In the vein of a penny saved is a penny earned, this brief how-to shows you an easy way for making your mask serviceable for its intended duty after repeated use. Maybe it's a stretch to say it results in a free mask, but it's effectively true!

Watching some rat bastard politician on TV was the first we noticed someone wearing two filters. One with their party's logo worn over a serious N95 led us to think; 'If it's good enough for them...'

Figuring out how many cells to use for the control avionics battery pack depends on both the chemistry - and - what it is you're trying to do. Whether it's 2-cells, 4 in series/parallel, or 7 in series, the math is easy and we show you how!

Frank Tiano should have promoter on his gravestone. He was good at it. And not just for his business, but for the sport, too because three events he initially conceived to benefit his ZAP line of adhesives grew to become honest to God model aviation happenings, Top Gun, Florida Jets, and 12 O'clock High!

Selecting servos can be confusing and most guys get snookered by expensive advertising campaigns and sponsored pilots who say what they're told to. How can you figure it out for yourself? We show you how!

Reports of trouble in paradise may give pause but this brief guide shows how to address reported shortfalls while select the best servos for your expectations in 3 easy steps.

A low-buck approach for how to use a HV servo with a 6V-radio system. Best part? It applies to an X-MAXX, TRX4 or pretty much 'any' vehicle (of any brand) relying on a 6V BEC-circuit to operate the steering servo!

Buying into the marketing-driven idea of special pricing, as if costs change based on certain magical days, is a good start! Instead of cat and mouse games, we make you our best offer from the very beginning.

Interested in trying your hand at 3D? Confused by conflicting advice regarding servos? We help guide you through specs like torque, speed, current, and voltage - and why they matter. Plus what's better for you; a BEC or battery - and why!

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).

The best performance comes by feeding the servo the highest voltage for which they're rated, 8.4V but getting there can be tricky. We look at several ways of skinning this cat.

Grab a cold one, pull up a chair, this PROfiles features Bret Becker's detail oriented approach and exemplary craftsmanship. A virtual renaissance man amongst aircraft modelers, superlatives won't do for this guy.

One of modelings premier engine men, and approaching 100 years on this Earth, Clarence Lee became an icon of the sport - and is revered - for freely sharing hard won wisdom regarding model engines, their care, and handling. This profile touches on one of his creations, the Lee Custom .61 as serially produced by K&B.

A wide range of servos are suitable for this versatile model but getting the right one involves honestly evaluating yourself as a modeler to keep from farting away more than you should, or to be happy with your choice.

If you've never flown a short coupled model equipped with a tail wheel, then it's quite likely you've never experienced the joy of taking off 90° to your initial heading. As pilots, we all know at...

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!

Q. I'm curious what receivers and other electrical components you use, and maybe how you linked them together. In other words, what you find works well with your servos. A. Radio system selection...

Q. Why do some brands of digital servos hum and squeal while others don't? And are the ones making so much noise also pulling more current? A. By the time they get to us, most modelers have...

Ready to spend $700-800 on servos? Worried about making a mistake? Would you like to discover how to select the right servo for 'you' and at the same time maybe save big money?

A question that comes up fairly often regards compatibility between various brands of receivers and ProModeler servos and the short answer is yes, they're compatible because of PWM, the universal standard.

What's the connection between servo selection, and a brief how-to regarding the classic silk-and-dope model airplane finish? As occasionally happens, we detour through the unexpected coincidences of life before reaching an answer.

Happy with his ProStand purchase, Bob McDaniel of St. Leonard, MD paid us quite a compliment by saying he'd put aside both home-brew plywood and flimsy foam commercial fuselage stands in favor of...

A dead throttle servo is an, 'Oh shit!' moment for many modelers. Thing is, if you follow best practice, it's nearly a non-event. We show you how to set up your servo and linkages to avoid damage due to engine vibration and heat.

Since the BEC included with the ESC is usually limited to 5A of current and modern high performance servos can exceed this, bypassing the BEC and using a 2S LiPo is an easy solution - and inexpensive too.