Spektrum and Low Voltage Fail-Safe

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Just a heads up on what to do for a low voltage failsafe. Off the Spektrum site:

Will a Low Voltage Fail-Safe work with Spektrum Receivers? - 12/28/2007 9:57:02 AM

Spektrum surface radios include a signal loss failsafe, but do not have a voltage failsafe. You can use the http://www.horizonhobby.com/Products/Default.aspx?ProdID=DYN2553 to build in a voltage failsafe. The Race Guard will kick in when the voltage drops below 4.0 volts.
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the one issue i have about their statement is it is directed towards the nitro guys as they run smaller packs with rated at 4.8 v. our Large scales typically run on a 6v system. so you ll want to get a voltage failsafe that is adjustable as you only want the RX pack voltage to drop to about 5.8 volts with 5.6v being about the absolute bottom voltage.
 
Ahhh. Good call, didn't think of that. Dang it I want to find that failsafe in the other thread it seems the only fit. Anyone know of a low voltage FS that works with a 6V system?
 
That sucks, I thought that would be part of the reciever, thanks for the heads up on the low voltage thing.

I suppose I will be running a fail safe ontop of the DX3R loss of signal fail safe.

Why I wonder would they build in a loss of signal failsafe and not incorporate a low voltage failsafe?
 
i think venom makes one that is adjustable.

in the UK, a company called Mtroniks also makes one.
 
I think I looked at the Venom voltage monitor but the one on their site just gives the voltage, with no failsafe, if I am not mistaken.

BtB, the one you suggested should in theory work since the working voltage of the DX 3.0 receiver is "3.2-9.6 v".

I originally thought that there was a low voltage monitor, but now I realize all it does is flash, lol. Hmm...
 
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Why I wonder would they build in a loss of signal failsafe and not incorporate a low voltage failsafe?
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That is the question!:glare: And why the heck would they not start changing it over to have one or make a separate in line one and just say there receivers are set up for so many different models and voltages that they needed to make a separate one for your type of situation.

I run a voltwatch to see my battery get low but it would be nice to have something to shut it down in the case I look and it drops from use after a few minutes.:(
 
Heh, this reminds me of my ongoing desire to build an online generator, which would in theory end all low voltage problems forever. :)
 
spektrum gear no good imo

i recently had a thunder tiger truggy destroyed because i beleived spektrum had low voltage cut off with fail safe. it doesn't, and it bent my truggy like a pretzel. im not butin the stuff anymore, swithced to futaba, try that. at least futaba have a history with radio gear. apart form the new technology spektrum brought, and i may be wrong they werent a radio manufacture beforhand, if that makes sense.
 
hi, i ended up buying the 3pks with the 2. 4 ss module an reciever combo. wasnt the latest stuff, but it was on offer! i just thought if spektrum doesn't clearly state the lack of cutoff, then it quite misleadin.
 
I believe they seem to do the same thing, although I'm not sure if the TGN one also kills the engine when the rx batt pack goes dead, ie. is the relay is normally closed or open? In the Diemaster kill switch, the relay is modded to be closed when not powered so the engine is by default 'off'.

Maybe someone who has one can clear this up?
 
you pretty much have it right Fabe.

the TNGs are petty much the same as the CBE unit out last yr, so don't cover loss of rx power as they are normally open. Im should email Gussy and see if there is a way to make the relay normally closed on it.
i ll post up what i find out.
T
 
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