Servo Questions (failsafe etc)
#1
Hi Gary,
I'm thinking of taking the plunge... actually I have a 5925 steering my 1/8 on road right now and so far so good (thats a big plunge.) I like the local support you folks have... I hate waiting for gears/repairs etc... and I also like how low the curent draw is on your digital servos... I'm not sure why yours are lower than analog and everyone elses eat my batteries like crazy - but its a good thing
Couple of questions:
How does the failsafe work... i.e. at what voltage does it go active? Does it activate if there is RF interference too? I noticed with a XXTra that when I get RF (i.e. someone on my channel) it just glitches out (servos go nuts) - does this still happen with a Digital servo? Does the new CRX have any RF protection (i.e. similar to the way PCM shuts down when there is a bad signal?)
If an external failsafe is needed for the CRX are there any that are not compatible?
In the case of a battery failure (broken wire) is there some capacitance in the servo that allows it to return to failsafe - or am I still relying on my TRS to pull the servo back. I know it's not a huge issue because these servos are easy enough to return - just curious.
Do you have a programmer I can "borrow" next time we're at the same race? If I take the plunge it would be nice to be able to program the servos for each car.
Thanks,
Chris Hammond.
I'm thinking of taking the plunge... actually I have a 5925 steering my 1/8 on road right now and so far so good (thats a big plunge.) I like the local support you folks have... I hate waiting for gears/repairs etc... and I also like how low the curent draw is on your digital servos... I'm not sure why yours are lower than analog and everyone elses eat my batteries like crazy - but its a good thing

Couple of questions:
How does the failsafe work... i.e. at what voltage does it go active? Does it activate if there is RF interference too? I noticed with a XXTra that when I get RF (i.e. someone on my channel) it just glitches out (servos go nuts) - does this still happen with a Digital servo? Does the new CRX have any RF protection (i.e. similar to the way PCM shuts down when there is a bad signal?)
If an external failsafe is needed for the CRX are there any that are not compatible?
In the case of a battery failure (broken wire) is there some capacitance in the servo that allows it to return to failsafe - or am I still relying on my TRS to pull the servo back. I know it's not a huge issue because these servos are easy enough to return - just curious.
Do you have a programmer I can "borrow" next time we're at the same race? If I take the plunge it would be nice to be able to program the servos for each car.
Thanks,
Chris Hammond.
#2
If you lose voltage, the servo would have no power to go into FAILSAFE mode. (return spring)
There are several Failsafes on the market.....
However, I have seen several threads on issues with them....
Not just with Hitec product....
Maybe do a search in this forum and others to find the threads..
The CRX is FM, the PCM failsafe is a feature of the Rx.
Hitec’s new HIS-03MK single conversion receiver is the first to use IPD (Intelligent Pulse Decoding) technology.
This receiver is an exciting new addition to their populare surface-line receiver products. Preset throttle option for signal loss.
The IPD circuit provides "Intelligent Pulse Decoding" to filter out unwanted signals and assures crystal clear, glitch free reception. It will also act in the same way that the aftermarket fail safe units do and protects against runaways from loss of signal or massive interferance.
Sure, you can use my HFP-10 anytime....
Just come over and ask....
Tre's
www.tresleonard.com
There are several Failsafes on the market.....
However, I have seen several threads on issues with them....
Not just with Hitec product....
Maybe do a search in this forum and others to find the threads..
The CRX is FM, the PCM failsafe is a feature of the Rx.
Hitec’s new HIS-03MK single conversion receiver is the first to use IPD (Intelligent Pulse Decoding) technology.
This receiver is an exciting new addition to their populare surface-line receiver products. Preset throttle option for signal loss.
The IPD circuit provides "Intelligent Pulse Decoding" to filter out unwanted signals and assures crystal clear, glitch free reception. It will also act in the same way that the aftermarket fail safe units do and protects against runaways from loss of signal or massive interferance.
Sure, you can use my HFP-10 anytime....
Just come over and ask....
Tre's
www.tresleonard.com
#3
Company Representative
iTrader: (1)
Joined: Aug 2001
Posts: 1,645
From: Calgary, Alberta, Canada
Chris, I have my programmer with me all the time. Do you want me to bring it up to your race in nov?
The failsafe on the servos work on a loss of radio signal or interference. I am not sure how the servo will react with the xtra, since I use only the DCX. When the DCX has a hit on it, the car just stops and everything goes to neutral. I'll show you in Edmonton, I'll just turn the car on on the table with out the radio. It just sits there, doesn't go nuts or anything. I can spot you some gear to try for a bit if you like. Just a warning tho, you may never be able to go back to the dark side, LOL.
Gary
The failsafe on the servos work on a loss of radio signal or interference. I am not sure how the servo will react with the xtra, since I use only the DCX. When the DCX has a hit on it, the car just stops and everything goes to neutral. I'll show you in Edmonton, I'll just turn the car on on the table with out the radio. It just sits there, doesn't go nuts or anything. I can spot you some gear to try for a bit if you like. Just a warning tho, you may never be able to go back to the dark side, LOL.
Gary




