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Old Oct 16, 2012, 02:36 PM
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If set up properly you can watch where your throttle setting goes while in the assistant. Switched failsafe sets the throttle at hover speed 50% or so. Hook it up and watch it. What was your battery voltage after you crashed? Were you in cutout?
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Old Oct 16, 2012, 03:20 PM
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DeltaPopper


"Question: Does failsafe kick-in for throttle too low (like under 10%) or just "Lost Signal"?"
Is below 10% what you did when you started down?
If so, why?
Below 10% has different results depending on whether you're using "Immediate" or "Intelligent" mode.
Either way, below 10% is not wise...
It will make any rotor craft drop like a rock.
Old Oct 16, 2012, 03:33 PM
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Quote:
Originally Posted by DeltaPopper View Post
Does failsafe kick-in for throttle too low (like under 10%) or just "Lost Signal"?
It kicks in when the control mode channel goes into a position that indicates 'failsafe'. Nothing to do with throttle.
Old Oct 16, 2012, 03:44 PM
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Consult Our "Vague" Naza Manual...


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Originally Posted by Bill Glover View Post
It kicks in when the control mode channel goes into a position that indicates 'failsafe'. Nothing to do with throttle.
The manual makes a statement at the top of page 17 that I don't quite understand & I've never tested (and don't plan to...) about below 10% in "Intelligent" mode.
I think that's what prompted DeltaPopper's question.
Below 10% is still a risk IMO...
Old Oct 16, 2012, 04:07 PM
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My guess is that with IOC if you put the throttle below 10% it stops the engines and you have to use CSC to start them again. But in the videos the engines sounded like they were still running. It did flip a little from side to side, so perhaps it lost or partically lost a motor due to a bad solder joint.
Old Oct 16, 2012, 04:14 PM
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if you throttle up right away you dont have to re-arm the motors.

steve
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Old Oct 16, 2012, 04:18 PM
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Quote:
Originally Posted by T J Gilbert View Post
"Question: Does failsafe kick-in for throttle too low (like under 10%) or just "Lost Signal"?"
Is below 10% what you did when you started down?
If so, why?
Below 10% has different results depending on whether you're using "Immediate" or "Intelligent" mode.
Either way, below 10% is not wise...
It will make any rotor craft drop like a rock.
I knew my lipo was getting low so I lowered the throttle to get back quickly. I'm not sure if it went below 10%. How would I know?
I do have failsafe set at 50% throttle as shown on assistant.
I did not flip my failsafe switch. I guess panic set in.
Old Oct 16, 2012, 04:25 PM
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Quote:
Originally Posted by mikemijal View Post
I'm looking forward to seeing it. Not because i'm into seeing something grusome, But I want to show a couple of friends of mine the seriousness of flying a multicopter. Especially in populated areas!!
and this is why you disable the motors or remove the props. it is acually worse than the pic shows. (crappy cell phone)

see the prop on table, i dug a chunk of it out of my arm as well.
Old Oct 16, 2012, 04:39 PM
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Quote:
Originally Posted by crash8384 View Post
and this is why you disable the motors or remove the props. it is acually worse than the pic shows. (crappy cell phone)

see the prop on table, i dug a chunk of it out of my arm as well.
Dang... sorry about that. I will definitely be removing my props. I was planning to upgrade my firmware this evening so I'm glad I read this, especially with my luck with the quad lately.

I'm kind of glad the pics are a bit blurry... Eating lunch at the moment.

Hope you heal quickly!
Old Oct 16, 2012, 04:42 PM
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Quote:
Originally Posted by saabguyspg View Post
if you throttle up right away you dont have to re-arm the motors.

steve
I did move the throttle back up to the max as she was falling. If you listen to the audio on the video, it seems on the way down it was a different sound, like maybe "auto-rotation" or spinning backwards? Just a guess as I'm still in the early stages of mastering this hobby. Thanks to all for your comments.
Old Oct 16, 2012, 04:45 PM
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Quote:
Originally Posted by crash8384 View Post
and this is why you disable the motors or remove the props. it is acually worse than the pic shows. (crappy cell phone)

see the prop on table, i dug a chunk of it out of my arm as well.

nasty mess.
Will defiantly be careful with mine as I use the BEVRC carbon blades. They are sharp
Old Oct 16, 2012, 04:45 PM
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Lowering Throttle


Quote:
Originally Posted by DeltaPopper View Post
I knew my lipo was getting low so I lowered the throttle to get back quickly. I'm not sure if it went below 10%. How would I know?
I do have failsafe set at 50% throttle as shown on assistant.
I did not flip my failsafe switch. I guess panic set in.
I think you've got to condition yourself to not make sudden throttle drops when flying rotor craft. On a plane, that's what many do at the hint of trouble, but then you can glide.
It's been my experience flying heli's and multirotors that just a small amount below center stick sends your craft down faster than you'd really expect. A heli actually carries some momentum in it's blades, and the throttle drop is not quite as drastic.

We could hear your motors like u2builder said, and you might not have gone below 10%, but if you were at 35% you were still probably in freefall.
If you did go to below 10% for more than 5 sec, and you are setup for "Immediate" mode, your motors were dead, and might have been freewheeling or auto-rotating. The way I understand it, the CSC was your only hope to regain motor control at that point. Raising the throttle, even to max, would have had no effect.
If you panic, a better move than dropping the throttle is attempting to engage Failsafe.

I fly planes as well as rotor craft, and I think the rotor craft flying skills make me a better plane pilot.
It steels your nerves, makes you more attentive, and slows your making exaggerated stick movements.
Just my $.02...
Last edited by T J Gilbert; Oct 16, 2012 at 04:53 PM. Reason: Added more
Old Oct 16, 2012, 04:48 PM
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Quote:
Originally Posted by T J Gilbert View Post
The manual makes a statement at the top of page 17 that I don't quite understand & I've never tested (and don't plan to...) about below 10% in "Intelligent" mode.
I think that's what prompted DeltaPopper's question.
Below 10% is still a risk IMO...
I understood it to mean that if you have Intelligent cutoff type set, closing the throttle below 10% will result in a controlled descent (with auto levelling) ... rather than it dropping like a brick.

I use immediate though, and accept that it will fall out of the sky if I'm silly enough to completely shut the throttle!
Old Oct 16, 2012, 06:30 PM
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If you were any closer; I'd give you some Benzalkonium Chloride to put on that.

Quote:
Originally Posted by crash8384 View Post
and this is why you disable the motors or remove the props. it is acually worse than the pic shows. (crappy cell phone)

see the prop on table, i dug a chunk of it out of my arm as well.
Old Oct 16, 2012, 06:31 PM
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mudlark,

Do you like those blades?


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Originally Posted by mudlark View Post
nasty mess.
Will defiantly be careful with mine as I use the BEVRC carbon blades. They are sharp


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