Airtronics MX-3FHSS (Problem)

Airtronics MX-3FHSS (Problem)
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Airtronics MX-3FHSS (Problem) - 6/28/2008 6:49:19 PM

wrob

Posts: 152
Joined: 1/30/2004
From: Apple Valley, CA, USA
Status: offline

I bought this radio for my RC8 about two weeks ago. Took the RC8 to practice at the track and it did fine. The next weekend I took it to the race. During practice the car went to wide open from about a quarter throttle. Eventually flipping over a seizing the engine. When I picked up the car, it seemed to be connected to the radio. Everything was working. Checked out the car and the throttle servo, linkage, and carburetor were all working properly. Once again, I don't suspect these components as the car accelerated to full throttle. Therefore, I'm thinking the radio/receiver caused the problem. by the way, the fail safe was set properly.

The only thing I found was that the battery switch (Airtronics item) seemed to be slightly loose but was properly plugged into the battery. I've also notice with this radio that when I turn on the battery switch, the throttle servo cranks wide open until the receiver and radio make the link (connect). What's the deal with this? Doesn't it seem like it should go straight into fail safe when it's turned on? One of my scenarios about how this happen is that there was an intermittent power problem and the receiver cranked the servo open. My second guess is that i have a bad radio.

Any information about the MX-3FHSS regarding this issue would be appreciated. Is there another spread spectrum radio out there that doesn't do this? I'm thinking me and Airtronics are parting ways.

PS. My receiver battery is brand new 1600 Mah and was charged for 24 hours on a peak charge just before this happened. Sevos are operating in the normal direct (not reversed).

< Message edited by wrob -- 6/29/2008 4:57:12 AM >

Post #: 1

RE: Airtronics MX-3FHSS (Problem) - 6/30/2008 7:23:44 PM

Igotntc3andrevo

Posts: 1013
Joined: 4/13/2005
From: glenwood, IL, USA
Status: offline

wow im sorry to hear this...I just ordered this radio from tower yesterday....Hope someone can answer your question.

_____________________________

wish i was a millionaire

(in reply to wrob)

Post #: 2

RE: Airtronics MX-3FHSS (Problem) - 7/1/2008 3:47:19 AM

Snaut Rocket

Posts: 3021
Joined: 1/16/2006
From: Merced, CA, USA
Status: offline

Hrmm.
I turn my power to my truck on first. that turns on all the servos.
Then i turn on the controller. It doesnt do any thing for about 2 seconds while it binds and then i get power to my throttle and steering.
But i dont see it shooting the throttle open before it makes connection

dont know why yours does that.
A way to check your fail safe just to make sure is, hold the throttle all the way down and turn off the transmitter. If the throttle goes back to normal than your okay with the fail safe.

< Message edited by Snaut Rocket -- 7/1/2008 3:48:18 AM >

_____________________________

Lots of holes in the desert. Lots a problems buried in those holes. Monster Gt 4.6: with brushless setup soon to come.

(in reply to Igotntc3andrevo)

Post #: 3

RE: Airtronics MX-3FHSS (Problem) - 7/3/2008 6:05:45 AM

choppaholix

Posts: 228
Joined: 8/23/2007
From: applevalley, CA, USA
Status: offline

quote:

ORIGINAL: wrob

I bought this radio for my RC8 about two weeks ago. Took the RC8 to practice at the track and it did fine. The next weekend I took it to the race. During practice the car went to wide open from about a quarter throttle. Eventually flipping over a seizing the engine. When I picked up the car, it seemed to be connected to the radio. Everything was working. Checked out the car and the throttle servo, linkage, and carburetor were all working properly. Once again, I don't suspect these components as the car accelerated to full throttle. Therefore, I'm thinking the radio/receiver caused the problem. by the way, the fail safe was set properly.

The only thing I found was that the battery switch (Airtronics item) seemed to be slightly loose but was properly plugged into the battery. I've also notice with this radio that when I turn on the battery switch, the throttle servo cranks wide open until the receiver and radio make the link (connect). What's the deal with this? Doesn't it seem like it should go straight into fail safe when it's turned on? One of my scenarios about how this happen is that there was an intermittent power problem and the receiver cranked the servo open. My second guess is that i have a bad radio.

Any information about the MX-3FHSS regarding this issue would be appreciated. Is there another spread spectrum radio out there that doesn't do this? I'm thinking me and Airtronics are parting ways.

PS. My receiver battery is brand new 1600 Mah and was charged for 24 hours on a peak charge just before this happened. Sevos are operating in the normal direct (not reversed).

I've herd other people had same problems with their MX-3FHSS.Thats the reson im sticking with my MX-3-S i have no complaints.

_____________________________

If there's movement there's room for improvement

(in reply to wrob)

Post #: 4

RE: Airtronics MX-3FHSS (Problem) - 7/3/2008 8:31:28 PM

wrob

Posts: 152
Joined: 1/30/2004
From: Apple Valley, CA, USA
Status: offline

I bought a second receiver, it doesn't move the servos when I turn it on. Which seems right. There must be something wrong with the first receiver. It certainly cost me a lot of money.

My transmitter takes like 30 seconds or longer to bind with either receiver.

PS

Posting this a day later after taking my buggy to Revelation Raceway in Ontario.

I had problem last night with the steering servo (brand new HS-965MG) losing control of my buggy in a turn. The buggy went straight... This is with the second receiver. A week earlier, with another receiver (same radio), I was having difficulties turning my Truggy with a HS-645MG servo. I then thought it was my battery or servos saver adjustment (which was a bit loose). At Revelation Raceway last night, I put my new spare HS-7955TG in place of the HS-965MG and didn't have a problem the rest of the evening. Remembering back to when I bought my RC8 RTR, the MX-3FHSS just hated the stock servos - they quivered and buzzed.

Finally, here's what I think may be the problem. The frame rate of the receiver isn't compatible with the servos I have (and probably a lot of servos out there). I came to this conclusion after reading about the DX3R's frame rate adjustment.

http://www.rcuniverse.com/forum/m_7037222/tm.htm

I think the Airtronic MX-3FHSS has a frame rate of 100hz (not sure). Fast. Perhaps too fast for some servos.

All the problem servos were analog, the HS-7955TG is digital (no problems).

My advise, don't buy this radio unless you're sure it's compatible with your servos. I think it's a good radio, but just not matching up with what I have. It has been an expensive lesson. $250 for the radio and extra receiver, $200 for a blown up engine, tore up a couple of cars and I've bought about 4-5 new servos trying to get things to work. I've spent over $700 on this voyage (not all lost) and I'm now looking to buy something else. Probably a DX3R...

I don't recommend this radio to upgrade a RTR vehicle with less expensive servos.

I'm not a RC Radio technician - just a consumer offering a word of caution.

< Message edited by wrob -- 7/5/2008 1:24:47 AM >

(in reply to choppaholix)

Post #: 5

RE: Airtronics MX-3FHSS (Problem) - 7/31/2008 9:35:37 AM

bans

Posts: 5
Joined: 7/18/2008
From: sT.pauls bay, MALTA
Status: offline

Hi,
I have just ordered this radio and I was wodering what servos did you have?
I am asking this because I have sanwa servos. I am going to put the servos that come with the transmitter on the car.Do you think I will have problems too these servos?

(in reply to wrob)

Post #: 6

RE: Airtronics MX-3FHSS (Problem) - 8/3/2008 10:52:21 PM

Thunderbird93

Posts: 513
Joined: 3/20/2005
From: Bath, NY, USA
Status: offline

Ok...so I'm not the only one having troubles with the MX-3. I've had it for a year and it's worked absolutely fine up until today, but from day 1 I also have to wait at least 30 seconds or more for it to bind. 2day I had my XTM XLB out and all of a sudden lost control and it crashed into a nearby pole and sat there full throttle until I got there to turn it off. After a few minutes I tried it again in my driveway and once again I had no control of the truck. So I tried to re-bind it and it won't even bind now. Also when it does bind the servos buzz, which I'm not sure is normal or not.

_____________________________

S-Maxx- Sirio .23, XLB- LRP .28 Spec 3 w/ JP-3, Ultra LX Pro- Picco .26 Outlaw, Revo- FR .27, RS4 3- XTM .15

(in reply to bans)

Post #: 7

RE: Airtronics MX-3FHSS (Problem) - 8/8/2008 6:00:05 AM

wrob

Posts: 152
Joined: 1/30/2004
From: Apple Valley, CA, USA
Status: offline

I'm still having problems with mine. Slow binding, servos buzz and sometimes the transmitter goes out (loose connection somewhere in the battery compartment). Very, very, frustrating... The guys where I bought it, have seen me go thru h@ll with it at the race track, came over and said to bring it back for an exchange. Lots of stress when it won't bind just before your race. I thought about it but don't want more of the same. I will buy a DX3R when finances are available.

(in reply to Thunderbird93)

Post #: 8

RE: Airtronics MX-3FHSS (Problem) - 8/8/2008 4:11:08 PM

Thunderbird93

Posts: 513
Joined: 3/20/2005
From: Bath, NY, USA
Status: offline

Well, I put mine back in my Ofna buggy and works just fine. It only takes about 2 seconds to bind when I turn the radio and car on. When I tried to bind it the first time it wouldn't work so I tried it again and now it works fine. Hopefully it'll stay working.

_____________________________

S-Maxx- Sirio .23, XLB- LRP .28 Spec 3 w/ JP-3, Ultra LX Pro- Picco .26 Outlaw, Revo- FR .27, RS4 3- XTM .15

(in reply to wrob)

Post #: 9

RE: Airtronics MX-3FHSS (Problem) - 8/8/2008 6:49:03 PM

Snaut Rocket

Posts: 3021
Joined: 1/16/2006
From: Merced, CA, USA
Status: offline

quote:

ORIGINAL: wrob

I bought a second receiver, it doesn't move the servos when I turn it on. Which seems right. There must be something wrong with the first receiver. It certainly cost me a lot of money.

My transmitter takes like 30 seconds or longer to bind with either receiver.

PS

Posting this a day later after taking my buggy to Revelation Raceway in Ontario.

I had problem last night with the steering servo (brand new HS-965MG) losing control of my buggy in a turn. The buggy went straight... This is with the second receiver. A week earlier, with another receiver (same radio), I was having difficulties turning my Truggy with a HS-645MG servo. I then thought it was my battery or servos saver adjustment (which was a bit loose). At Revelation Raceway last night, I put my new spare HS-7955TG in place of the HS-965MG and didn't have a problem the rest of the evening. Remembering back to when I bought my RC8 RTR, the MX-3FHSS just hated the stock servos - they quivered and buzzed.

Finally, here's what I think may be the problem. The frame rate of the receiver isn't compatible with the servos I have (and probably a lot of servos out there). I came to this conclusion after reading about the DX3R's frame rate adjustment.

http://www.rcuniverse.com/forum/m_7037222/tm.htm

I think the Airtronic MX-3FHSS has a frame rate of 100hz (not sure). Fast. Perhaps too fast for some servos.

All the problem servos were analog, the HS-7955TG is digital (no problems).

My advise, don't buy this radio unless you're sure it's compatible with your servos. I think it's a good radio, but just not matching up with what I have. It has been an expensive lesson. $250 for the radio and extra receiver, $200 for a blown up engine, tore up a couple of cars and I've bought about 4-5 new servos trying to get things to work. I've spent over $700 on this voyage (not all lost) and I'm now looking to buy something else. Probably a DX3R...

I don't recommend this radio to upgrade a RTR vehicle with less expensive servos.

I'm not a RC Radio technician - just a consumer offering a word of caution.

Well yes.
It helps to be using digital servos, with 2.4ghz controllers.
Im running a digital steering servo, but analog throttle.
And i can see it some times twitch, but nothing big.
You said you bought another receiver, you could of just sent it in to airtronics and they would have replaced free of charge, cause of the warranty.

_____________________________

Lots of holes in the desert. Lots a problems buried in those holes. Monster Gt 4.6: with brushless setup soon to come.

(in reply to wrob)

Post #: 10

RE: Airtronics MX-3FHSS (Problem) - 10/5/2008 12:46:20 AM

Redharris

Posts: 1243
Joined: 12/21/2007
From: Panorama, CA, USA
Status: offline

Hey Guys....
I just bought the MX3 FHSS for my nephews birthday a couple weeks ago. Got a Killer deal from HOBBY People. $119 + tax for transmitter and rcvr!
But I am having trouble Binding it. It takes 2 or 3 tries to bind the Rcvr to the Xmtr and then it works fine.
But when you unplug the rcvr battery (nitro car), the radio looses its BIND.
Sometimes this even happens when you simply turn everything OFF then ON again.
I am probably going to have to Warranty this Radio...

Anybody else experiencing these sorts of problems?

_____________________________

OFFICIAL HIMOTO RACING SUPPORT - THE REVOLUTION HAS BEGUN
http://himotoracing.com :: http://himotoracingusa.com

(in reply to Snaut Rocket)

Post #: 11

RE: Airtronics MX-3FHSS (Problem) - 10/5/2008 2:15:36 AM

choppaholix

Posts: 228
Joined: 8/23/2007
From: applevalley, CA, USA
Status: offline

quote:

ORIGINAL: Redharris

Hey Guys....
I just bought the MX3 FHSS for my nephews birthday a couple weeks ago. Got a Killer deal from HOBBY People. $119 + tax for transmitter and rcvr!
But I am having trouble Binding it. It takes 2 or 3 tries to bind the Rcvr to the Xmtr and then it works fine.
But when you unplug the rcvr battery (nitro car), the radio looses its BIND.
Sometimes this even happens when you simply turn everything OFF then ON again.
I am probably going to have to Warranty this Radio...

Anybody else experiencing these sorts of problems?

What i know about this radio is that you gotta wait a few second for the tx and rx to find each other.That's one of the few reason that im sticking with my MX3-S. Its a cool radio then its not so cool

_____________________________

If there's movement there's room for improvement

(in reply to Redharris)

Post #: 12

RE: Airtronics MX-3FHSS (Problem) - 10/5/2008 1:22:47 PM

jaysrccars

Posts: 2
Joined: 9/6/2008
From: bath, NY, USA
Status: offline

RedHarris I had the same problem with mine...and I even used to lose the bind when I was running my car. My main problem other than losing the bind was waiting up to 20 seconds for the car and radio to bind. But now for some reason it's working real good and it binds almost instantly Knock on wood. I was told that you have to turn the radio on first then the car to get a good bind. Anyone knows i that's true?

(in reply to choppaholix)