A visual aid in case the roaring engine deafens you.
With only a handful of components it is possible to create a reliable tachometer for a 2-stroke engine. The tachometer described in this post is low-cost and easy to build. It took me one evening to design, build and install it on my kart. A smaller project like this I often start in between a larger project, for example when my mind got stuck on a problem. Continue reading