It is common practice in many amateur-built engine installations, from Rotaxes to Lycomings, to use K&N filters. They do a wonderful job of filtering the air, and they are reusable. However, they only are able to perform correctly if they are properly cared for. They should be cleaned annually at a minimum with K&N filter cleaner and then lightly oiled with K&N filter oil. Without the oil, which leaves a slight pink color on the filter, they will not filter properly. The one in the photo above was not oiled.
In Case You Missed it
What Capability Are You Building Toward?
New home, new airport—they present an opportunity to learn. This learning has been especially...
Build Your Skills: Fabric
Finishing tapes not only strengthen areas that need reinforcement, but they also cover unsightly screws, rivets and rib-lacing cord. This month we cover the types of tapes available, where they should be applied and how to apply them; by Ron Alexander.