DESIGNED FOR 1/32 SCALE MOTORS
The wait is over! 
Now you can test all your motors against eachother in the confort of your home!
Generator motor puts very little drag on motor being tested so you can be sure of your #1 winner!
Made from Resin & high quality black delrin plastic
All stainless steel hardware
Pre-wired generator motor INCLUDED
Long - Short combo pulley INCLUDED 
 
This unit does not measure rpm but rather voltage generated.
 
Directions for use are as follows,
 
Insert the motor being tested into the right hand motor pod.
Install supplied pulley on motor being tested.
Connect o-ring to pulleys between the motor being tested and the "generator" motor pre-installed in the MSR motor dyno.
Align motor being tested with "generator" motor and tighten the motor set screw on right hand motor pod.
Connect positive and negative leads to motor being tested.
Set voltage on power supply to desired testing voltage. Usually, the voltage of the track you are planning to race on.
The voltage display will show you how much voltage your motor being tested is able to generate by pushing the "generator" motor which also simulates a load on the motor similar to having it installed in a car.
Repeat process with all your motors to find the most powerful!!!