askJohn

When's the next super special sale?

by | Monday, October 26, 2020 |
Wanna really get screwed?

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.

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Servo choice affects your experience

by | Saturday, October 24, 2020 |
Servos affect your fun, choose wisely!

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!

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About RC servo motors

by | Saturday, September 12, 2020 |

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).

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Rip Van Winkle, on returning to RC

by | Friday, September 4, 2020 |
Gone for 30 years? On what you've missed.

30 years is a long time in the world of technology, and RC has been no exception in advancing at a rapid pace. This brief article endeavors to help bring you up to speed regarding what you've missed!

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On Clarence Lee

by | Tuesday, May 5, 2020 |
Get one while you still can!

Clarence Lee is 97 years old and while still in good health, if you ever wanted one of his great running K&B .61 Customs, do it while you can!

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On using a gyro for rudder

by | Friday, February 28, 2020 |

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...

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From photo to sky

by | Wednesday, January 22, 2020 |

The inspiration behind recreating an aircraft in model form; or what bites a guy enough for him to work so very hard to succeed is often a photo. So I've titled this article from photo to sky to...

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Let's gore an RF-ox!

by | Tuesday, December 3, 2019 |

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...

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On big bipes and selecting servos

by | Monday, November 25, 2019 |
Servos - good, better, or best?

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?

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Silk and dope – demystifying modeling's classic finish!

by | Wednesday, August 28, 2019 |
Silk-and-dope the classsic model airplane finish

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.

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ProStand - a user report

by | Wednesday, July 31, 2019 |

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...

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Gasser throttle servo?

by | Monday, July 15, 2019 |

Which throttle servo would you recommend for a gasser? Many criticize using mini-servos in this application, can your mini servos take it? And because it's quite fast, what are your thoughts on using a tail rotor servo?

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Bypassing the BEC

by | Sunday, June 9, 2019 |

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.

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Are ProModeler servos programmable?

by | Tuesday, May 21, 2019 |
Programming at the transmitter is easier

A standalone servo programmer is something of a kludge because each servo must be removed from the airframe to access the lead, to disconnect it from the wiring harness and plug into the programmer. Rinse repeat for any adjustment - what a pain!.

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Fear of loss!

by | Wednesday, April 3, 2019 |
or why otherwise sensible modelers use two batteries!

Marketing types push your buttons by using words like 'safety' to get you to ignore common sense and outfit your model with two battery packs. We explain why this is just BS designed to get rubes off their wallets.

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Servo connectors & extensions

by | Thursday, February 28, 2019 |
Why getting what you pay for can be tricky!

I occasionally field questions regarding servo connectors and extensions (especially for giant scale models). Let's briefly delve into some mechanical and electrical considerations because basically, we (all brands) play by similar rules.

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About pots vs Hall Effect sensors

by | Thursday, November 1, 2018 |
Going to pot is never good!

The best potentiometers are rated at a million cycles while electronic Hall Effect sensors have a theoretical unlimited lifespan. This means pots are wear items. Does this make magnetic sensor technology a no-brainer? Not so quick!

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Brotherly Love

by | Wednesday, March 7, 2018 |
A story of two brothers

When I received this nice photo of a 62" AJ Models Acuity from Nick Ziegler following his review of our DS160CLHV mini-class servos I wanted to share.

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