Mhz RED US $6.95 »» Ends In 4h 20m ««
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 New MINI Brushless Receiver 4CH For rc MODEL US $.99 »» Ends In 4h 24m «« |
 KYOSHO KT-8 T535 PERFEX TRANSMITTER 35.01 MHz US $5.51 »» Ends In 4h 24m «« |
 JR Sport Micro Airpac 2 servos and Receiver JSP40015 US $39.99 »» Ends In 4h 25m ««
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