Failsafe settings for safety. - RCCanada - Canada Radio Controlled Hobby Forum
RCCanada - Canada's Radio Control Hobby Forum
General RC Aircraft Discussion Discuss anything RC related

Closed Thread
Thread Tools Display Modes
Old 06-29-2006, 08:23 PM   #1
RCC Pro Contributor
JimBrown's Avatar
I am: Jim Brown
Join Date: Mar 2003
Location: Rockland, Ont.
Radio of choice:
Jeti DS-16
# of RCs: 10

Feedback: 18 / 100%
Posts: 1,937
Total Props: 4
Failsafe settings for safety.

       Remove this ad - become a site supporter!
I don't know about you guys, but after seeing/reading about that incident in Europe that resulted in two fatalities, I now set all my failsafe equiped aircraft to go to a snap roll on complete loss of signal, with engine to idle (or shut down, should I ever get a turbine.)

My thinking is that if I've lost complete control of the aircraft, I want it slowed down and on the ground as fast as possible. If I've lost complete control of the aircraft, it's going to be rekitted anyway, I don't want it going off in some unknown direction for some unknown distance.

It's not perfect, but it's the best I can come up with.

This may not be feasable with all types of failsafe. However, with my Multiplex IPD receivers, this is a good choice. The reason I say this is that the IPD receivers will fly through minor interference without glitching or "locking out". Only on complete loss of signal will they go to fail safe. Most other failsafe systems are similar. Not all though.

I encourage others to do the same where possible.

JimBrown is offline   Quick reply to this message.

Sponsored Links - Subscribe to remove this ad.
Old 06-29-2006, 08:33 PM   #2
scaleguy's Avatar
I am: JimmyD
Join Date: Nov 2002
Location: Mississauga On, SE Zone
Radio of choice:
JETI Duplex DS-16
# of RCs: 6

Feedback: 30 / 100%
Posts: 13,957
Total Props: 16

At the past two Scale Aerobatics / IMAC contests this year it has been a standing rule that if you have Failsafe available on your radio that you set it so the engine goes to a little above idle. This was done so that you would notice if you went into failsafe mode as the engine sound would change either if you were at idle or if you were going full bore.

The reasoning for only dealing with the throttle is that it was thought that not ALL hits causing a Rx to go to Failsafe will necessarily keep the Rx locked out. Most hits are momentary and may not be noticed so the reasoning was that it is not necessary to cause a drastic change in the flight every time a lockout occurs. With the engine retarded if the lockout continues then at least the engine will not be going full boar if/when the aircraft contacts the ground.

I know if I am landing and I get a momentary lockout I sure don't want to be doing a snap roll... it could end up be more dangerous to those on the ground then the aircraft just continuing to descend under minimal power.
Jim Daly
IMAC Sequence Committee Member
Your Friendly Neighborhood SouthEast Zone Director
MAAC #14323L IMAC #3678
scaleguy is offline   Quick reply to this message.
Old 06-29-2006, 08:43 PM   #3
RCC Pro Contributor
JimBrown's Avatar
I am: Jim Brown
Join Date: Mar 2003
Location: Rockland, Ont.
Radio of choice:
Jeti DS-16
# of RCs: 10

Feedback: 18 / 100%
Posts: 1,937
Total Props: 4

Agreed, which is way I put the proviso about my IPD receivers. If they have locked out, the signal is gone.

As I also mentioned, it is not perfect. I probably does not matter what kind of failsafe setting you use, there will always be the possibility of it not being the right setting for a specific scenario. The idea is to make it the right setting for as many scenarios as possible.

Consider this. At a recent jet meet, a turbine powered sport jet went into lock out during a high speed pass just as it was going by the pilot stations over the far side of the runway, at 25' altitude, straight and level. Everyone heard the engine quit (it makes a distictive sound.) That part of the failsafe worked. However, the rest of the failsafe settings saw the jet go into a slight climb and slight turn (in this case, away from the flight line, fortunatly.) It impacted the yellow line painted on the center of a local highway approximatly one kilometre away. The pilot never regained control. Again, fortunatly, there were no vehicles nearby at the time.

Food for thought.

JimBrown is offline   Quick reply to this message.
Old 06-29-2006, 09:42 PM   #4
RCC Supreme Contributor
nony's Avatar
Join Date: Sep 2002
Location: the Park, Ab.

Feedback: 0 / 0%
Posts: 4,339
Total Props: 0
That's a pretty good glide ratio !!!!

The sooner you fall behind, the more time you will have to catch up.
nony is offline   Quick reply to this message.
Closed Thread

Quick Reply

Register Now

In order to be able to post messages on the RCCanada - Canada Radio Controlled Hobby Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionally, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Your Name
Your first name and last initial is required if you plan on using the forum.
Which city & province you live in. This is mandatory for classified listings.
Radio of choice?
Which radio is your current favorite to use?
Number of RC Vehicles?
How many boats, cars, planes do you own?


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
vBulletin Message

Thread Tools
Display Modes

Forum Jump

All times are GMT -5. The time now is 09:04 AM.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.