"I bought this motor about a year ago for a scratch built plane. It gave it a nice look worked well enough for what I wanted but the quality was a little lacking. The biggest issue were the small gauge wires that eventually just broke. They almost…"
Sebastian's Discussions
RC Issues that are getting worse.
Started Nov 10, 2010 0 Replies 0 Likes
I have a Spektrum DX6i that I purchased for my quad. At first everything seemed to be working fine. I was able to connect my ESC's to the RX and calibrate them. I did this for all four then proceeded…Continue
Size range for Quadrotor vehicles
Started this discussion. Last reply by Pbreed Jun 10, 2011. 19 Replies 0 Likes
I would like to hear people's thoughts on the size range of these vehicles, and if anyone here is testing larger or smaller craft than what is typically seen here. Continue
Sebastian's Page
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Pbreed replied to Sebastian's discussion Size range for Quadrotor vehicles"Try this:
http://www.geekosystem.com/guy-builds-working-hoverbike/
IMHO Should be 4 counter rotating blades with hybrid electric drive.
"
flynx replied to Sebastian's discussion Size range for Quadrotor vehicles"I was doing some market research on large electric power systems and I found this brushless motor:
http://www.icare-rc.com/plettenberg_predator.htm
which can generate 65 lbs of thrust swinging a 30x10 prop. 4 of those would make…"
Arthur P. Meiners replied to Sebastian's discussion Size range for Quadrotor vehicles"There is a company in the US working on a very large quad design which could be used e.g. to get people off of very high skyscrapers in case of fire. It looks somthing like an oil rig with four large enclosed rotors and a ramp with walking bridge…"
Sebastian posted a discussionRC Issues that are getting worse.
I have a Spektrum DX6i that I purchased for my quad. At first everything seemed to be working fine. I was able to connect my ESC's to the RX and calibrate them. I did this for all four then proceeded to connect my AMP/IMU and run the calibration tool. I followed the steps, adjusting my transmitter (some controls were reversed) and save the calibration.I then disconnected the quad and went into testing. After arming I was able to get some results both by moving the controls and by rolling and…See More
Sebastian commented on Chris Anderson's blog post Great speech on the origins of Sparkfun and the growth of the new DIY electronics movement"Thank you for posting this video. It is inspiring to see people (esp. young people) succeed in their passions. I like that he is forward with the fact that he knew little about business but is "hacking" his way through it.
I would be…"
Magnus replied to Sebastian's discussion Size range for Quadrotor vehicles"Well, As i said it requires variable pitch. If one motor stops the opposite motor will only be used for balancing by changing pitch.
the two remaining motors must be able to lift the entire weight.
/Magnus"
John Ryan replied to Sebastian's discussion Size range for Quadrotor vehicles"yes there it is. That could use a face lift, something colorful like a parrot might be nice, and rubber guards surrounding the blades for a bit of safety perhaps. It might look more balanced if the pilot were in the middle and protected by a glass…"
Chris McNair replied to Sebastian's discussion Size range for Quadrotor vehicles"Would not want one of those front blades to come off and hit you!"
Sebastian Gralla replied to Sebastian's discussion Size range for Quadrotor vehicles"there is / was a Quad that can lift a human:
"
bGatti replied to Sebastian's discussion Size range for Quadrotor vehicles"One large prop is more efficient than n smaller props; The advantages of a quad are the simplicity and efficiency of direct drive motors juxtaposed against the complexity of a cyclical etc. These advantages are presumably lost as the cost and size…"
John Ryan replied to Sebastian's discussion Size range for Quadrotor vehicles"An off-the-shelf Quad might spin on its X-Axis, but a "custom" Quad built to behave like a tricopter wouldn't."
Sebastian Gralla replied to Sebastian's discussion Size range for Quadrotor vehicles"no it will spin on the X-Axis -> it flips upsite down -> it will crash into the ground, not falling, crashing!"
John Ryan replied to Sebastian's discussion Size range for Quadrotor vehicles"So it'll spin slowly to the ground rather than crashing down like a rock.
An "off-the-shelf Quad" can't fly like a tri copter, but I bet its possible to make a custom Quad that can."
Sebastian Gralla replied to Sebastian's discussion Size range for Quadrotor vehicles"show me^^
it _will_ definetly flip over because it's center of gravity is on the axis of 2 motor but one other motor is pushing up next to this axis -> it will turn this axis"
Magnus replied to Sebastian's discussion Size range for Quadrotor vehicles"It will not necessaryly flip over if has variable pitch and enough power to stay airborne with two motors. I am not saying it is easy, but maybe not impossible...
Magnus"
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Sebastian's Blog
Intesting VTOL - The Aerovel Flexrotor
Posted on September 24, 2010 at 12:00pm 10 Comments 0 Likes
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