The Spaakmachine is a machine that helps to interactively straighten bicycle rims. The client's problem was that it took too many man-hours to straighten rims by hand.
This system helps to straighten a rim in a more efficient way. The device can directly be attached to the frame, saving time on disassembling the bike. Two sensors are used to measure the rim: a linear sensor to measure the axial deviation, and an encoder wheel to measure the rotational position of the wheel.
It's all very easy to use: just mount the sensor module to the frame, calibrate the system, and give it a spin. The display shows a graph of the measurement, and points the worker where they should adjust the rim. After a few iterations, the rim is straight again!

