I am having a perplexing problem with my Quad. Often when I run up the motors from an armed but stopped state, one motor runs mush slower, perhaps 1/4 the speed, of the other three. It is always the…Continue
"Jose, after years of doing this I recently had a similar problem with setting failsafe that turned out to be operator error on my part so you might try going back to basics. Try this: first, set your transmitter to output throttle 'below…"
The airspeed sensor works by comparing the pressure of the ambient air - the side facing tube - with the pressure of "ram air" from the front facing tube. The difference is a function of airspeed. The system does not move much…"
The million dollar question is, why do you require 6VAC? If you are trying to use a device designed to work with a wall wart (transformer) that supplies 6VAC then the device almost certainly has an internal AC-to-DC power supply…"
"The ebay solution does not supply 6VAC. Rather it is a 12 or 24 VDC to 220VAC supply to drive mains devices from countries that use 220V/50HZ. The 6V listed in the title refers to the USB DC output and that's also wrong, as it should be a…"
"And tolerance in prop height is not a problem because the largest contributor to any prop's height relative to the others is the build tolerance of the frame and flex in the frame tubes due to flight loads and differential thrust. The adapter…"
"Mike, thanks for clearing this up. I thought this was a matter of law, so it shows how much I know :-)
I just wish they would get it over with already, release the new rules, at least then we have some idea what we are facing."
"To reply to Jonathan,
I'm not sure how the quality of my company figures into this, but OK...
It sounds like David Windestål is your personal friend. So I am sorry if I offended him, or you. He may well be, as you say, "the finest,…"
"The problem is, the AMA code is based primarily on existing law - you are not allowed to fly anything except a model rocket higher than 400 ft, and even then you have to be at least 3 (might be 5) miles from an airport and not in controlled…"
"Here's a thought. Why not join the AMA (Academy of Model Aeronautics) and for about $60 a year you get the political strength of a 200,000+ strong organization that has represented small aircraft "hobby" operators for the last 75 or…"
"A couple of people seem to be having problems with prop adapters coming loose. Here is one way to prevent this that has worked for me for many years.
In the US, Loctite sells a "Green" formula retaining compound similar to…"
Electrical engineer / programmer of embedded systems by trade. Many years in R/C as a builder and flyer. I started making electric powered model airplanes in the late 1970's. It was like trying to fly a brick and I got laughed at a lot, until they developed li-poly's and brushless neodym motors!
Please tell us a bit about your UAV interest
Autonomous robotics, FPV
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