Aim MyChron RPM Sensor / Cable & Clip Kart

The Aim MyChron RPM Sensor Cable & Clip is a vital part of a karting setup. It is specifically designed for karting and is an essential addition for picking up your RPM with ease. It is also easily installed, so you can focus on your results purely.

Please Note: While running the cable and the kart chassis, place the RPM cable as far as possible from the thermocouple cable. Use plastic wrappers to firmly fix RPM connections to the chassis to avoid movements or damages.

To diminish the signal intensity and relative noises, we suggest connecting the clip without winding the RPM cable up to the spark plug. If the signal is not correctly read, wind the cable more times upon the spark plug cable.

The Aim MyChron RPM Sensor Cable & Clip works as a high-frequency inductive pickup device, and non-invasively detects the engines ignition cycle to then convert it into a measurable signal for the MyChron Lap Timer. RPM measuring starts with the inductive coupling, where a specialised clip attaches to the engine’s spark plug wire - this clip contains the sensor coil. Each time the ignition coil sends high-voltage pulses down the spark plug wire to create a spark, then a strong electromagnetic field forms around the wire.

The sensor coil is coupled with the plug wire and immediately picks the electromagnetic field fluctuation. This change causes a measurable voltage pulse in the sensor coil, proportional to the strength and speed of the field fluctuation. These pulses are carried by the cable from the clip up to the input port of the MyChron. The MyChron then counts these pulses over a set time window and, based on the engine settings, the data logger determines the relationship between pulse number and the engine’s physical rotation. RPM is then calculated and displayed on the MyChron and recorded.