RE: AXI 5330/FAI  
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RE: AXI 5330/FAI - 3/1/2006 12:40:51 AM   
hwt


 

Posts: 9
Joined: 2/8/2005
From: Reidsville, GA, USA
Status: offline 		I have a 14mhz futaba radio and it is operating pcm. I have tried the radio in an icepoint with a Kohler Actro 32-3 with a jeti 77 speed control with duralite 6450 mah 18.5 volt full bore and have had no range problems but the engine is not enough for my verticals. If I get it proper up enough for the verticals the engine will max out at 245 degrees F. and shut down... Harold...

(in reply to patternflyer1)
       Post #: 51

RE: AXI 5330/FAI - 3/1/2006 2:27:43 AM   
ExFokkerFlyer



Posts: 426
Joined: 5/3/2002
From: Fresno, CA,
Status: offline 		Harold... hmmm this is interesting. I test flew my Genesis today with my AXI, Jeti 90, and 14mz. The range checked fine but in the air I would get a couple 'burps' from the motor each flight. The first time it happened I thought I bumped the throttle because my hands were shaking so bad... The next flight the motor definitely cut off. Not from heat, or anything like that, all components were just warm to the touch on landing I have my failsafe set to cut the motor, as I have always done with electrics. I don't have a choke on the the long lead to the ESC, never needed one in the past... but now i think I will get one anyway. I think my problem might be a bad ESC, although it always flew fine in the past. If I get a chance tomorrow I will try out my other one... if the same thing happens then I know it's a lock out problem.

These receivers have been known to have issues like that... do you have a short antennae on your G3 receiver? Or is it the longer 'standard' length?

_____________________________

Any pilot can describe the mechanics of flying. What it can do for the spirit of man is beyond description.- Barry Goldwater

(in reply to hwt)
       Post #: 52

RE: AXI 5330/FAI - 3/1/2006 7:39:52 AM   
patternflyer1



Posts: 1250
Joined: 7/3/2003
From: Tracy, CA, USA
Status: offline
Hmmmm. Sounds kinda fishy to me.

I know where you could both buy a Stylus.....
I'll even let you borrow one Tom.

Seriously though. If you are both flying on PCM and have your failsafe set to ?????
Then why would the throttle only glitch? Seems to me like it wouldn't be the reciever.
If you think it is the reciever, where are the antenna's vs regulator, esc, carbon tubes??

Tom, I emailed you my thoughts on yours. Just thoughts though, from a very mindless man at this point. lol


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(in reply to ExFokkerFlyer)
       Post #: 53

RE: AXI 5330/FAI - 3/1/2006 8:11:25 AM   
ExFokkerFlyer



Posts: 426
Joined: 5/3/2002
From: Fresno, CA,
Status: offline 		nobody every accused you have having a mind my friend... on of your more endearing traits!

We'll see in a day or two what the issue was... i think it's the ESC at this point... I had some glitches with the 9Z as you remember, and after a visit to Radio South, they confirmed the probability of a faulty antenna mount and a few 'loose' wires. But with all those glitches, never did I hear the motor cut out (even with the failsafe set to 0%)... today it very definitely was cutting out. I have a couple ESCs not doing anything so I swapped one out... hopefully that's it. My range checks were all good, so that eliminates the Rx as far as I can tell.

That's why I'm wondering which Rx Harold is running, short or long antenna... Most reports I've read is that few had issues before the mod, but I haven't read any that had issues after the mod...

_____________________________

Any pilot can describe the mechanics of flying. What it can do for the spirit of man is beyond description.- Barry Goldwater

(in reply to patternflyer1)
       Post #: 54

RE: AXI 5330/FAI - 3/1/2006 8:49:05 AM   
Malcolm H



Posts: 274
Joined: 10/24/2002
From: glasgow, UNITED KINGDOM
Status: online 		Tom,

From what you are describing you have noise entering the receiver via the ESC connection. Unfortunately even opto isolated receivers are not immune from this. Ben Werner of Mutimode Technologies makes a small filter unit which connects between the ESC and the receiver to stop this. As you will be using a separate receiver battery and don't need a BEC connection through the filter unit you can use the LC version which only weighs 2.2 grams.

You can contact them here and the ood bit is that if it doesn't cure the problem you can return the unit for full credit.

http://www.multimodetech.com/index.php?option=com_frontpage&Itemid=1

I have no connection with them at all BTW

Regards

Malcolm

(in reply to ExFokkerFlyer)
       Post #: 55

RE: AXI 5330/FAI - 3/1/2006 8:51:48 AM   
Malcolm H



Posts: 274
Joined: 10/24/2002
From: glasgow, UNITED KINGDOM
Status: online 		Tom,

From what you are describing you have noise entering the receiver via the ESC connection. Unfortunately even opto isolated receivers are not immune from this. Ben Werner of Mutimode Technologies makes a small filter unit which connects between the ESC and the receiver to stop this. As you will be using a separate receiver battery and don't need a BEC connection through the filter unit you can use the LC version which only weighs 2.2 grams.

You can contact them here and the ood bit is that if it doesn't cure the problem you can return the unit for full credit.

http://www.multimodetech.com/index.php?option=com_frontpage&Itemid=1

I have no connection with them at all BTW

Regards

Malcolm

(in reply to ExFokkerFlyer)
       Post #: 56

RE: AXI 5330/FAI - 3/1/2006 11:10:11 AM   
BaldEagel



Posts: 4175
Joined: 10/12/2005
From: Wychling, Kent, UNITED KINGDOM
Status: offline 		Hi Guys

I have an Extra 300L with a AXI outrunner on 6S2P and had simmilar interference problems until I cleaned my transmitter airial, not oiled or WD40'd but cleaned with a degreasing agent, I have also tried wrapping the reciever in cooking foil with mixed results, put in over and bake at 200deg?
The receiver airal is now in the wing running in a plastic tube at right angles to the closed loop (Zaga airial) wires, touch wood no more glitiches.

Hope this helps
Mike

< Message edited by BaldEagel -- 3/1/2006 11:56:10 AM >

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No matter what anyone says 100% is the maximum you can get.

(in reply to Malcolm H)
       Post #: 57

RE: AXI 5330/FAI - 3/1/2006 1:26:05 PM   
ExFokkerFlyer



Posts: 426
Joined: 5/3/2002
From: Fresno, CA,
Status: offline 		Thanks for the input guys. I do have a Futaba extension with a choke on order... and you very well may be right that it's the source of the problem. The only thing that has me thinking it's the ESC is that it seems that the only channel that was affected was the throttle. The plane never 'seemed' to be locked out. Now I had the plane up trying to get it to do it again and try to put some other input in there to see if the plane was truly in lock out, and I couldn't repeat the problem. The receiver and trans are brand new and flight tested for 10 flights in a Banchee, no problems whatsoever... The ESC is an easy fix and if it is the problem it would explain a few other problems I had with the plane that it was in previously.

I ran this exact same set up, same motor,batts,esc everything in two airplanes and never had a problem like this... odd

_____________________________

Any pilot can describe the mechanics of flying. What it can do for the spirit of man is beyond description.- Barry Goldwater

(in reply to BaldEagel)
       Post #: 58

RE: AXI 5330/FAI - 3/1/2006 3:25:45 PM   
patternrules


 

Posts: 547
Joined: 7/28/2002
From: Nineveh, IN, USA
Status: offline 		Throttle can be a little weird as last summer at a contest we got caugh in a down pour I was able to save my freinds Electric plane first and my Smaragd got drenched no water got inside the plane but as it turned out my throttle went into failsafe the next 3 flights, I kept thinking it had died ( glow power) but it was just at idle. I could reset the trottle by moving the stick to idle then it would work again. Took 3 flights to figure that out but I didn't anymore after that we tried changing servos nothing fixed it, changed receivers and it was fixed. After talking to Radio South they said that the it was highly possible for the throttle to go on failsafe and nothing else even though it is channel 3, it seems to be the first to go, as it should be I consider it a a non credicial channel.
Dont' know if any of this can be related to your problems but could be.
Steve Maxwell

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Steve Maxwell

(in reply to ExFokkerFlyer)
       Post #: 59

RE: AXI 5330/FAI - 3/1/2006 4:29:22 PM   
lazyboyflyer


 

Posts: 133
Joined: 6/28/2005
From: Wildomar, CA, USA
Status: offline 		I had a RF problem with mine and couldn't figure out the problem. I first replaced the receiver, same problem, then the ESC (Jeti 90 Plus), same problem, then finally the motor, the motor was the source of the problem. I have no Idea why the motor (Axi 5330/18) was the problem, but it was. The interference started gradually, then got worst, I could take off with no problem, but in the air would get hit when I throttled for uplines or any time I throttled up. Throttle down, no hits, I had no problem landing the plane either. I also tried inline chokes and inline RF filters, but that didn't work. If this sounds like your problem, send in your motor for free replacement. This solved my problem and hopefully will solve yours.

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(in reply to patternrules)
       Post #: 60

RE: AXI 5330/FAI - 3/2/2006 3:16:51 AM   
ExFokkerFlyer



Posts: 426
Joined: 5/3/2002
From: Fresno, CA,
Status: offline 		Well guys... I changed the ESC last night, rerouted some wiring away from the batteries and... same problem. Took it up and the power dropped out in a vertical to where it sounded like a real rich 4 stroke having the coals put to it... three quick cuts at about half throttle.

Took it home talked to some people considered thermal cut out (not likely ESC is almost cold), low voltage cut out (ESC programmed for 2.7V per cell and wattmeter showed during extensive run ups no significant drop in voltage)...

So I changed the receiver... pulled out the G3 receiver (with the shortened antenna done by the factory) and put in a well tested 1024 reciever... results? Two beautiful flights with my new favorite plane with no glitches!!!

Every flight previously had lock outs... two flights with-out-a-one!

Guess I'm calling Futaba in the morning.

_____________________________

Any pilot can describe the mechanics of flying. What it can do for the spirit of man is beyond description.- Barry Goldwater

(in reply to lazyboyflyer)
       Post #: 61

RE: AXI 5330/FAI - 3/2/2006 9:07:16 AM   
BaldEagel



Posts: 4175
Joined: 10/12/2005
From: Wychling, Kent, UNITED KINGDOM
Status: offline 		ExFokkerFlyer

Forgive me if you have already stated this but is the G3 a PPM receiver, cause I am worried for you, by changing to a PCM 1024 you may just be hidding the problem rather than curing it, you should be able to fly glitch free with PPM and then change to PCM for the extra comfort not to cure a problem. As I said sorry if you already have stated the obvious as I have here.

Mike

_____________________________

No matter what anyone says 100% is the maximum you can get.

(in reply to ExFokkerFlyer)
       Post #: 62

RE: AXI 5330/FAI - 3/2/2006 3:02:07 PM   
patternflyer1



Posts: 1250
Joined: 7/3/2003
From: Tracy, CA, USA
Status: offline 		The g3 is the latest 14 channel synthesized pcm reciever from Futaba. $340 bucks I beleive. It's for the 14 mz radio.

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(in reply to BaldEagel)
       Post #: 63

RE: AXI 5330/FAI - 3/2/2006 3:40:49 PM   
BaldEagel