Are there any issues using the R608FS, R6014FS, or the R607FS rx's ? Ive some things here and there that suggest some are having issues with the lower voltage output and the 5955's. Just want to confirm.

We don't know. We have not worked with Hitec servos. With the very large number of Futaba servos, we only are able to work with those. If a non-Futaba piece of equipment works well, then it works. If it doesn't, there's little Futaba can do about it. As we have stated many times before, Futaba does not test non-Futaba equipment. If a manufacturer wants to make things to work with Futaba systems, it is up to them to insure compatibility. Futaba does guarantee that all Futaba equipment is cross-compatible, unless, of course, the equipment is very old. Yes, some old Futaba servos may no longer work with some of the modern equipment, but that is to be expected.

I really wasn't looking for Futaba to do anything to make other brands of servos work with their rxs. Just trying to see if there were any reported problems because in the past there was. I have over 2000$ worth of servos so Id hate to buy a new radio and THEN find out things didnt work. They all work fine with my regular Futaba FM rx's.

Hi I've just checked out my FASST R606FS RX with the following HI-TEC servos HS-645MG, HS-5745MG and HS-805BB and they all worked fine, this is with two 6 volt batts via battery backer (both batteries only had 30% charge).

Yak54.

There are reports that some non-Futaba servos don't work with the R6014FS receiver because the new technology in the receiver has a lower-voltage signal level than some servos are able to interpret. This lower voltage resulted from the type of circuitry required to attain the processing speeds. Newer chips use lower voltages. Some older servos may not operate well with the newer receivers.

Bax,

Hope I can help out here by stating that I'm flying with a 5955, several 5945's, and a 5925 on a R6014FS. I've got probably a dozen flights on it now with no hiccups at all. I am using a SmartFly Power Expander but doubt that is making a difference with the questioned problem.

That makes all the difference.
Power Expanders boost the servo signal. So using a power expander from Emcotec, Powerbox or Smart-Fly is a solution to this problem.
http://www.rcuniverse.com/forum/m_72.../anchor/tm.htm


Lars

Well that is crazy if you have to use a Power Expander to get the 5955's to work with the FAAST rx's---

Joe,

I thought you were a diehard dsm2 user. Which futaba were you considering for purchase and why the change?

PEACE

LOL! Actually I was a die-hard Futaba user for 20 years--wanted to try something new so got the 9303--I have no issues with Spektrum at all..I'm just having a tough time getting used to the 9303 tx...Im so used to my 9C!! Old habits die hard!

If I can get a straight answer about the 5955's I was considering selling my 9303 for the 10C..All my planes are 5955 equipped and I dont want to get the 10C to find out the 5955's dont work. If not then I will stick to the 9303...

I have a large number of FP-S28, FP-S38, FP-S48, FP-S148, and FP-S134 servos in older airplanes. Will the servos listed work with the 8U FASST module?

Bill

glad I saw this thread.my best friend has both the 2.4 7C and the 6 channel 2.4 radio.yesterday a problem developed with his hitec servos on his 3D extra.the hs 65 mg's apparently don't have much torque.we thought maybe the servos on the tail surtfaces were worn out.but after a trip to his local hobby and installing 2 new hs65mg's.the problem has not gone away.The esc is an airboss45 and is the standaed match for the 3D planes ..not knowing much about electronics we are also wondering if we are getting a lower signal or voltage.. got any ideas???

If you search other forums you'll see some reports about this problem. I hooked up my 6014, plugged in a 5955 to the 1 Rx slot, then 2, then 3, then 4, then 5... you get the picture. All worked fine. Then, I plugged in two 5955 servos ganged together with a Y connector... first into slot one... and then two. Worked fine. After that I tried 3... 4... 5... etc... everything went crazy each time. The rudder (servos in question were on the rudder) fluttered wildly back and forth quickly. But on one and two it was fine.

Day after that I received the two 608FS Rxs that I ordered... all channels worked fine with one and two servos...

Apparently the signal voltage on the 6014FS is lower than norm on channels 3-14. 1 and 2 are 3.3V, the rest are 2.7 I believe (not an expert, just read it somewhere, search the jet forum for more info). The fix for this is to use a Powerbox, Smart-Fly or what-have-you. I bought this system to avoid having to do that... and now it appears that in order to use this system I MUST use these other products. Sure I could just use Futaba products, but what do I do with the thousands of dollars of Hitec servos that I have??? Guess I shouldn't have bought them.

Anyway, the 608FS appears to work, but I don't really trust it and will likely use two of those along with a PowerBox to solve some of my problems... that way I know that voltage will remain at acceptable levels, the 6014FS is certainly not reliable how I want to use it, unless I put a Powerbox or Smart-fly board in the picture.

Though this shouldn't be posted in Futaba's forum, it will likely be deleted.

Hope that a solution can work out to facilitate using hitec digital servos with new futaba 2.4 rxs. I have quite many of hitec servos. It is ridiculous to get a power expanders for each and every airplan I own now and in future.

From my experience, and only my experience, a power expander is only needed for ganged servos with a Y... this is just bench testing though... I have read of others having issues, but that's it... just read it.

So if you can fit all your servos in the 14ch rx without using Y's then it seems that there is no problem. This should be possible with the servo-grouping feature on the 10C, 12FG and 14MZ correct ?

I believe you but it would seem totally bizarre for an engineer to intentionally design different signal voltages for different channels. After all the designer doesn't have any idea of what servos will be used in what locations.

Clarification is needed.

Bill

This is the link where I got some of my information...

http://www.rcuniverse.com/forum/m_7243983/tm.htm

I don't profess that all is correct, however the channel 1 and 2 versus the rest of the channels problem did come true. I did not sample the voltages, but the ganged Hitec 5955TG would NOT work on channels 3-14, but would on 1 and 2... leading me to believe that information may be true. I did test a 5945 ganged set up on a Y, and that DID work fine on all channels... That was just the 6014FS.

The 608FS so far works fine with all combos, and I would like to see if the voltages are consistant or if they are like the 6014FS... I don't have the ability to check that myself.

Unless you are using ganged servos on the 14 channel, you might not have a problem. That said, with all the issues I have had with mine (not mentioned here) I don't quite trust it, so I'll likely use an expander or PowerBox... leaning towards the Powerbox now...

Check out the thread above, has some good info. And since this thread is on Futaba's board here on RCU, this will likely be deleted tomorrow as it's for them to answer questions, not for us to speak amongst ourselves.

Josey,

i should also add that in the thread I posted and/or some other site I have heard of guys having issues with just one Hitec Servo on one of those channels. Again, worked fine for me, but...

Tom M

Thanks Tom---I dont get it..I know there were issues with some Futaba 72mhz rx's and the Hitecs a few years ago. IIRC, if you sent the servos back to Hitec they did some magic on them to make them work with the Futaba rx's...Supposedly any newer servos were ok. Ive been running 5955's and R149 PCM rx's with no issues--even Y'd...Rumor has it that as long as they are newer versions AND from the same production batch, then you will be ok too---but of course this is just speculation.

I am running 5945s, 5985s, and 5955s with DP148. No PE. 5985s on Y. 9C. Works great.

Some of 5945s were three year old.

Joe,

I have used with much success, the old 1024 Rxs with my 14mz with ganged Hitec servos with a Y. I did not however use the 5014 rx as I could never get mine to work on a Pattern electric I had... I sent it back, they said there were no problems, but 'here is a new one anyway' and sent that to me. Never used it, still in a box in my kitchen actually. So I never experienced any further problems because I didn't use it. I believe this issue is only with the 6014FS or the 14 channel FAAST system... Enough to be a BIG problem for me.

Well so far it looks like the best bet is either the buffered leads or some type of power expander...I guess its not the end of the world but it stinks that its even a concern in the first place. I think you are right that its only affecting the 6014's and not the other FASST rx's..

I just got my first plane in the air using the R6014FS receiver and 5 Hitec 5955's plus two smaller servos for throttle and choke. I was impressed how well it all worked. Previously I ran 12 new 5955 servos all at once directly in the receiver and it all worked flawlessly. But I went ahead and used the power expander to avoid running high current through the receiver power bus. I would have done that regardless on any receiver running a bunch of 5955's. Thanks Futaba! I wouldn't trade my 12Z for anything now. Well not another brand transmitter at least. I'm thinking 14MZ next.
Doug Williams

I think that is the crux of the issue Doug. Either use Futaba servos (which according to the posted info work fine) or a power expander, and everything will be fine. If you don't, you MIGHT, depending on servo choice have an issue. I am glad your system works, however the sole purpose of me spending $4K (yes I bought two, one for my father, one for me) was to avoid using a power box or expander. Works fine without in 72 mhz (not in my experience, but with 99% of the rest of people apparently), but if you use the 6014FS you MIGHT have issues depending on your set up. If you are using a Powerbox or an expander, you might not have issues. If you are using just the Rx to distribute the power with the servos pluggged in one for one into the Rx (no Ys), you MIGHT have no issues... if you are trying to use Ys on the 6014 you probably will have issues without a powerbox or expander.

Not a big deal is you are JUST switching now. But if you are switching from 72 mhz, with a set up that has proven to work w/ 72 mhz, you might want to look into it further. I wish I had. It should work with some sort of power distribution system... but that was the whole point in the first place, to avoid that and just use the Rx. According to Futaba, if you use their servos, you won't have a problem... anything else... well, not their problem! Okay fine... been loyal to Futaba for radios for well over 20 years... servos... well they haven't always had the best product. I am using more and more of their servos as they are improved, but I still use other brands... guess in this instance I may be being punished. Good thing for them I think that they screw up less than JR...