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HomeRC & Power✈️Aircraft🚁HelicopterRadio - Futaba FASST › Failsafe Settings
04-27-2011 07:00 PM  10 years ago
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chopper63

rrApprentice

West Coast Chopper

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Failsafe Settings
Last commanded position or hold position? What is your preference and why?

Also, I'm reading the manual, page 63, but can't get the 14mz 2.4 to change for each channel
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04-27-2011 07:46 PM  10 years ago
BarracudaHockey

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Jacksonville FL

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With a heli, other than throttle to idle or shut off, I can't see it mattering a whole lot.Andy
AMA 77227
http://www.jaxrc.com
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04-27-2011 09:03 PM  10 years ago
Skaluf

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Champaign, IL

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Hold except for throttle IMHO. Which receiver are you using?

Steve
Steve Kaluf
Hobbico
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04-28-2011 12:36 AM  10 years ago
Thomas L Erb

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Alliance ohio

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I vote for hold on all except throttle to low
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04-28-2011 12:48 AM  10 years ago
Dood

rrProfessor

Wescanson

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I've given this some thought in the past.

If you lose the radio link with your helicopter, you can be pretty sure its a goner. Either way, it's going in. It's pretty much inevitable, that much we can all accept.

Since this is deviant from the standard or norm, as you read through this, try and keep an open mind. Consider the most likely scenarios and not worst-case scenarios.

But, what if you program your helicopter to go to full pos+ collective and low throttle upon loss of the radio link? Granted, if your heli is inverted and low to the ground, it will hit with tremendous force.

But what about every other scenario? I think your heli, at any given moment, is most likely to be in an upright attitude, and you may have considerable altitude, perhaps 30-40 feet or more (unless you're a hard-core, down low guy). If you go to full collective along with zero throttle, the rotor RPM will drop significantly in a hurry. It also might gain altitude, buying time for the chance you regain control and try to save it.

Rapidly lowering rotor RPM might decrease the chances of a more expensive repair, regardless of how high the helicopter fell. for sure it might save your blades.

Most importantly, I think lowering the rotor RPM might also reduce the chances of a serious injury to the pilot or bystanders.

Give this some thought and tell me what you think.
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04-28-2011 05:13 AM  10 years ago
chopper63

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West Coast Chopper

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750 and S-Bus.
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04-28-2011 11:05 AM  10 years ago
Thomas L Erb

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Alliance ohio

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Dood I like the line of thinking you have about this. It is all about getting the model into a "safe" condition. If you hold everything the model will at least be predictable in the path it will take as it will keep doing what it is doing until it hits the ground.

Your idea will greatly speed the slowing of the headspeed but at the same time throw an unpredictable violent movement to the scenario. Most of the time this will be in a direction that may not cause any issue but is it worth the chance that it may add issues to an already bad condition? That is what i think about when it comes to this situation.

My problem is that i can not say with 100% certainty what will happen as I have yet since starting to use FASST had this issue arise and hope it never does
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04-28-2011 03:57 PM  10 years ago
BarracudaHockey

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Jacksonville FL

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Interesting, I like the idea of knocking down the head speed, my concern would be where it goes with full collective.Andy
AMA 77227
http://www.jaxrc.com
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