ElectroDynamics Inc
Electronics and MORE for the Discerning Modeler!
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About Us

    EDR-103 Glow Drivers
      Single Cylinders & Twins
    EDR-105 Battery Monitor
    EDR-106 Pro Servo Reverser
EDR-107ADP Kill Switch
    EDR-108 Pow'R Back'R
    EDR-111 Pow'r Bus Pro
    EDR-117 LiteSys
    EDR-122+ Servo-Slo Plus
    EDR-124 BatMon Lite
    EDR-125 Gear Mg'R
    EDR-126 Gear Saver
    EDR-201 Current Probe
    EDR-203 ServoCiser
    EDR-206 Turbine Driver
    EDR-207L NanoTest
      Buffer-Amplifier Interface

    EDR-102 One-Clik
    EDR-103P Glowlite II
    EDR-107ADP Kill Switch
    SANYO eneloop Packs
    EDR-207L NanoTest
      A123 Tester

Ultra Switch II

    ED-Nano A123 Packs
    SANYO eneloop Packs
    Receiver Packs
    Transmitter Packs


    Switch Harnesses
    Amplifying Buffers
    Charge Cords

Festo Fittings


Heat Shrink Tubing

Ultra Precision Valves

Web Specials

Tech Talk

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EDR-203 Servo Ciser

STILL installing servos the FRUSTRATING, OLD way??

"WOW... No more putting the plane together and wondering where the center is
or if the servo even works. I wish I had this years ago.
-- Dave Teich"

You NEED this tool!

  • Simple 3 button operation. Find your servos' electrical center with computer accuracy!

  • Breeze thru installations without Tx or Rx - stop "hangar rash" on your radio!

  • Super-convenience when working in tight spaces!

But it's MORE than a SUPER Servo Driver!

  • Test Pots, gears and motors... Weed out bad servos BEFORE they cause problems!

Need more info? 
Click here to download the EDR-203 Instruction Manual

    Now with

  • 99.995% ROCK-STEADY stability
  • better than "PCM 2048" precision!

EDR-203 ServoCiser

Customer Comments

"WOW, your servo tester arrived and I immediately grabbed a half dozen servos and started testing. I have been making models since 1959 and this is the greatest piece of equipment I have ever used. No more putting the plane together and wondering where the center is or if the servo even works. I wish I had this years ago. Thanks for all your efforts. Dave Teich"  2/23/2008
-- Thank you, Dave!

" I already own two servo cyclers so I was a bit skeptical of what this one could do, but after examining it for a while, I can highly recommend getting one..."

"Great product! Love using it for setting up my airplanes, and it saves a lot of time!"

"I have one of these excellent bits of kit and love it."

"I have had one of your EDR 203 Servocisers for a number of years and its been great."

2017 ElectroDynamics, Inc
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Orders: 1-800-337-1638; Info: (734) 422-5420; Fax: (734) 422-5338
31091 Schoolcraft Road; GAZ Commercial Center; Livonia, MI 48150