"Fully with you in damping the vibration nearest to its source. I would google for "sound card spectrum analyzer" and mechanically attach a light microphone to the frame.  That would be cheap and will give you a baseline to start…"

"Congrats Jani & jDrones team!  Exciting to see you also expanding. -mikko"

"  Thanks a lot for the invitation to the group!! <Deep Japanese bow>  I am proud of having received Russel's email.      Some notes / comments / questions:   WOW!  Excellent list.   I assume…"

"  A tube form by itself is rather unstable as a "lifting body". Wings are there for the same capacity as a sailing boat's keel: to keep is going where its pointing. They also generate some amount of lift which is needed if and…"

"Not being experienced in dropping 1 kg capsules from 35 km altitude I'll start with some modeler's common sense...   Given your dimensions and reasoning that your speed range would be around 200 to 300 km/h, I would consider  1.…"

"Krzysztof    & Lojze as well,   Thanks for sharing!  Much appreciated. Great stuff!   -mikko"

"Your are absolutely right.  Sorry for confusing the crowd. I have no idea how did I end up with a wrong datasheet!   -mikko"

"I just checked both of the data sheets and t seems that their sensitivities are in deed different. Older MPXV5004DP: Output voltage goes from 1.0V to 5.0V for the pressure range from 0 to 4.0 kPa. Sensitivity 1V/kPa Newer MPXV7007DP: Output…"

"Ack & Thanks -m"

"Hi guys, I also have MPXV500 airspeed sensor (well - two of them...) - both from DIYDrones Store. I am getting 1420..1440 when the sensor is connected and 2550..2790 when the sensor is not connected. (A handful of samples for both cases, ambient…"

"You definitely want to have RC flying experience first!!   My 2 cents is to buy a cheap and easy to fly plane and (crash and) fly it for one season at least so that you have the routine and feel of how a plane behaves and can control the plane…"

"You would need to clarify your mission parameters a bit more.  What is your inexpensive?  How long are you planning to stay airborne? Why top-speed limits?     My gut numbers for you: With 12 kg payload on a plane you would need…"

"This earlier discussion (a short one...) may provide what you are looking for.   cheers -mikko"

"Guys,   For protecting Electronics, DO NOT USE normal SILICONs anywhere!  (Silicon may also contaminate your workshop and materials making painting and glueing a real challeng, but that is an other story.)  Silicon in electronics…"

"Hi Marshall,   Adding to what Chris and Doug are saying:   I would first build the glider with RC gear included and trim both the glider and the APM so that it glides in a stable fashion - including loitering and making the waypoint turns.…"

"Good source for all (or at least most of..) your composite building techniques: http://www.rcgroups.com/composites-fabrication-210/ -mikko"