DX4R Pro
#556
Tech Adept
iTrader: (11)
Joined: May 2013
Posts: 104
Myself, like many of you don't like the low battery life of the 4R Pro so I looked into modding it to accept a 2s lipo and I was gonna run it through a CC 10amp BEC to bring the voltage down to around 6.5 volts or so. There's plenty of room for a small 3000mah pack and the BEC but the problem is that Spektrum in their infinite wisdom made it so you need the battery tray to hold the cover on.
I wanted to make sure I could buy a new battery tray in case I screwed it up trying to modify it so I could put a lipo in it and still have the tray in to hold the door on so I contacted Spektrum and they said I would have to send my radio in to get the tray replaced as it's not for sale to the public so that's not good.
So now I'm thinkin' of buying either the NiZN's like many of you have done or going the high capacity LiFe 14500 route and add the missing links from another battery tray and solder some jumpers to make it a 2S3P setup as long as I can do it and keep the battery door on tight.
The 4S I had before the 4R had a lipo in it. I was hoping it was something they would continue with the 4 series of radios. Never try to guess manufacturers line of thinking, it'll backfire. lol
I wanted to make sure I could buy a new battery tray in case I screwed it up trying to modify it so I could put a lipo in it and still have the tray in to hold the door on so I contacted Spektrum and they said I would have to send my radio in to get the tray replaced as it's not for sale to the public so that's not good.
So now I'm thinkin' of buying either the NiZN's like many of you have done or going the high capacity LiFe 14500 route and add the missing links from another battery tray and solder some jumpers to make it a 2S3P setup as long as I can do it and keep the battery door on tight.
The 4S I had before the 4R had a lipo in it. I was hoping it was something they would continue with the 4 series of radios. Never try to guess manufacturers line of thinking, it'll backfire. lol
#559
Tech Addict
iTrader: (13)
Joined: Mar 2007
Posts: 507
From: colorado springs, co
With that being said, I have stopped using them. One day, when I put my radio away, I either left it on or accidently turned it on. Anyway, a few days later when I discovered it, I took the batteries out and they would not accept a charge.
I have not bought any replacements because If I accidentally leave my radio on, again, I don't want to throw more "good" cells away.
I have been using regular alkaline batteries and have not had any problems, so that is what I am going to stick with.
tim
#561
Tech Initiate
iTrader: (5)
Joined: Jul 2011
Posts: 44
rms, how tight is your battery door? Looked at doing something similar (gonna use a CC 10amp bec myself) and thought about using a 3s. Thinking that with higher voltage a 1800mah or so pack will last a long time.
Did you take the whole tray out and stuff sides with dense foam or did you cut the tray?
Replacement trays are available to public so I was hesitant on carving up my battery tray.
Looks good.
I have a couple of old SMC 1s 4200 packs from pan car days that are 1s2p that I made into a 3s that would fit (with CC bec) if I removed the tray itself.
Did you take the whole tray out and stuff sides with dense foam or did you cut the tray?
Replacement trays are available to public so I was hesitant on carving up my battery tray.
Looks good.
I have a couple of old SMC 1s 4200 packs from pan car days that are 1s2p that I made into a 3s that would fit (with CC bec) if I removed the tray itself.
#562
Tech Initiate
Joined: Feb 2013
Posts: 38
rms, how tight is your battery door? Looked at doing something similar (gonna use a CC 10amp bec myself) and thought about using a 3s. Thinking that with higher voltage a 1800mah or so pack will last a long time.
Did you take the whole tray out and stuff sides with dense foam or did you cut the tray?
Replacement trays are available to public so I was hesitant on carving up my battery tray.
Looks good.
I have a couple of old SMC 1s 4200 packs from pan car days that are 1s2p that I made into a 3s that would fit (with CC bec) if I removed the tray itself.
Did you take the whole tray out and stuff sides with dense foam or did you cut the tray?
Replacement trays are available to public so I was hesitant on carving up my battery tray.
Looks good.
I have a couple of old SMC 1s 4200 packs from pan car days that are 1s2p that I made into a 3s that would fit (with CC bec) if I removed the tray itself.
#563
Tech Fanatic
iTrader: (1)
Joined: Mar 2015
Posts: 794
I know this is old thread but I just called horizon to order a spring. ..and they said I had to send my radio in to get it repaired ..they will not send you parts for your radio because its a liability issue.I say bs to that its a money issue. ..looks like I'm going to the hardware store...Ace Hardware number 71 Spring might have to cut it down some but it seems to have the same tension and its the same size up yours Horizon $0.89 fix
Last edited by rannblod; 05-23-2015 at 03:53 PM. Reason: to edit
#564
I have not had a single issue with the NIZN batteries. Even lipo will die if run down. I am still seeing way over 6 volts after two days of racing. I swap my packs out when charging, as I am using two packs. I guess that lets the batteries last longer. I would like to see 1.8 volt batteries!
#565
I have not had a single issue with the NIZN batteries. Even lipo will die if run down. I am still seeing way over 6 volts after two days of racing. I swap my packs out when charging, as I am using two packs. I guess that lets the batteries last longer. I would like to see 1.8 volt batteries!
#566
Therer are two types on Ebay right now. I bought the more expensive yellow and green ones. No problems.
#570
Tech Rookie
Joined: Jun 2014
Posts: 8
Has anyone any idea of how to set up an aux channel for on off switch on the DX4r Pro?
My trusty DX3 s was simple and I have been using it for all my large scale stuff (all fitted with Killer Bee Kill switches)
But at the moment, i am at a loss on how to set up the on off switch on the DX4r Pro.
Any help would be appreciated
My trusty DX3 s was simple and I have been using it for all my large scale stuff (all fitted with Killer Bee Kill switches)
But at the moment, i am at a loss on how to set up the on off switch on the DX4r Pro.
Any help would be appreciated



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want something that is left handed.