Mark Lewus
  • Male
  • Denville, NJ
  • United States
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One Motor Intermittently Runs Slowly?

Started this discussion. Last reply by Mark Lewus Jul 5, 2013. 2 Replies

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

Tags: 2.0, APM, Poles, ESC, Motor

 

Mark Lewus's Page

Latest Activity

Mark Lewus commented on Martin Rüedi's blog post FlightZoomer 2.0 is released!
"All I can say is... Wow!"
Jul 3, 2016
Mark Lewus commented on Crispin's blog post Spektrum DX8 and AR8000 Failsafe setup
"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…"
Jul 3, 2016
Mark Lewus replied to Rob_Lefebvre's discussion Notification: My Community Support Ending
"Rob, your efforts have been a great help to the ArduCopter community. Good luck in your future endeavors!"
Feb 14, 2016
Mark Lewus replied to Roger Monongo's discussion Airspeed sensor tube, does length matters? in the group ArduPlane User Group
"Hi Roger, 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…"
Nov 18, 2015
Mark Lewus commented on lilvinz's blog post quanton flight control
"Maybe a currency exchange thing?"
Apr 21, 2015
Mark Lewus replied to elad orbach's discussion my diy ground control station
"Hi William,  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…"
May 29, 2014
Mark Lewus replied to elad orbach's discussion my diy ground control station
"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…"
May 29, 2014
Mark Lewus commented on lilvinz's blog post quanton flight control
"What kind of help do you need?"
Jan 10, 2014
Mark Lewus replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes
"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…"
Sep 3, 2012
Mark Lewus commented on Chris Anderson's blog post Regulatory FAQ
"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."
Aug 31, 2012
Mark Lewus commented on Chris Anderson's blog post Regulatory FAQ
"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,…"
Aug 31, 2012
Mark Lewus commented on Chris Anderson's blog post Regulatory FAQ
"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…"
Aug 30, 2012
Mark Lewus commented on Chris Anderson's blog post Regulatory FAQ
"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…"
Aug 29, 2012
Mark Lewus replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes
"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…"
Aug 28, 2012

Profile Information

About Me:
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
Hometown:
Denville, NJ

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