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Old 04-18-2008, 12:20 PM   #1
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Default Anyone know much about an OFNA failsafe?

Ive had it set up for a few months now and took the time yesterday to try and fiddle with it.

The way it works is when the connection gets lost, or the remote turns off, the failsafe is supposed to apply the brakes.

Thats where my problem is, Im sure I have it set up, and while I was testing it, I noticed it only applies the brakes for about a second, if that.

I was wondering if there was anything I could do different so that when I lost signal or something, it applied the brakes for about 10 seconds (until fully stopped), not just a quick blip on the brake then let it coast to a stop.

Thanks
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Old 04-18-2008, 02:02 PM   #2
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I don't know much about that failsafe but I think that you can choose the "home" position of the servo. That said, I would leave it the way it is. The failsafe's primary function is to move the servo to neutral if something interrupts the radio's signal or power. If you get a glitch and the failsafe kicks in it might take you a little while to figure it out. In that time you would be at risk of cooking a throttle servo if it were stalled under load for too long. It's better for the servo if the failsafe just sets it to neutral. The car will stop on it's own quickly enough.
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Old 04-18-2008, 02:29 PM   #3
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Quote:
Originally Posted by Davidka View Post
I don't know much about that failsafe but I think that you can choose the "home" position of the servo. That said, I would leave it the way it is. The failsafe's primary function is to move the servo to neutral if something interrupts the radio's signal or power. If you get a glitch and the failsafe kicks in it might take you a little while to figure it out. In that time you would be at risk of cooking a throttle servo if it were stalled under load for too long. It's better for the servo if the failsafe just sets it to neutral. The car will stop on it's own quickly enough.
the way its set up now is when a glitch happens, it puts MAX brake on for about .75 seconds... i kinda wish it would hold the brake for a good 3 or 4 seconds until i know the car is completely stopped, but youre right, thats good enough and im sure thats why they made it like that.

I read the manual and did everything it said, but I was still kinda scared I did something wrong and thats why it wasnt performing like I wanted it to.

thanks.
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Old 04-19-2008, 07:52 AM   #4
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Default Failsafe

Its a good thing. But remember to keep fresh batterys in the recever. They go down fast.
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Old 04-20-2008, 12:10 AM   #5
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hahahahahaha HI corey.
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Old 04-20-2008, 06:15 AM   #6
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The best thing that you can do is to install a throddle return
spring on the motor. A failsafe only works if it has power from
the battery going to it. I have seen more runaways caused by
loss of battery power than radio glitches. If you use both, then
you will be covered both ways.
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Old 04-20-2008, 02:34 PM   #7
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Quote:
Originally Posted by rageworks View Post
The best thing that you can do is to install a throddle return
spring on the motor. A failsafe only works if it has power from
the battery going to it. I have seen more runaways caused by
loss of battery power than radio glitches. If you use both, then
you will be covered both ways.
I believe I have one of these, I actually think ive put two of them on for more tension. Are those springs that go onto the metal rod that connects the carb and the throttle servo?

And I agree with you on the runways caused by batteries not radio glitches, I was thinking about that the other day, the failsafes are kind of useless if they dont have power going to them, which seems to be my problem. They should store like 10 seconds worth of power inside of them just in case the battery goes off, the failsafe stops the throttle, then it runs outta juice and dies. Only makes sense...
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