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Old 05-18-2019, 10:14 PM   #21 (permalink)
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Quote:
Originally Posted by K-rash View Post
using frsky on large models should be avoided
Been using them for 5 years including a 700 gasser and a couple of 500s. Too many 450s to count. No more issues than ive had with other brands.
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Old 05-18-2019, 11:34 PM   #22 (permalink)
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same, a couple 700's on frsky, never an issue.
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Old 05-19-2019, 12:03 AM   #23 (permalink)
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Random failsafes are only a matter of when.... not if.
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Old 05-19-2019, 12:58 PM   #24 (permalink)
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Random failsafes are only a matter of when.... not if.
As with any RC transmitter receiver set up.

Flying RC is a crap shoot. You will lose something expensive sooner or later. If you really want to screw the pooch go with Futaba. Just saying. Nuff said.

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Old 05-19-2019, 06:07 PM   #25 (permalink)
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using frsky on large models should be avoided
I'm gonna go out on a limb and assume you've never flown a FrSky radio.

If the FPV guys are using FrSky to fly things that are not only way further away than a typical 3D heli flight, but often also out of line of sight, why in the world would it not work for a heli flying much closer in direct line of sight?
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Old 05-19-2019, 06:34 PM   #26 (permalink)
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I'm gonna go out on a limb and assume you've never flown a FrSky radio.

If the FPV guys are using FrSky to fly things that are not only way further away than a typical 3D heli flight, but often also out of line of sight, why in the world would it not work for a heli flying much closer in direct line of sight?
I didn't post this to start a debate with the fan boys..
Frsky released a fw update for x series receivers so they would reboot after they failsafed.. this helped with planes, but not quick enough for f bl controllers.. I have 1000's flights on 3 different frsky radios... 4 flights resulted in crashs/heavy landings due to rx failsafes... all on 600 size helicopters.. at one stage the opentx section of helifreak had 4 different posts on the front page with the same issue..

Edit... all my incidents were with in 20m of me.. if range is relevant, which it probably isn't, it is due to close proximate, not far..

Last edited by K-rash; 05-19-2019 at 06:57 PM..
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Old 05-19-2019, 07:02 PM   #27 (permalink)
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Seems like that problem has been resolved because there are more heli guys flying FrSky now than ever before

"I didn't post this to start a debate with the fan boys.. "

Posting what you did with no context or explanation? Yeah, seems like you were trying to start a debate.
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Old 05-19-2019, 08:51 PM   #28 (permalink)
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The only issues I've ever had are when I had poor antenna placement. And I always got low signal warnings so I could fix it. I've been on FrSky since I got my Taranis from the initial release waiting list. I fly it on everything from micros to my Protos Max. I've even used it on a Goblin 500 modified for speed. Never an issue that wan't my own fault.
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Old 05-20-2019, 04:28 PM   #29 (permalink)
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Quote:
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I didn't post this to start a debate with the fan boys..

Oh really? So you expect the rest of us to just take your word as gospel in the face of your own evidence which follows?

Frsky released a fw update for x series receivers so they would reboot after they failsafed.. this helped with planes, but not quick enough for f bl controllers.. I have 1000's flights on 3 different frsky radios... 4 flights resulted in crashs/heavy landings due to rx failsafes... all on 600 size helicopters.. at one stage the opentx section of helifreak had 4 different posts on the front page with the same issue..

Assuming thousands means multiple, we can safely arrive at a minimum of two thousands flights. Considering the average person might make it to the field twice a week and flyaybe 5-10 flights, that's 1.92 years of never missing the 20 flights a week mark. Hats off to you (if you're not exaggerating)

It also means that your failure rate is 0.2% maximum. Not really a shocking statistic. Matter of fact, if I had that kind of luck with any RC set up, I'd be bragging about how amazingly reliable it is.

Futaba has a 100% failure record for every craft I have put it in, just for comparison.


Edit... all my incidents were with in 20m of me.. if range is relevant, which it probably isn't, it is due to close proximate, not far..


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Old 09-13-2019, 09:50 AM   #30 (permalink)
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Well, I (eventually) have the model rebuilt and ground-tested. I installed a RX4R, not bothering with the redundant receiver option (as the connection to the first receiver is probably more of an issue than signal loss). I am using the pico output connector soldered to a servo lead connecting to the Spirit for the SBus.


I spooled up the model in the garden with no blades on, and ran it for 6 minutes. All looked fine until I spooled down, at which point two weird things happened: (1) all ESC telemetry ceased (presumably the notorious HW firmware bug), and (2) the reported RSSI got bad (around 60 from 2 meters away, where previously it was over 80).


Any idea why the RSSI reduced?
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Old 09-13-2019, 11:05 AM   #31 (permalink)
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If you get too close with the transmitter then apparently it can swamp the receiver and cause signal degradation - not just FrSky but anyone. I have certainly had the situation when binding my old Spektrum Tx to Spektrum Rxs that if you tried it with them next to each other it wouldn't work, but if you took the Tx a few feet away it bound no problem.
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Old 09-13-2019, 05:41 PM   #32 (permalink)
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Yes, if they are very close you will lose telemetry. It's normal.
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Old 09-17-2019, 08:29 AM   #33 (permalink)
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Turns out there may be a different explanation — one of the mini coax connectors came off the RX4R (perhaps due to vibrations?), leaving only one antenna.


These antennas are supposed to be glued. Really doesn't give me much confidence that these little RXs are up to the job.
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Old 09-17-2019, 05:06 PM   #34 (permalink)
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Never had an antenna come off unless I pulled too hard on it. They are glued from the factory, unless the RX4R is different. I've been flying with FrSky for 3 years or so, the receivers definitely seem up to the task in my opinion.
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Old 09-19-2019, 10:44 AM   #35 (permalink)
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It was glued, but only with a tiny blob.
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Old 09-19-2019, 11:04 AM   #36 (permalink)
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I use some clear shrink wrap around my R-XSRs - it holds the antennae on, protects the board and gives a good base for the 3M tape that I use to mount them.

My only doubt was whether or not it would cause the voltage convertor to overheat - but I've not had any issues...
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Old 09-19-2019, 11:29 AM   #37 (permalink)
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I use several X8R's and D4R-II's on various models. An X8R is in my Trex 470. Will be trying a small X series next time I buy an Rx or two.
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Old 09-19-2019, 12:00 PM   #38 (permalink)
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I have the R-XSR in my 470L. Works a treat.
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Old 09-19-2019, 12:12 PM   #39 (permalink)
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Quote:
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I have the R-XSR in my 470L. Works a treat.
Off topic but....Diggin' your printed custom parts. I love my printer. Saved my butt last night. My cars brake lights came on permanently yesterday. Found a little button/bumper that went between brake pedal and brake switch that had disintegrated, thus not triggering the switch. 20 minutes to design and print...boom....fixed.
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Old 09-19-2019, 12:23 PM   #40 (permalink)
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Quote:
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Off topic but....Diggin' your printed custom parts. I love my printer. Saved my butt last night. My cars brake lights came on permanently yesterday. Found a little button/bumper that went between brake pedal and brake switch that had disintegrated, thus not triggering the switch. 20 minutes to design and print...boom....fixed.
I didn't have a printer, so I fixed the same problem on my son's car with a rubber stopper from the hardware store.

Back on topic...

I use X8R receivers in glow helis, RX8R Pro with XM+ receivers in gas helis, X4R-SB in 450's and an RX8R and XM+ in a 700 electric scaler.
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