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cj replied to Forrest Frantz's discussion Building Copters with Round Tubes - Stronger, Lighter, Easier to Mount Motors than Square Tubes in ArduCopter User Group
"another mobius gimbal using the 1806 motors:
http://www.rcgroups.com/forums/showthread.php?t=2325358"
Jan 18, 2015
cj replied to Forrest Frantz's discussion Building Copters with Round Tubes - Stronger, Lighter, Easier to Mount Motors than Square Tubes in ArduCopter User Group
"Thats interesting news, look forward to hearing your findings.

Jon - keep the posts coming, looks like you are doing a great job there !

I'm playing around with Frantz's spreadsheet at the moment, probably going for a slightly smaller frame, with…"
Nov 27, 2014
cj replied to Forrest Frantz's discussion Building Copters with Round Tubes - Stronger, Lighter, Easier to Mount Motors than Square Tubes in ArduCopter User Group
"These Multistar 268kv motors look interesting:
http://www.hobbyking.co.uk/hobbyking/store/__63642__Multistar_Elite..."
Nov 26, 2014
cj replied to Forrest Frantz's discussion Building Copters with Round Tubes - Stronger, Lighter, Easier to Mount Motors than Square Tubes in ArduCopter User Group
"Fascinating, I have lots to learn !
So are you keeping the arms as two pieces above and below the EP, or going to use 3 sections mitred together ?"
Nov 26, 2014
cj replied to Forrest Frantz's discussion Building Copters with Round Tubes - Stronger, Lighter, Easier to Mount Motors than Square Tubes in ArduCopter User Group
"Hi Jon,
Thanks for that, good idea.
I did consider going for an H but thought, from reading here, that the frame would be more rigid with an X. The X would also allow a non structural isolated EP so helping with the gimbal vibrations.
In reality I…"
Nov 26, 2014
cj replied to Forrest Frantz's discussion Building Copters with Round Tubes - Stronger, Lighter, Easier to Mount Motors than Square Tubes in ArduCopter User Group
"Interesting points to consider, part drilling the motor mast is a great idea, that would halve the weight without sacrificing any strength"
Nov 25, 2014
cj replied to Forrest Frantz's discussion Building Copters with Round Tubes - Stronger, Lighter, Easier to Mount Motors than Square Tubes in ArduCopter User Group
"Indeed, I was planning to bond the rails, but your previous post led me to that suggestion. Although I immediately see in my design that the mounting points will be possibly too close to the centre of the rails for the length of the rails. - as you…"
Nov 25, 2014
cj replied to Forrest Frantz's discussion Building Copters with Round Tubes - Stronger, Lighter, Easier to Mount Motors than Square Tubes in ArduCopter User Group
"Regarding engine mounts:
Frantz, I take your point about the boom blocks and nylon screws adding excessive weight.
The larger motorsseem to generally be mounted directly onto the mounting plates rather than with the extra metal X bracket used on the…"
Nov 25, 2014
cj replied to Forrest Frantz's discussion Building Copters with Round Tubes - Stronger, Lighter, Easier to Mount Motors than Square Tubes in ArduCopter User Group
"Thanks for the updates Jon and Frantz, all very interesting.

Jon, I would love to see some pics when you are ready, it does sound like you have been applying a lot of thought to your build. I wasn't sure what you meant by 'tow' ? And how do you…"
Nov 25, 2014
cj replied to Forrest Frantz's discussion Building Copters with Round Tubes - Stronger, Lighter, Easier to Mount Motors than Square Tubes in ArduCopter User Group
"Great thread.
@Jon - How is your quad coming along ? I'm planning on something similar, I want to make something as small and light as I can to carry a Ricoh GR and tilt servo gimbal of about 450g weight.
Here is a European link honeycomb elecronics…"
Nov 24, 2014
cj replied to Todd's discussion Pixhawk on a DJI S900
"Looks like Roberto has it working fine:
https://www.youtube.com/watch?v=i5q1iM6_37U"
Oct 19, 2014
cj replied to Jonathan Bowles's discussion Ricoh GR for aerial photography
"You can use a cable like this
http://www.gentles.ltd.uk/gentwire/videousb.htm

for video (live view) out over usb and fire your shutter too"
Jul 24, 2014
cj commented on Roberto Navoni's blog post Virtualrobotix Electronic boards Roadmap : VR Brain standard and Micro rev 5 ,VR GPS AND VR Link the advanced telemetry kit.
"Great news, an excellent option, especially for us Europeans. I look forward to the release date."
May 25, 2014
cj commented on Bill Bonney's blog post Announcing APM Planner 2.0 RC1 -- the cross-platform GCS for Mac, Windows and Linux
"great news - would love a compiled verion for linux ubuntu"
Dec 29, 2013
cj posted a discussion
Can't find any comments on this camera here (although the search function is quite poor) so thought I would start one.It seems as ideal camera for aerial photography with a 16MP APSC sensor and a dedicated 28mm  (35mm equiv) lens of high quality. It…
Nov 24, 2013