Goldilocks and the 25T spline

ProModeler servos use a 25T output shaft. This means our servo arms are compatible with Futaba's (no bad thing in itself). Other manufacturers use...


DYK - how to care for LiPo packs?

Or how to stop farting away real money!

Learn how a simple chart for measuring the at rest voltage of a LiPo battery pack helps determine the state of charge, or remaining capacity. The...


Move concrete blocks!

Selecting servos for a 118" wingspan Extra 260 powered by 150cc engine, is no laughing matter. When a District 7 IMAC-pilot reports . . . (more)


Servo secrets

There are three basic types of motor inside the servo. In order of desirability these are: brushed, coreless, and brushless. Learn more . . .