Timpdon Electronics Manufacturers of High Quality Electronic Equipment for Model Railway and Marine Modellers Product Catalogue Timpdon Electronics 2, Curzon Drive Timperley Altrincham Cheshire WA15 7SY United Kingdom Tel: +44(0) 161 980 7804 EMail: www: electronics@timpdon.co.uk www.timpdon.co.uk Issue 26 March 2018 Page 1 of 24
Index Page UltraRad Radio Control System 3 GigaRad Radio Control System 9 GigaRad Radio Points System 13 Standard Radio Control Products 15 Timpdon Marine 16 Manual Motor Speed Controllers 20 Servo Controllers 22 Accessories and Spares 24 For more information on our complete product range, and to view video clips of many of our products in operation, visit the Timpdon Electronics web site at www.timpdon.co.uk We make a standard delivery charge on all orders shipped to addresses within the United Kingdom. 2.00 for orders under 25.00 2.50 for orders between 25.00 and 45.00 3.50 for orders of 45.00 and above Please contact us for delivery charges to other countries. Timpdon Electronics has a continuing program of product development and improvement. We reserve the right to make improvements to the hardware specification and microcontroller software control programs of all products, without notice. All Timpdon Electronics microprocessor controlled products can be factory upgraded to the latest software issue. Contact Timpdon Electronics for details and prices of available upgrades. Issue 26 March 2018 Page 2 of 24
UltraRad Radio Control A custom radio control system designed for model railways. 433 MHz UHF Band. Frequency Modulation. Coded binary serial data transmission with data validation and transmitter ID incorporated. Multiple transmitters can run at the same time in close proximity without interference. One transmitter for all your models. Any controller can be locked to any transmitter. Fully UK Legal for licence free operation. Notes For a fully operational UltraRad radio control system, you will need an UltraRad radio transmitter, an UltraRad radio receiver and an UltraRad controller to suit the vehicle to be controlled. UltraRad controllers can not be used on standard radio control systems, or with Timpdon Electronics GigaRad equipment. Use of the UltraRad system may not be legal in some countries outside the UK, and orders for UltraRad equipment will not be accepted for delivery to addresses outside the UK. UltraRad Radio Transmitter Model UTX1 For Battery Electric Locos. 30 metre range. One handed operation. Runs on 2 x AA batteries with 100 hour+ life. Analogue variable speed control channel. Digital Forward/Stop/Reverse control channel. Two digital auxiliary channels for control of horn and lights. 111mm x 66mm x 50mm. 58.00 UltraRad Radio Transmitter Model UTX2 For both Live Steam and Battery Electric Locos. 30 metre range. One handed operation. Runs on 2 x AA batteries with 100 hour+ life. Analogue variable speed control channel. Analogue Forward/Stop/Reverse control channel, with reverser servo trim controls. Two digital auxiliary channels for control of steam whistle and lights. Additional servo calibration and remote transmitter lock functions. 111mm x 66mm x 50mm. 69.00 Issue 26 March 2018 Page 3 of 24
UltraRad Radio Control UltraRad Radio Transmitter Model UTX3 Multi-Channel Transmitter for both Live Steam and Battery Electric Locos. Channel selector switch to permit user selectable control of up to ten different vehicles from one transmitter. Specification otherwise identical to UTX2. 113mm x 66mm x 50mm. 92.00 UltraRad Radio Transmitter Model UTX5 For Accucraft Live Steam Locos. 30 metre range. One handed operation. Runs on 2 x AA batteries with 100 hour+ life. Analogue variable speed control channel. Analogue reverser control channel, with full reverser servo control. Two digital auxiliary channels for control of steam whistle and lights. Additional servo calibration and remote transmitter lock functions. 111mm x 66mm x 50mm. 68.00 UltraRad Radio Repeater Model UTR1 Automatic radio repeater Extend the range of your UltraRad system or fill in radio coverage to awkward shielded pockets of your garden railway Can be use with both UltraRad Loco and Point Control systems 111mm x 66mm x 50mm. 68.00 Issue 26 March 2018 Page 4 of 24
UltraRad Radio Control UltraRad Radio Receiver Model URX1 Universal UltraRad radio receiver. Can be used with any UltraRad transmitter and controller. Powered from UltraRad controller. 60mm x 16mm x 10mm. 26.00 UltraRad Controller For Battery Electric Vehicles Model URC1 4.8 to 12V d.c. PWM Speed controller. 2.5A continuous motor current. Bi-directional, with built-in reverser. 55mm x 28mm x 15mm. 35.00 UltraRad Controller Model URC2 For Battery Electric Vehicles with Lights / Horn 4.8 to 12V d.c. PWM Speed controller. 2.5A continuous motor current. Bi-directional, with built-in reverser. Two additional 1A digital switch outputs for control of lights and horn. 55mm x 37mm x 16mm. UltraRad Controller 40.00 Model URC3 For Live Steam Locos with Separate Servos for Regulator and Reverser 4.8 to 6V d.c. Three Servo Outputs o Regulator o Reverser o Steam Whistle Additional 1A digital switch output for control of lights. User calibration of all servo settings, retained on power off. 32mm x 27mm x 13mm. 28.00 Issue 26 March 2018 Page 5 of 24
UltraRad Radio Control UltraRad Controller Model URC4 For Live Steam Locos with Single Combined Servo for Regulator / Reverser 4.8 to 6V d.c. Two Servo Outputs o Regulator / Reverser o Steam Whistle Additional 1A digital switch output for control of lights. User calibration of all servo settings, retained on power off. 32mm x 27mm x 13mm. 28.00 UltraRad Controller Model URC5 For Battery Electric Vehicles fitted with a separate third party Electronic Speed Control Requires ESC fitted with 5V BEC Standard servo output to ESC Power derived from ESC BEC Direction forward/reverse lighting outputs 1A switch for horn 32mm x 20mm x 12mm. 21.00 UltraRad Servo Controller Model URC7 Controlled motion between two end points. Uses Standard RC Servo Control Points, signals, barriers and crossing gates from your UltraRad transmitter. User settable for Aux1 or Aux2 transmitter outputs. Incorporates optional end of travel bounce. Fully user programmable for servo end points, rotation rate and end of travel bounce levels. Optionally supplied with Acoms AS17 servo-motor. Screw terminals for power connections, and plug connection for servo and UltraRad receiver. 50mm x 21mm x 14mm. 4.8 to 6V d.c. Without Servo 26.00 Issue 26 March 2018 Page 6 of 24
UltraRad Radio Control UltraRad Controller Model URC8 For Accucraft Live Steam Locos with Separate Servos for Regulator and Reverser Full reverser servo control when used with UTX5 4.8 to 6V d.c. Three Servo Outputs o Regulator o Reverser o Steam Whistle Additional 1A digital switch output for control of lights. User calibration of all servo settings, retained on power off. 32mm x 27mm x 13mm. UltraRad Controller 28.00 Model URC9 For Battery Electric Vehicles with Automatic Directional Lights 4.8 to 12V d.c. PWM Speed controller. 2.5A continuous motor current. Bi-directional, with built-in reverser. Two 5V, 25mA outputs for automatic directional LED lights, controlled by reverser setting. 55mm x 37mm x 16mm. 40.00 UltraRad Controller Model URC10 For Tolhurst Live Steam Locos with Three Dual Action Servos Controlling Trumpet Valves 4.8 to 6V d.c. Three Servo Outputs o Regulator / Blower o Reverser o Steam Whistle / Draincocks User calibration of all servo settings, retained on power off. 35mm x 35mm x 14mm. 28.00 Issue 26 March 2018 Page 7 of 24
UltraRad Radio Control UltraRad Controller Model URC11 For Higher Voltage Battery Electric Vehicles - G Scale and Gauge 1 7 to 24V d.c in two models: o URC11L 7 V to 15 V d.c. o URC11H 12 V to 24 V d.c. PWM Speed controller. 2.5A continuous motor current. Bi-directional, with built-in reverser. Four solid state 1 A switches: o Two for automatic directional lights, controlled by reverser o Two for auxiliary functions, controlled by AUX1 and AUX2 transmitter switches 70mm x 36mm x 16mm. 46.50 UltraRad Receiver/Controller Model URC12 Combined Receiver and Controller for Battery Electric Vehicles Small footprint, for fitting into tight spaces. PWM Speed controller. 2.5A continuous motor current. Bi-directional, with built-in reverser. Full and Shunt speed ranges. Additional LED lighting output. 52mm x 42mm x 15mm. 64.00 Issue 26 March 2018 Page 8 of 24
GigaRad Radio Control A custom radio control system designed for model railways. 2.4 GHz Radio Control Model Band. Long Range and Fast Response. Coded binary data transmission with data validation and transmitter ID incorporated. Multiple transmitters can run at the same time in close proximity without interference. One transmitter for all your models. Any controller can be locked to any transmitter. Fully UK Legal for licence free operation. Notes For a fully operational GigaRad radio control system, you will need a GigaRad radio transmitter, a GigaRad radio receiver/controller to suit the vehicle being controlled and, for battery electric vehicles, an external electronic speed controller. GigaRad controllers can not be used on standard radio control systems, nor with Timpdon Electronics UltraRad equipment. Please note also, that GigaRad Radio Control System and GigaRad Points Control System components are not inter-operable. Use of the GigaRad system may not be legal in some countries outside the UK, and orders for GigaRad equipment will not be accepted for delivery to addresses outside the UK. GigaRad Radio Transmitter Model GTX1 For both Battery Electric and Live Steam Locos. 100 metre range. One handed operation. Runs on 2 x AA batteries with 100 hour+ life. Analogue variable speed control. Forward/Stop/Reverse control switch. Four digital auxiliary switches for control of horn, sound cards and lights. 111mm x 66mm x 50mm. 64.00 GigaRad Radio Transmitter Model GTX2 Three Channel Transmitter for Battery Electric Locos. 100 metre range. One handed operation. Runs on 2 x AA batteries with 100 hour+ life. 3 Channel selector switch - control 3 locos at once. Analogue variable speed/direction control with centre stop detent. Four digital auxiliary switches for control of horn, sound cards and lights. 111mm x 66mm x 50mm. 69.00 Issue 26 March 2018 Page 9 of 24
GigaRad Radio Control GigaRad Receiver/Controller Model GRX1 For Battery Electric Vehicles Can be used with any GigaRad transmitter. Requires external electronic speed controller with BEC. Powered from external ESC. Serial Data Output to Optional Auxiliary Controller 47mm [ over pins ] x 35mm x 11mm. 26.00 GigaRad Receiver/Controller Model GRX2 For Live Steam Vehicles, equipped with separate servos for Regulator and Reverser Can be used with any GigaRad GTX1 transmitter. Three servo outputs for Regulator, Reverser and Steam Whistle. Incorporates servo calibration facilities. Serial Data Output to Optional Auxiliary Controller. 47mm [ over pins ] x 35mm x 11mm. 27.00 GigaRad Receiver/Controller Model GRX3 For Live Steam Vehicles, equipped with a single servo for both Regulator and Reverser Can be used with any GigaRad GTX1 transmitter. Two servo outputs for Regulator/Reverser and Steam Whistle. Incorporates servo calibration facilities. Serial Data Output to Optional Auxiliary Controller. 47mm [ over pins ] x 35mm x 11mm. 27.00 Issue 26 March 2018 Page 10 of 24
GigaRad Radio Control GigaRad Radio Point Controller Model GRX4 Radio Point Controller with integral receiver. Switch controlled rotation between Set and Reset positions. Can be used with any GigaRad transmitter. Uses standard RC Servo as point machine Switch operated by any of four transmitter switches. Maximum servo rotation angle approximately 25 degrees. User programmable for point Set and Reset positions, and operating switch selection. Realistic controlled rotation rate. 47mm [ over pins ] x 35mm x 11mm. Without Servo 26.50 GigaRad Radio Servo Controller Model GRX5 Radio Servo Controller with integral receiver. Switch controlled rotation between two fixed servo positions. Ideal for the control of crossing gates, barriers and semaphore signals. Can be used with any GigaRad transmitter. Uses standard RC Servo. Switch operated by any of four transmitter Auxiliary switches. Maximum servo rotation angle approximately 120 degrees. Rotation period between 2.5 s and 20 s for 90 degree servo rotation. User programmable for servo set and reset positions, rotation period, and operating switch selection. 47mm [ over pins ] x 35mm x 11mm. Without Servo 26.50 Issue 26 March 2018 Page 11 of 24
GigaRad Radio Control GigaRad High Frequency Speed Controller For Battery Electric Vehicles up to 24V Model GSC4 20 khz bi-directional PWM speed controller. Suitable for coreless motors. Eliminates motor whine. 7 to 24 V d.c. - 2 A continuous motor current. Incorporates 5V BEC for receiver and auxiliary supplies. Built in reversing relay. Full user calibration for transmitter settings. Three selectable output characteristics - Standard and two shunt characteristics for better low speed control. 45mm x 25mm x 12mm. 33.00 Standard Speed Controller Model V10 For Battery Electric Vehicles Mtroniks Micro Viper 10A ESC. Not suitable for coreless motors. 26mm x 26mm x 12mm.. 22.50 GigaRad Auxiliary Controller Model GAC1 For Battery Electric and Live Steam Vehicles 5 digital switch outputs rated at 24 V, 100 ma each. Two outputs for automatic forward/reverse lighting, controlled by Reverser. Three outputs controlled by Transmitter Auxiliary switches. Input and power derived from serial data output of receiver/controller. 36mm [ over pins ] x 17mm x 12mm. 21.00 Issue 26 March 2018 Page 12 of 24
GigaRad Points Control A custom radio Point and Signal control system designed for model railways. 2.4 GHz Radio Control Model Band. Long Range and Fast Response. Coded binary data transmission with data validation and transmitter ID incorporated. Multiple transmitters can run at the same time in close proximity without interference. One transmitter for all your points. Any point can be locked to any transmitter. Fully UK Legal for licence free operation. Notes For a fully operational GigaRad point control system, you will need a GigaRad Point transmitter, and a GigaRad point controller [and servo] for each point or semaphore signal to be controlled. Please note that GigaRad Radio Control System and GigaRad Points Control System components are not inter-operable. Use of the GigaRad system may not be legal in some countries outside the UK, and orders for GigaRad equipment will not be accepted for delivery to addresses outside the UK. GigaRad Points Transmitter Model GPTX10 100 metre range. Up to 12 individual sets of points. Up to 12 user settable routes. Full calibration of all point settings. Runs off 2 x AA batteries [50 hour+ life]. 170 mm x 85 mm x 48 mm. 85.00 GigaRad Point Controller Model GPRX6 Uses standard RC servo as point motor Internal aerial. 4.8 V to 6V supply [4 x AA cells]. Standard RC PWM output to servo. Fully programmable for point number, servo end positions and rotation angles, from transmitter. 47mm [over pins] x 35mm x 11mm. Without Servo 26.50 GigaRad Point Controller Model GPRX7 Uses standard RC servo as point motor Identical to GPRX6, but with two additional switched outputs to indicate set and reset positions External auxiliary outputs can be used to drive LEDs, or to control external semaphore signals, using ServoSwitches Model SCS1. 4.8 V to 6V supply [4 x AA cells]. Fully programmable for point number, servo end positions and rotation angles, from transmitter. 47mm [over pins] x 35mm x 11mm. Without Servo 27.00 Issue 26 March 2018 Page 13 of 24
GigaRad Points Control GigaRad Signal Controller Model GPRX8 Uses standard RC servo as point motor Identical to GPRX6, but with extended servo rotation range [120 ] to accommodate semaphore signal arms. 4.8 V to 6V supply [4 x AA cells]. Standard RC PWM output to servo. Fully programmable for point number, servo end positions and rotation angles, from transmitter. 47mm [over pins] x 35mm x 11mm. Without Servo 26.50 Issue 26 March 2018 Page 14 of 24
Standard Radio Control Products All Timpdon Electronics standard radio control products: Incorporate advanced microprocessor control. Plug directly into your standard RC receiver. Have screw terminals for power and load connections. Incorporate advanced RC noise and glitch rejection features. High Frequency Speed Controller Model GSC4 For Battery Electric Vehicles up to 24V 20 khz bi-directional PWM speed controller. Suitable for coreless motors. Eliminates motor whine. 7 to 24 V d.c. - 2 A continuous motor current. Incorporates 5V BEC for receiver and auxiliary supplies. Built in reversing relay. Full user calibration for transmitter settings. Three user selectable output characteristics - Standard and two shunt characteristics for better low speed control. 45mm x 25mm x 12mm. 33.00 RadioSwitch Digital On-Off Switch Model RSW11 Single pole on / off switch. Control power derived from RC receiver. 1A continuous load current, at up to 24 V d.c. supply voltage Two operating modes - latched and momentary. Retains last output state if RC transmitter turned off. 35mm x 14mm x 14mm. 18.50 RadioSwitch Digital On-Off-On Switch Model RSW12 Single pole changeover switch with centre off. 4.8 to 12V d.c. 1A continuous load current. Two operating modes - latched and momentary Retains last output state if RC transmitter turned off. 39mm x 22mm x 14mm. 21.50 Issue 26 March 2018 Page 15 of 24
Timpdon Marine A range of Radio Control Accessories primarily for the Model Boat Enthusiast, but with application for railway modellers too. Servo Scaler Calibrate your servo independently of transmitter settings Model MSSC1 For transmitter channels without centre neutral joystick. Two user programmable servo end positions, corresponding to RC transmitter joystick minimum and maximum, with proportional linear control between. Mounted inline between RC receiver and servo powered from receiver. 45mm x 18mm x 12mm. Without Servo 24.00 Servo Scaler Calibrate your servo independently of transmitter settings Model MSSC2 For transmitter channels with centre neutral joystick. Three user programmable servo end positions, corresponding to RC transmitter joystick minimum, neutral and maximum, with proportional linear control between. Mounted inline between RC receiver and servo powered from receiver. 45mm x 18mm x 12mm. Without Servo 24.00 Radio ServoSwitch Model MRSS1 Controlled rotation between two end positions For any analogue or digital transmitter channel. User programmable for maximum and minimum servo positions and rotation rate. Mounted inline between RC receiver and servo powered from receiver. 45mm x 18mm x 12mm. Without Servo 24.00 Issue 26 March 2018 Page 16 of 24
Timpdon Marine Radio ServoSwitch Model MRSS2 Controlled rotation between two end positions For transmitter channels with centre neutral joystick. Up Stop Down control of servo. User programmable for maximum and minimum servo positions and rotation rate. Mounted inline between RC receiver and servo powered from receiver. 50mm x 18mm x 13mm. Without Servo 24.00 Radio ServoSwitch Model MRSS3 Controlled rotation between two end positions For slow slew digital transmitter channels e.g. Planet T5, Channel 5. Instantaneous response. User programmable for maximum and minimum servo positions and rotation rate. Mounted inline between RC receiver and servo powered from receiver. 50mm x 18mm x 13mm. Without Servo 24.00 Radio ServoSwitch Model MRSS4 Controlled rotation between two end positions, With limit switch For any analogue or digital transmitter channel. User programmable for maximum and minimum servo positions and rotation rate. Limit switch input to stop rotation before end position in either direction. Mounted inline between RC receiver and servo powered from receiver. 50mm x 18mm x 13mm. Without Servo 25.00 Issue 26 March 2018 Page 17 of 24
Timpdon Marine Radio MultiSwitch Model MRMS1 Control up to four digital output switches from one RC channel Individual On / Off switch selection by joystick pulsing. Latched outputs. Requires analogue RC channel with spring loaded centre off joystick. Output switches rated at 24 V, 2 A. Powered from RC receiver. 40mm x 25mm x 15mm. Radio MultiSwitch 25.00 Model MRMS2 Control up to four digital output switches from one RC channel Individual On / Off switch selection by joystick pulsing. Momentary outputs. Requires analogue RC channel with spring loaded centre off joystick. Output switches rated at 24 V, 2 A. Powered from RC receiver. 40mm x 25mm x 15mm. 25.00 Radio MultiSwitch Model MRMS3 Control up to four digital output switches from one RC channel Sequential cumulative switch selection on successive joystick operations. Requires analogue RC channel with spring loaded centre off joystick. Output switches rated at 24 V, 2 A. Powered from RC receiver. 40mm x 25mm x 15mm. 25.00 Issue 26 March 2018 Page 18 of 24
Timpdon Marine Radio MultiSwitch Model MRMS4 Control up to four digital output switches from one RC channel Sequential single switch selection on successive joystick operations. Requires analogue RC channel with spring loaded centre off joystick. Output switches rated at 24 V, 2 A. Powered from RC receiver. 40mm x 25mm x 15mm. 25.00 Timpdon Electronics also offers an economical bespoke design service for Radio MultiSwitches - specify your own switching combinations. Contact us for details, or see Technical Note 15, available from the Downloads section of our website. Issue 26 March 2018 Page 19 of 24
Manual Motor Speed Controllers AutoShuttle Automatic Shuttle Train Controller Model SH3 Bi-directional, fully automatic PWM motor speed controller. Advanced microprocessor controlled circuit. Two termini and any number of intermediate stops, in either direction. Independently user programmable for speeds, acceleration / deceleration rates and stop times. Settings retained on power off. Uses only two vehicle mounted reed switches with associated trackside magnets. 4.8 to 12V d.c. 2.5A continuous motor current. Supplied with programming unit, two fully wired reed switches and four magnets, for termini. Additional magnets available for intermediate halts. 70mm x 29mm x 16mm. 46.50 AutoShuttle Automatic Shuttle Train Controller Model SH4 Identical Specification to AutoShuttle, Model SH3 Plus Two automatic directional Forward / Reverse lighting outputs controlled by reverser. 70mm x 29mm x 16mm. 51.00 Issue 26 March 2018 Page 20 of 24
Manual Motor Speed Controllers Manual Speed Controller PWM Motor Speed Controller Model SC1 Advanced microprocessor controlled circuit. 2.5 to 12V d.c. 1A continuous motor current. Ideal for the smaller loco, such as IP Engineering or Fendyke. Requires external reverser. Supplied with speed adjusting potentiometer. 32mm x 17mm x 12mm 18.00 Manual Speed Controller PWM Motor Speed Controller Model SC2 Advanced microprocessor controlled circuit. 6 to 12V d.c. 2.5A continuous motor current Ideal for larger locos, such as Essel, Roundhouse or Brandbright. Requires external reverser. Supplied with speed adjusting potentiometer. 50mm x 20mm x 9mm. 23.00 Issue 26 March 2018 Page 21 of 24
Servo Controllers ServoSwitch Model SCS1 Switch Controlled Servo Uses Standard RC Servo 4.8 to 6V d.c. Servo operation from single On/Off switch. Now incorporates optional end of travel bounce. Fully user programmable for servo end points, rotation rate and bounce levels. Screw terminals for power and data connections, and plug connection for servo. 52mm x 20mm x 16mm. Without Servo 25.00 ServoSwitch Model SCS2 Switch Controlled Servo with Sense Output Uses Standard RC Servo 4.8 to 6V d.c. Servo operation from single On/Off switch. Optional end of travel bounce. Sense output at end of throw in both directions permits daisy chaining of units for sequential operation. Fully user programmable for servo end points, rotation rate and bounce levels. Screw terminals for power and data connections, and plug connection for servo. 52mm x 23mm x 16mm. Without Servo 26.00 Issue 26 March 2018 Page 22 of 24
Servo Controllers ServoSwitch Model SCS3 Three Way Switch Controlled Servo Uses Standard RC Servo 4.8 to 6V d.c. Three position servo operation from single On/Off/On switch. Ideal for three way point control. Fully user programmable for servo centre and end points, and rotation rate. Screw terminals for power and data connections, and plug connection for servo. 52mm x 20mm x 16mm. Without Servo 26.00 ServoSwitch Model SCS4 Toggled Pulsed Switch Controlled Servo Uses Standard RC Servo 4.8 to 6V d.c. Servo rotates to opposite sense each time normally open switch is pulsed closed. Ideal for automatic signal control by passing train using track mounted reed switch and vehicle mounted magnet. Optional end of travel bounce. Fully user programmable for servo end points, rotation rate, bounce levels and post trigger delay. Screw terminals for power and data connections, and plug connection for servo. 52mm x 20mm x 16mm. Without Servo 25.00 Issue 26 March 2018 Page 23 of 24
Accessories and Spares Reed Switches Model SH3-R2 Replacement Reed Switches for AutoShuttles SH3 and SH4 Set of two reed switches. Fully wired and encapsulated. 22mm x 4mm x 3mm plus 150mm leads. 4.50 Trackside Magnets Model SH3-M3 Additional Station Stops for AutoShuttles SH3 and SH4 Set of three bar magnets. One complete set will be required for each intermediate halt. 19.1mm x 4mm dia. 4.00 Track Operations Kit Additional Trackside for AutoShuttle SH3 Model SH3-M3 Set of one bar magnet and one wired reed switch. Automatic vehicle operation kit for ServoSwitch SCS4. Allows SCS4 to be converted to fully automatic operation by passing vehicle. 3.50 RC Servo Miniature Standard RC Servo Servo Small Standard RC Servo Hobby King HK 14158B, or similar Ideal for operating points and semaphore signal arms 28 mm x 13 mm x 30 mm Supplied with fixing hardware and servo horns 6.00 Issue 26 March 2018 Page 24 of 24