Cell-phones take pictures rivaling a DSLR of just a few years ago. This brief how-to shares an insider's approach to taking product photos suitable for professional use.

Servos may be used to guide rockets, and this is a fascinating insider’s look at one equipped with ProModeler servos going faster than Mach 1 and seeing 14Gs at launch!

Is there such a thing as overspeccing servos? Or the other way around, underspeccing? If so, what do batteries have to do with any of this? As always, it depends!

Can you salvage a pack mistaken charged for a different chemistry? With 6 chemistries in common use, it happens more often than you might think. We share how-to tips.

The venerable JR DS8711, released back in 2006, isn't just long in tooth, but superseded by several ProModeler servos. We help you pick the one best for you!

Ever wondered about the difference between DC, coreless, and brushless servo-motors? This askJOHN article addresses it in a largely brand neutral way. and is generically useful because all servos - regardless of brand - use one of these three types of motors (share the link freely).

Is your avionics battery pack safe for three-flights? How about five? How can you figure out if it's safe to fly a sixth time before recharging the battery pack powering the radio system? The answer determines if you drive home happy at the end of the day, or not!

An essential workshop component, a common design defect comes from depending on foam weatherstrip to protect the fuselage surface - oops!

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