4LikesFutaba 4PM random signal loss
04-04-2022, 07:36 AM
#31
One of the main problems for signal lost, especially when you start steering, is that modern high speed high voltage servos are drawing a lot of current from your receivers. Futaba receivers seem to be quite sensitive to it, even if you have options of high BEC voltage/current from your ESC. One way to rectify the problem is that add a servo capacitor or what people call the glitch busters to your receiver. It is not because your Futaba radio/receivers are faulty, it's just your servo. Your can try to buy a servo capacitor for a few dollars to see if it gets rid of your shut down problem.
That wasnt the case for me, my previous Futaba transmitter used the exact same receivers (reason I went for the 4PM tbh). It never glitched once on the old transmitter, I even fitted the receiver that came with the 4PM (same model) and that cut out too. I've since gone back to my original transmitter and its never cut out since.
04-04-2022, 09:38 AM
#32
I run a 4PM and ran into some pretty insane “glitches” (for lack of a better word) on my second qualifier for a trophy race last Saturday. It was fine then I noticed my car wasn’t as responsive and then multiple times on the following lap it just drove dead straight into walls and would get stuck steering dead left, that type of thing. I’ve had this happen before but it’s been a few months since it’s last happened.
I’m not sure if anyone has tried this, but people in the pits recommended I try swapping out my sensor wire, as well as running the wire around my battery instead of under the battery in the channel. I also put in new batteries for my transmitted.
The issue didn’t come back for Q3 or my mains so hopefully this did the trick.
I’m not sure if anyone has tried this, but people in the pits recommended I try swapping out my sensor wire, as well as running the wire around my battery instead of under the battery in the channel. I also put in new batteries for my transmitted.
The issue didn’t come back for Q3 or my mains so hopefully this did the trick.
04-04-2022, 09:55 AM
#33
Tech Initiate
I run a 4PM and ran into some pretty insane “glitches” (for lack of a better word) on my second qualifier for a trophy race last Saturday. It was fine then I noticed my car wasn’t as responsive and then multiple times on the following lap it just drove dead straight into walls and would get stuck steering dead left, that type of thing. I’ve had this happen before but it’s been a few months since it’s last happened.
I’m not sure if anyone has tried this, but people in the pits recommended I try swapping out my sensor wire, as well as running the wire around my battery instead of under the battery in the channel. I also put in new batteries for my transmitted.
The issue didn’t come back for Q3 or my mains so hopefully this did the trick.
I’m not sure if anyone has tried this, but people in the pits recommended I try swapping out my sensor wire, as well as running the wire around my battery instead of under the battery in the channel. I also put in new batteries for my transmitted.
The issue didn’t come back for Q3 or my mains so hopefully this did the trick.
04-04-2022, 01:23 PM
#34
Really? I'm running a R334SBS that's maybe 3 months old.
04-04-2022, 02:56 PM
#35
Tech Initiate
The R334SBS maybe different as its the super high response, I was using the kit R334SB.
04-06-2022, 05:57 AM
#37
Tech Initiate
I am using mainly 2x R334SBS and a couple of S-FHSS R202GF and no problem in glitching, maybe I am lucky. I am also trying one CORONA C4SF-HV third party receiver to see.
Looks like that Futaba has some QC problem.
Looks like that Futaba has some QC problem.
04-16-2022, 02:05 PM
#38
4PM Life Battery Voltage
I have a 4PM that I just got a Muchmore 2300mah Life battery for. I charged it up on my Turnigy charger, set to Life mode @ 6.6v. When it was done charging... i put it in my TX... and it fired right up. However... my 4PM showed it as operating at 6.9v. This is my first Life battery, and I didn't know what to do...so I immediately turned off my TX to be safe. Is this normal for a Life battery? Is it bad for my battery or TX? Is there a setting on the 4pm I need to change to make the Life battery operate at a different voltage? My charger shows the battery @ 3.6v per cell which is also wierd to me. I double checked and I definitely DID correctly set it @ 6.6v so....
04-18-2022, 01:53 AM
#39
Tech Rookie
There is firmware update to 4pm. The latest is 5.03 with one improvement to radio communication enhancement.
Besides 4pm, Futaba also updated R334SB/R334SBS-E with 5.0 version.
The improvement is also a more stable radio communication.
Hope both firmware update helps.
Besides 4pm, Futaba also updated R334SB/R334SBS-E with 5.0 version.
The improvement is also a more stable radio communication.
Hope both firmware update helps.
04-18-2022, 01:58 PM
#40
Tech Rookie
There is firmware update to 4pm. The latest is 5.03 with one improvement to radio communication enhancement.
Besides 4pm, Futaba also updated R334SB/R334SBS-E with 5.0 version.
The improvement is also a more stable radio communication.
Hope both firmware update helps.
Besides 4pm, Futaba also updated R334SB/R334SBS-E with 5.0 version.
The improvement is also a more stable radio communication.
Hope both firmware update helps.
04-19-2022, 11:28 PM
#41
Tech Rookie
No, you need a 7PX or a USB dongle to update rx from a PC.
I borrowed a 7pxr from a friend to update my rx.
I borrowed a 7pxr from a friend to update my rx.
04-21-2022, 06:46 PM
#42
Fully charged Life battery will be 7.2v +/- .1v depending on the terminal voltage the charger uses for Life. What you saw is normal. 6.6v on a 2s Life battery is nominal voltage (ie voltage when half full).
Did you change the battery type on the transmitter to Life?
Did you change the battery type on the transmitter to Life?
04-24-2022, 08:43 AM
#43
Futaba 4pm
04-24-2022, 06:27 PM
#44
Tech Rookie
look on Page 74 in Futaba manual, simple walk through. Get yourself a 32gb sd micro card. Download the 4pm zip file on to your computer to the sd card insert the sd card into the transmitter hold down END and turn on the POWER and it will automatically install update. I did the software update but haven’t tested the transmitter yet, hope this helps
Of course, it's definitely worthy a try to upgrade 4pm first and see how it works.
If not acceptable with 334 series rx, my advise is to ask a help from your club friend who has a 7px or 7pxr.
They could save the 334 rx firmware in the SD card and connect transmitter with 334 series rx via the futaba wire. In the setting menu of 7px/7pxr, you will find an option to upgrade rx firmware. Hope this helps.
p.s. i upgrade both my 4pm and r334sbs-e right out of the box. Therefore I don't have the chance to compare the signal performance before and after. Never experienced a lost signal with latest firmware.
08-04-2022, 04:00 AM
#45
Tech Rookie
I had lots of problems with signal drop out with my T4PM when I got it. Upgrading the firmware to 5.03 fixed it. I've been using the transmitter for a few months since upgrading and haven't had a single problem since. Before that I was getting at least a couple of drop outs every meeting.