renaud barbier
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renaud barbier's Discussions

power a DJI A2 with 7S

Started this discussion. Last reply by zane Apr 1. 2 Replies

hello guys, whats your recommendation on how to power a DJI A2 controller when motors runs on 7S or more...?A2 PMU is only 2-6S...Continue

large U8-135kV quad tunning

Started this discussion. Last reply by Scott Feb 19. 1 Reply

http://www.youtube.com/watch?v=1_XdFcAjjKchi,running AC3.1 on a new large quad with U8-135kV and 29" props.after lots of difficulties…Continue

Altitude hold APM vs Naza

Started Dec 14, 2013 0 Replies

I am wondering why there is not sonar on naza and altitude hold is great while with APM it is also great but for low altitude we use sonar.why?can anybody give some info on that topic?thanksContinue

Tmotor U8

Started this discussion. Last reply by Gary Mortimer Dec 17, 2013. 4 Replies

hello,has anybody received Tmotor U8? I ordered mine almost 3 months ago and still no news...Continue

 

renaud barbier's Page

Latest Activity

Emin Bu commented on renaud barbier's blog post U8 large quad
"In BLHeli you can set all parameters,most important is Demag compensation, Damping force and Motor timing "
Monday
Emin Bu commented on renaud barbier's blog post U8 large quad
"I also did autotune with 15x5 props on 6S same 400KV 650W motors,no problem...problem with big props and slow rotation is to have proper ESC who can handle that....with 6S 15x5 I used normal Turnigy Plush 40A,no problems..with 4S and 18x5.5,motor…"
Monday
Euan Ramsay commented on renaud barbier's blog post U8 large quad
"380kv and 14" = autotune no problems. It was pretty far out (over tuned), but it did at least complete the program. Way I see it - big props need more torque to respond to acceleration requests. If your motor can't deliver that torque,…"
Monday
Emin Bu commented on renaud barbier's blog post U8 large quad
"What a nonsense that APM cant handle bigger props...No problem with 400KV motors and 18x5.5 props and APM...autotune I did not try"
Monday
renaud barbier commented on AKRCGUY's blog post SteadiDrone Releases NEW QU4D X With 60 Min Flight Time
"I don't know about the steadidone but we are also selling similar copters (in X8 config as the quad is not reliable enough...already had one U8 defective...). from our experience and users feedback: - actually very stable, smooth to fly…"
Friday
zane replied to renaud barbier's discussion power a DJI A2 with 7S
Apr 1
zane replied to renaud barbier's discussion power a DJI A2 with 7S
"In your case yo u"
Apr 1
renaud barbier commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"nice, what is the link to the battery you used?"
Mar 23
renaud barbier replied to cirilo's discussion 3 crashes in 1 flight : need your help guys !!!!
"Hello, Had issues on u8 motors and simonk rctimer esc. "Pop" noise changed back to my favorite tmotor 40A and all ok! A bientot."
Mar 21

T3
Thorsten commented on renaud barbier's blog post U8 large quad
"No problem with autotune and 17'' props, crash with 18'' props..."
Mar 20

T3
Thorsten commented on renaud barbier's blog post U8 large quad
"I am playing with two different types of motors and always try to keep it hover at 50% throttle*. So that should not be the problem. Maybe there is some difference between a quad and a hexa? But I observed no differences between high frequency IMU…"
Mar 18
James Overington commented on renaud barbier's blog post U8 large quad
"I too keep seeing reference to issues with large props. In general, there seems to be a view that larger props are less responsive. I have never seen any data to support this. I currently use 16x8 props but I have a set of 17x8 that I have used with…"
Mar 18

T3
Thorsten commented on renaud barbier's blog post U8 large quad
"Autotune worked fine with 15'' and 16'' props. I haven't tried it so far using 17'' (I first have to balance the props. There were heavy visible vibrations of the arms but it was pretty stable in loiter anyway).…"
Mar 18
Paul Jenness commented on renaud barbier's blog post U8 large quad
"Heres that comment again.   "Large Props no good for APM"...  Is that actually true or is it just settings need more carefully configured? Then APM2.6, Pixhawk ??  On another thread Gary mentioned Pixhawk is as powerful…"
Mar 18
OG commented on renaud barbier's blog post U8 large quad
"I had to move to the Wookong as well for 17-18 inch props 15 are the max size for APM 2.5."
Mar 18

T3
Thorsten commented on renaud barbier's blog post U8 large quad
"Interesting discussion! I am currently experimenting with 17'' and 18'' props on different hexa setups. While a lighter hexa with 3.5kg AUW and 17'' works fine the 18'' version with 4.5kg AUW is hard to…"
Mar 18

Profile Information

Please tell us a bit about your UAV interest
building an hexa
Hometown:
paris

Renaud barbier's Blog

U8 large quad

Posted on March 10, 2014 at 12:00pm 38 Comments

https://www.youtube.com/watch?v=105CfuFx6yI

 

After months waiting for motors and props, we finally managed to put our large quad up in the air!

 

It flies up to 56min and can currently carry nex 7. next one will be with zenmuse 5D! can't wait!

 

It was pretty…

Continue

Microdrone md4-1000 - incredible flight time

Posted on August 5, 2013 at 12:00pm 26 Comments

 

Not sure if anyone has seen this before... saw it by coincidence today...

 

They have 2 interesting models md4-1000 and md4-3000

 

50km range, 88 minutes flight!

 

Check this out!

 …

Continue

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