No problem.

Based on your detailed description of events and what appeared to work pointed to the DR being active. It's all good.

Has anyone tried the telemetry options?

I can't afford Futaba Telemetry options.

The inherited RX Voltage telemetry data point provided by the R304SB receiver in nitro powered rigs is pretty sweet for the cost vs. value added even if no other data points are monitored.

If powering the RX on an electric rig, this included feature may not be super informative as it will most likely show 6.0 or 7.4VDC output from the ESC/BEC, not the more important voltage state of the lipo power source without purchasing additional telemetry components.

Anyone?

I'm curious too. Ran mine for the first time this weekend and had one glitch. I got to the end of the front straight and lost the car for about 2 seconds (nitro). It went into fail safe I assume. I didn't have any other issues with it. I was running 3 classes so I had a lot of run time. Still using the original software, no update. I'm going to be pissed if this continues. I have had a Futaba 4P? since they came out and have been a loyal customer. I will say I REALLY like this radio. Hoping my glitch was a fluke.

I have not experienced this symptom on my Nitro Truggy, Buggy or Tekin powered Electric Buggy.

In fact, as I havecstated a few times previously, I have had no clutching or any range issues.

Are you using Savox by any chance? Have you tried a Glitch Buster (Cap) as a test? I'm not implying a GB is required, just suggesting it as a test at this point.

What Are you using for a TX battery? Was it fully charged? Did you properly configure the TX for the battery type and low voltage notification point for the battery being used?

In another test, with the car sitting still, begin steering the car from hard left to hard right. Do you notice the RX battery voltAge dropping significantly? If so, maybe an external BEC is required if the ESC's BEC isn't providing enough current for the requirements of the steering servo being used.

Lastly, have you configured the ESC for the correct output voltage for the servo and RX? Maybe the servo only supports 6.0VDC for example.

Additional question for you guys - are you repositioning the Antenna mounted on the front of the 4PX? Not to get too long winded here, but the signal coverage will be more beneficial for side to side range if the antenna is rotated. In the default flat position, the antenna is better suited for frontal range - likely not the best for our surface hobby unless the driver's stand was 75ft off the ground which would better allow the signal to track all corners of the track.

Can either of you describe the location of the problem areas in relationship to where you are standing when the issue happened? In front of you, distance? Or in a corner to the right or left and distance?

As a test drive your car to various locations of the track, then look at your display and see how strong the Telemetry signal is from the car in the various areas. If you see a weak area, rotTe the antenna and wait screw seconds... Did this change the signal strength reported? This might help you identify weak spots at your track.

Of course, I'd expect the output signal of the 4PX to be stronger than the output of the R304SB.. But this just might point to some problem areas for whatever the reason.

I didn't think about the antenna rotation. Left it "parked" all day. I'm going to practice today and I'll do a little experimenting.

My glitch happened to the extreme left of me about 50'. Not a long distance by any stretch but definitely the most extreme as far as side to side. I'll try turning my body away to make it even more extreme and see if I can make it happen and keep an eye on the signal also. I won't have my nitro with me which is the car it happened to. I'm running a life battery in it and it was just fully charged before that main which was 30 minutes. It happened on about the 3rd lap. It is a hard brake since its the end of the front straight but it didn't happen again which goes against voltage level issue. I do know, anything is possible though.

edit; Running KO responses in analog mode.

OK I'm a liar. The receiver was set to Digital on my nitro. I was also driving two other electric classes and they are both set to analog. I must have forgot to set this model up for analog when I was setting everything up. Very well could have been my problem. Glad I went back to check to confirm.

It might be best to think of the RF signals transmitted from the 4PX radio as follows:

Default "parked" orientation of antenna will look similar to the following illustration:

http://www.rctech.net/forum/attachme...edposition.jpg

Rotated orientation of the antenna will look similar to the following illustration:

http://www.rctech.net/forum/attachme...edposition.jpg

So, think of it as if you placed donuts on the antenna shaft, the donuts represent the direction of the RF radiation from the antenna. For surface radio control, we generally want the antenna shaft perpendicular to the ground which allows the "donuts" to radiate more evenly in the surrounding areas of the track. The default orientation would be great if you continually rotate/twist your arms and body always pointing the 4PX towards the car on the track.

Maybe this is the reason Futaba provided the swivel antenna.

If your servos support "Digital", digital is the correct mode and will provide fastest response times. Analog mode is however OK when using digital capable servos.

If they are "Analog", then analog mode is required as digital mode will likely burn the analog type servos up within a short period of time.

Finally somone speaking my language.... DONUTS!!!

Good post. Makes sense. I have not had any problems and I've never rotated the antenna. Not a bad tip though for somone who has seen an issue.

Thanks for your reply. I am using an XP 1015 servo with an LRP flow esc. The lrp bec output voltage is unadjustable, it remains at a constant 6v.
Using a Life battery, was indicating 6.4v.
When I steer left and right voltages remain constant.
Antenna was rotated when I got the glitch.

The first glitch was slightly to my left at 15 meters, the second glitch was straight infront of me at about 10m.

I am going to get the update ready on an SD card. At the next race meet, if I experience another glitch, I'll do the update there and then and hopefully it fixes it.

I'm curious to know if the update has fixed this issue for anyone else.

My servos are digital. 4PX manual says unless your running s-bus servos, choose analog. I ran all day today with out a single issue. I'm going to say my incident was isolated. I used the antenna in both positions and it didn't seem to make a difference. Signal still showed full bars. I even tried turning sideways and it didn't affect it either way. I do have to say, I love this radio. Its so choice.