HELI TALK: GREASE ‘EM UP — Important of Bearing Lubrication

Bearing lubrication is a regular source of debate in the RC helicopter world, starting with whether to relube bearings or simply replace as needed. In the former case, the best tools, materials, and techniques for servicing bearings can be a source of confusion for many fliers. This month, we'll try to cut through the fog and offer some practical tips. Modern RC helis use a variety of ball bearings. The thrust bearings in blade grips...