Page 8 - DYNO TTRAINER

Remote Control Car Dynamometer

There is a wide variety of tutorials on the Internet on how to build a personal dyno

for remote control cars, as a dyno for remote control car is relatively small, suitable and

manageable to be done by one even with only amateur knowledge related to the field.
Basically, to transfer the reading of the moving rollers to electronic components, a Rotation

Per Minute (RPM) sensor is needed. Most of the tutorials online focus more on utilizing
cost-saving materials rather than precision, therefore it could be observed that most propose

using a small magnet, removed from daily items like earphones, fixed to a rotating item
which functions as a dyno roller to sense the rotation by the roller. This creates a signal that

can be input to the computer via the microphone plug, and then graphically plotted by dyno

software. But since they are mostly Do-It-Yourself projects, so a lot of safety and technical
regulations are not accurately adhered. There are two distinct categories of dynamometer

which has the same function, this being chassis-to-motor testing and motor-to-motor testing,
however designing a chassis-to-motor dynamometer is more desirable than a motor-to-

motor type. Chassis-to-motor dynamometers are more desirable as they allow remote
control engines to be tuned in real time, under constant loading conditions and also at a

variety of engines speeds. Being able to tune without needing to remove or dismantle any

car parts is an extra advantage as the change in engine output characteristics due to a change
in engine settings can be seen instantaneously allowing for a more accurate tuning process.