Thread Tools
Jan 25, 2013, 06:30 AM
Registered User
u2builder's Avatar
Here's the rub: if you don't have the GPS a radio/rx glitch could cost you your entire investment. So if you don't have a GPS I am thinking the RX should definitely have individual channel failsafe so that if you lose radio signal you could set up the RX to cause the machine to circle and descend (by setting aileron, rudder and throttle). This has nothing to do with NAZA and would involve one's own guess at the setup with little sensible way to "test" it. If this is not done, there is a real likelyhood that a radio glitch will cause the machine will run away and there is a fair chance you will never see it again. I have had probably a half dozen radio/rx failures due to strange, different and unpredictable factors. The GPS has saved my investment a half dozen times. Just sayin.

Also, while I would trust name brand radio equipment more than cheap clones, there are many, many cases in this hobby where top name radio equipment has failed. One fellow at our club who uses top of the line equipment everywhere watched his 40% Extra sail off into the sunset (and eventually the trees and ground) when a top of the line RX failed.
Sign up now
to remove ads between posts
Jan 25, 2013, 06:34 AM
Suspended Account
Quote:
Originally Posted by T J Gilbert
Thanks!
I'll know where to send someone now...
Please dont send me there anymore!
Jan 25, 2013, 07:27 AM
Registered User
Quote:
Originally Posted by alwaysconfused
did you have it in manual mode or atti or gps-atti? Either way..manual is gonna be a learning experience. In GPS-atti you will be dealing with gains until you talk gains in your sleep but it is soooo worth it!
I had it in GPS-Atti but the gains were all set to 100% so now I have recommended gains programmed in and will try again.
All very new to me, only multi I have flown todate is the little Helimax bug.
So I am way over my head at moment! Have ordered a AR8000 so I can activate fail safe. Next to try different IOC modes and all the rest of the stuff that I have to learn and try.
BTW for training and such, IE no camera just 3300 battery for load, which props are best? I plan on needing a few dozen before I get the hang of these birds. Are the stock props too prone to breaking in flight? If so what is next most cost effective "trainer prop" I will up grade to Groupners later.

Tim
Jan 25, 2013, 08:17 AM
DJI Support
Tahoe Ed's Avatar
Tim you don't say if the 3300 battery is 4S or 3S. For 3S use 10" props, for 4S us 8" props. DJI has just introduced new 10" props that look pretty sweet.
Latest blog entry: M200 FAQ's
Jan 25, 2013, 08:30 AM
Registered User
Quote:
Originally Posted by Tahoe Ed
Tim you don't say if the 3300 battery is 4S or 3S. For 3S use 10" props, for 4S us 8" props. DJI has just introduced new 10" props that look pretty sweet.
I have 4S in 2200 and 3300 sizes, have some 2600 3S also.
I was going to order some of the new 10"D JI and give those a try. I was given some MAS 3 blades, I believe they are 8", anyone tried those?

Tim
Jan 25, 2013, 08:34 AM
Suspended Account
Tahoe Ed please check your message box
Jan 25, 2013, 08:35 AM
DJI Support
Tahoe Ed's Avatar
Tri blades are very difficult to balance. I would stick with normal props for now. Any of those lipos will work. If you have some 8" props and some 10's, try both and see what you like best. I am flying 8" on my F330 and my F450.
Latest blog entry: M200 FAQ's
Jan 25, 2013, 09:15 AM
Since 1902. Maybe.
Olivier_C's Avatar
9" Graupners ! 9" Graupners 9" ! Graupners !

"Olivier, promoting 9" Graupners since 1902"

The F450 with 9"+4S is a beast, you can fly it like a plane :]

I personally consider the DJI props as a no-go, to save few bucks you take the risk of having it break when it's at eyes level 2 meters away, or when it's high enough in the sky so it will make a small crater, because it doesn't glide very well...
Last edited by Olivier_C; Jan 25, 2013 at 09:21 AM.
Jan 25, 2013, 09:19 AM
Flying R/C since 1964
kallend's Avatar
Quote:
Originally Posted by u2builder
Here's the rub: if you don't have the GPS a radio/rx glitch could cost you your entire investment. So if you don't have a GPS I am thinking the RX should definitely have individual channel failsafe so that if you lose radio signal you could set up the RX to cause the machine to circle and descend (by setting aileron, rudder and throttle). This has nothing to do with NAZA and would involve one's own guess at the setup with little sensible way to "test" it. If this is not done, there is a real likelyhood that a radio glitch will cause the machine will run away and there is a fair chance you will never see it again. I have had probably a half dozen radio/rx failures due to strange, different and unpredictable factors. The GPS has saved my investment a half dozen times. Just sayin.
.
You don't need a GPS to get a soft NAZA controlled landing in the event of signal failure. All you miss without the GPS is the "return to home" feature.

Programming your individual aileron, rudder and throttle channels and circumventing the NAZA doesn't seem very sensible to me.
Latest blog entry: Using a DX9 to "strobe" LED...
Jan 25, 2013, 09:23 AM
Suspended Account
I saw the testing video on the new DJI 10 inch composite props and I must say their performance under abuse was 5 star all the way!
Jan 25, 2013, 09:24 AM
Since 1902. Maybe.
Olivier_C's Avatar
Plus if you set like aileron=0, rudder=0, pitch=0, throttle=40% so it goes back to the ground, it may be ugly when it touch the ground and the props keep turning. Whereas the Naza fail mode will (should) detect the ground contact and will stop the motors.
Jan 25, 2013, 09:24 AM
Empire Support
T J Gilbert's Avatar

He's Right...


Quote:
Originally Posted by kallend
You don't need a GPS to get a soft NAZA controlled landing in the event of signal failure. All you miss without the GPS is the "return to home" feature.

Programming your individual aileron, rudder and throttle channels and circumventing the NAZA doesn't seem very sensible to me.
You guys have forgotten what Failsafe did before GPS was introduced.
I was there, and the auto land did a good job...
Jan 25, 2013, 09:29 AM
I never finish anyth
Quote:
Originally Posted by T J Gilbert
You guys have forgotten what Failsafe did before GPS was introduced.
I was there, and the auto land did a good job...
.... unless you were over water. Or a playground full of kids. Or over a highway. Or an active volcano. Or a lions den.
Jan 25, 2013, 09:36 AM
Flying R/C since 1964
kallend's Avatar
Quote:
Originally Posted by MCrites
.... unless you were over water. Or a playground full of kids. Or over a highway. Or an active volcano. Or a lions den.
You've been to my club?

On the whole I still think a stabilized soft descent is preferable to an uncontrolled descent of any kind.
Latest blog entry: Using a DX9 to "strobe" LED...
Jan 25, 2013, 09:36 AM
DJI Support
Tahoe Ed's Avatar
Quote:
Originally Posted by MCrites
.... unless you were over water. Or a playground full of kids. Or over a highway. Or an active volcano. Or a lions den.
Volcano!!! I am not flying with you.
Latest blog entry: M200 FAQ's


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
New Product DJI WooKong-M Autopilot System for multirotors **Owners Thread** DJI INNOVATIONS Multirotor Drone Electronics 20299 Apr 12, 2017 06:23 PM
New Product MultiWiiCopter "MiniWii" FC - Cheap, small 6DOF FC JussiH Multirotor Drone Talk 707 Jan 01, 2013 08:54 AM
Discussion DJI Innovation helicopter autopilot XP.3.1 for European customers JoelT Aerial Photography 2 Sep 24, 2009 11:43 AM
New Product United Hobbies FC 28-05 & FC 28-22 brushless outrunners $5.95 ea. JawaSnack Hot Online Deals 9 Jul 17, 2007 10:31 AM
Futaba FC-18 teacher to FC-16 pupil problem . jmquetin Radios 5 Nov 02, 2004 06:48 AM