Written by Chris Mulcahy
RC Helicopters
Column
As seen in the February 2014 issue of Model Aviation.
For many of us, these early months of the year are cold, with wintery weather in full swing. This limits our flying time outside. Although it is a good time to get in some simulator practice, it is also a great time to tear down our helicopters for some maintenance.
Our helis talk to us when they fly, and we learn to listen to them and identify potential problems by the sounds they make. However, many problems can develop without giving us any kind of audible warning, and this is…