Paul Middleton Posted January 27, 2007 Share Posted January 27, 2007 I have a couple of brushless powered electric models both of which suffer from glitches. It seems to happen when the model is in certain positions in the sky and happens every time i fly them. I have the speed controller as far away from the reciever as i can get, and have tried various aerial positions. Ive even tried wraping the reciever in tin foil none of which have made any difference. Does a more exspensive speed controller help? and what about these jeti mpd recievers. help! Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 28, 2007 Share Posted January 28, 2007 Hi Paul, and welcome to the frustrating world of electric flying :)Electric models are inherently more difficult to suppress than IC powered ones. ALL the electric components including even the batteries and cables can potentially radiate electrical "noise"ESCs and motors are particularly troublesome. Most of my fleet is electric, and the most problematic is the EDF Sabre( electric ducted fan ).I have now gone 2.4 GHz, and my glitching problems have disappeared - (Insert smug grin here ) Now of course I am NOT suggesting that you take such a radical step, but here are a few tips.Use the best receiver and ESC you can afford.MPX IPD receivers ( and the Jeti ones ) are excellent. Jeti ESCs are the best in my opinion - but Hacker also do a nice job.Fit ferrite rings to all of the servo leads, and the ESC lead, just where they enter the receiver. If you want more info on this part, just post for help.Keep the receiver, and its aerial, and servo leads as far as possible from the ESC.Tinfoil around the receiver will only help with microwave interference....but it wont hurt to do it. The black art is a funny old girl, and some models will exhibit no problems at all, even when ignoring some of the "rules",and others are a complete nightmare. Good luck, and HTH.(PS buy a 2.4 GHz set.... insert winky here ) Quote Link to comment Share on other sites More sharing options...
nasa_steve Posted January 28, 2007 Share Posted January 28, 2007 paul have you extended any of the esc cables ie battery leads or motor wires. how are your aerial cables run in each of the models causing problems just a few questions for startersnasa Quote Link to comment Share on other sites More sharing options...
Paul Middleton Posted January 29, 2007 Author Share Posted January 29, 2007 I have not extended any leads on battery or esc. Ihave tried the aerial in the usual postion up to the fin, along the the wing and along the bottom of the fuselage, not always in a straight line but in a zig zag too, and it aint made no difference. The models in question are a rcm pelikan wild cap with axi 2820 10, tower pro 60 amp ecs running on 3s lipo with futaba r 137f reciever. blue arrow champion shock flyer with blue arrow brushless motor, tornado esc and r114f futaba reciever. i have a mini funtana with e flight motor (inrunner)tower pro esc r114f reciever and it has never Glitches. ps i got a funjet for xmas and any suggestions on a fast setup would be most welcome, cheers Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 29, 2007 Share Posted January 29, 2007 yes...but have you fitted ferrite rings like I suggested ? Quote Link to comment Share on other sites More sharing options...
Paul Middleton Posted January 29, 2007 Author Share Posted January 29, 2007 nope not tried ferrite rings who do you get emm from? Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 29, 2007 Share Posted January 29, 2007 RS or maybe one of the electric flight specialists - Puffin and the like.http://www.maplin.co.uk/Module.aspx?C=SEO&U=SiteMapByDept&ModuleNo=29788http://www.kcb.co.uk/shop/en-gb/dept_70.htmland so on.....Google is your friend :) Quote Link to comment Share on other sites More sharing options...
nasa_steve Posted January 30, 2007 Share Posted January 30, 2007 hi paul could i ask if you know what current you are pulling on the AXI i do know that there were problems when running on 10nicads or 3s cells and near 40amps.i have also heard reports on Tornado esc's being a little glitchy although i've not had it happen on mine. i notice that all your receivers are only single conversion ppm format meaning their interfereance rejection is very low when compared to dual conversion or even better pcm. i used to have a model that glitched like mad on PPM receivers so i tried a pcm receiver i never got one hit after that. there are many things to take into consideration when setting an aircraft up including parallel paths ie cables running along side each other etc etc. just a few things for you to look at regardsnasa Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 30, 2007 Share Posted January 30, 2007 Hmm, the old debate about PPM versus PCM rears its ugly head agin.I would NEVER use PCM again, after losing a favourite model due to lock out of fail safe. At least with PPM i could see glitching and interference problems, and hopefully recover. having said that... I have now gone 2.4GHz so interference and shoot downs etc are a thing of the past. Quote Link to comment Share on other sites More sharing options...
nasa_steve Posted January 31, 2007 Share Posted January 31, 2007 hi ya timbo must say i've not had any problems with that since i moved over to JR equipmentregardsnasa Quote Link to comment Share on other sites More sharing options...
Tony Charnock Posted July 21, 2007 Share Posted July 21, 2007 I have several electric models fitted with various receivers, brushless & brushed motors using nicads & lipos and have had numerous glitches. Two models dived in and were write offs.The only common factor is my Futaba FFT9CP on chanel 75. I have fitted a new RF Module but am still getting glitches on 2 of our flying sites, usually in line with radio towers fitted with various aerials including micro wave dishes. Has anyone had similar experiences & if so what was the solution if any? Would the 2.4 ghz system negate alleged micro wave interference?Yours hopefully, Tony. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted July 21, 2007 Share Posted July 21, 2007 Well despite some rumours stating that microwave radiation will affect 2.4Ghz, I have flown a parkflyer at our local park, which has a huge tower bristling with all sorts of comms dishes /aerials etc on the roof of the police headquarters.Did get glitching last time I flew with 35 mhz, but on the Spekky....no problems.JMTPW - no guarantees I am afraid. Quote Link to comment Share on other sites More sharing options...
Tom Sharp Posted July 21, 2007 Share Posted July 21, 2007 Timbo is 100% right, forget 35mhz go to 2.4ghz either Futaba or Spektrum. Our club is near to a motorway service station and you can see nine surrounding phone masts from our field. Whereas those with 35mhz sets are suffering gliches, those of us with 2.4 are suffering no interference at all. We have seen the future. Quote Link to comment Share on other sites More sharing options...
Kelly Posted July 22, 2007 Share Posted July 22, 2007 Solution2.4 ghz system. Quote Link to comment Share on other sites More sharing options...
the unmagnificent man Posted July 22, 2007 Share Posted July 22, 2007 2.4 couldnt agree more. Careful though once you choose you wont be able to go back. Oh wait though, maybe that was the MATRIX. Ah well same thing. Quote Link to comment Share on other sites More sharing options...
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