Problems!! 14MZ 2.4 R6014FS

[rcflyer]

Considering that the 6014FS is flown in larger planes, this is certainly a much higher risk to public safety. I think Futaba should make at least some acknowledgement of the issue, and make a recall before any ugly incident occur.

[Judge]

I think maybe Futaba needs to confirm that this is actually an issue, determine a cause, and engineer a solution before they start thinking about recalls.

Once they confirm it, then a service advisory would be in order.

[rcflyer]

The problem could be affecting certain manufacturing batches only from what I can see here. Maybe not.

[Sukhoikid]

I know I have a purple airframe and after landing the other day the plane was very warm inside. No problems. Yes I am using a 7 channel rx but have had no problems so far. I believe I feel more in connected with the plane more with the FASST than the G3 RXs. I just like FASST because it is simple!!!

[gregorycstitt]

I like the way these Futaba guys are thinking. Lets make sure there is a problem before we do anything about it. Kinda like lets just launch the shuttle even though there is an O ring failure. It should be okay. Everyone has talked about this all day long. Maybe the least Futaba should do is post a warning on their website that there might be a problem so anyone who is using these 6014 receivers is at least aware of the incidents that have occured. If someone gets hurt because of a faulty receiver that hurts everyone in our hobby. And it is a hobby. Maybe a recall isn't in order but there should be a warning on their website. Or hell, lets just launch and hope the O ring doesn't hit anyone. Im personally switching to a Hobby Lobby with 10 match boxes.

[calt]

The battery voltage might be playing a role in this also. the electronics inside the receiver run on 3 or 3.3v that is being supplied by an internal voltage reg. the higher the input voltage the more heat that will be generated by the internal regulator. A123 paks would cause more self-heating than li-ion with a 5.9 or 6v reg. most regulators have over load and over temp protection built in and will shut off when they go over temp and/or are overloaded.

[1bwana1]

I agree with calt, we must look at the entire electrical system in order to determine what the true issue is. I think it would be useful for those that are reporting problems to post their setup in detail. Those that are not experiencing can post theirs also. We may see a pattern from this information.

If it turns out that the receivers internal regulators are experiencing thermal shutdown when powered by too much voltage in warm weather, it will become as simple as the Spektrum problem with low voltage reboots. We will learn how to properly set up a plane that uses the FAAST system to avoid problems. That is the real value to the RC community that this forum is capable of contributing.

[dubd]

Steve,

But we shouldn't talk about it any more until Futaba tells us there is a problem, resolves it, and sends out a service bulletin.
SHHHHHHHH

[Judge]

True. Why wait for any pesky facts or verification. The Internet Jury has pronounced its verdict so let's grab the torches and head to the Castle yelling "Kill the Monster"!!!

[Mithrandir]

OK... if there is a voltage regulator.. I can see it gets a little warm....

I did once entirely forget a Regulator and flew one of the 14 channel 2.4 ghz FASST Rx's on 8.2 volts direct... in a plane with 9 servos and 4 ESC's... about a dozen flights... without difficulty...
(I have heard the Rx's will run on up to 20 volts... but you didn't hear that from me!!! )

I think that if the issue has merit, then FUTABA Should (And will) post necessary information... but they can't issue a bulliton EVERY Time someone thinks they have a problem....
There are 72,412 Radio Control Topic Websites with Forums in the US alone... there is all kinds of info, both good and bad... rather truthful and "Mistaken" that can and does get related on these forums...

The over heat does sound like it has merit... but that opinion is based on a few other pilots experiance..... Not my experiance... It is in the Best interest of FUTABA to investigate this and make it right and I am sure they will....

Let me tell you all a true story.....

Back in 1974, (Before the Lemon Law)...there was a family that bought a brand new Chrysler LeBarron. They loved their new car....
Every nite after dinner, ... it was their habit to drive to the local Krogers Grocery and buy a half gallon of ice cream and take it home and have a little party with the kids before bed time.... well... occasionally.. the car would not restart after they came out of the store with their ice cream... and this went on for months.... only occasionally.... and then... one of them noticed that this only happened when they bought Vanilla Ice cream.... yeah... no kidding... only when they bought vanilla Ice Cream!!!

So.. Chrysler Le Barrons would not start if you bought Vanilla Ice Cream!!!!





Well.. some investigation revealed what was happening.... can you guess????







It turns out... that the store kept the Vanilla Ice Cream in Freezers by the Cash registers... so when they purchased the vanilla... they didn't have to walk to the back of the store and then return to the front to pay... they simply grabbed the Vanilla, walked 30 feet to the cash register and paid... and then returned to their car which would not start.....

Had they chosen Rocky Road, Butter toffee nuget crunch or Chunky Cherry Squirrel Sherbet, they would have had to walk to the main freezers at the back of the store and then walk back to the registers at the front of the store thus taking about 6 minutes longer....

THAT WAS THE KEY!!!


It wasn't the vanilla ice cream, it was the difference in time.... apparently the Carb did a vapor lock thingy, and the extra time used to get flavors other then vanilla gave the car enuff time to resolve this condition....

So my point is...

I forgot...


well.. OK.. I remember....

listen to the experiance shared here... try to take measures to keep suitable air going over the Rx to NOT get that hot, but the sky is not falling!

Exercise Caution... but don't panic!

I truly hope no one else has this issue...

[3dubya]

I got lipos in my plane, if they got as hot as numbers im reading where fasst may fail id be more worried about them catching fire all the fasst will do is log off and crash the lipo fire ball for me which is failsafe if you thing about it. Ive done 100 flights on fasst in me 3.1m xtreme 260, absolutely perfect piece of gear, heaps better than G3 for me.

[Leardriver]

Well for what it is worth I was able to duplicate the original problem almost down to a degree of what Lazun originally reported with both a R6014FS AND a R607FS rx on the bench just a little while ago. I used a heat gun and a Raytec IR temp gun to measure temp as it increased. Within a degree of each other they both "went red" at 167-168 degrees. I was able to "reboot" them around 150 deg. Both these rx are brand new (a few weeks) and were still in the box. I bound the R607FS just for the test. The flip side of this is that the 6-7-8ch receivers have been out now for a while and I don't remember hearing anything at all regarding any type of loss of signal in the air. Maybe it happened but I don't remember hearing about it(except for the service bulletin issued by Futaba some 6-7ch tx having the same coding or ID). I am honestly thinking that there is enough air flow through the fuse that the rx should be cooler in flight than on the ground. I am thinking about getting a Venom temp gauge like we used to use in heli's to record the peak temp on the rx. I am also thinking about how I can increase cooling to the rx. Perhaps a CPU fan and some sort of ducting for outside air to be channeled over the rx. I am not sure yet.

Now for those that are getting ready to say go get Spectrum...not so FAAST (couldn't help myself here...lol). A friend of mine, who is in the R/C electronics business, has actually disassembled and examined the spectrum satellite rx and taken the information right off the the chip and found per the manufacturers spec on their very own website that the chip is only rated Commercial (not industrial) and is good up to 70C or 158deg F. He has mentioned that customers have called him and mentioned the they have had a lockout or binding issue with the Spectrum setup but could not duplicate it. It is possible that they are suffering from a thermal issue as the Futaba is.

Here are the specs on the Spectrum chip he sent me. By the way..I am not trying to bash JR, just trying to pass on some info that may be helpful.



The guys at Spektrum use this chip CYRF6936-40LFXC in
every satellite receiver they sell.
This is a commercial temperature range chip, 0C-70C. See
page 31 of the data sheet attached.




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[bgold]

I see the giant heat sinks Fromeco uses on their regulators and have heard them say that getting rid of heat is one of the leading factors in how many amps they can deliver. I don't see anything like that on the receivers and I'm curious what kind of power the receivers that are having problems are handling.

[Radioactive]

Curious here, these temps are pretty hot, i just temped an electric motor after a 3d flight, and it was approaching 140.. man i couldn't hold on to it for long at all.. these temps are smoking hot ! In other words, somethings wrong somewhere with these installs as well.

[klhoard]

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This is exactly why I have been and always will be an XPS fan. . . .
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