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Do you have radio problems using 6S brushles motors ?
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SpeedAssault
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Do you have radio problems using 6S brushles motors ? - 02.17.2010, 03:05 PM

Are you guys experiencing radio interference when running your High powered brushless systems like 6s with am radio's ?

My custom 1/5 AWD car running a Castle Mamba monster, castle 2200 brushless motor and 6s lipo has driven fine numerous times but suddenly I am having difficulty. I turn the car on drive it for a minute or two then it starts getting glitches and then gets worse even as I am walking to to car to try and grab it before it takes off.

I swapped out receivers, same thing. I switched to another am radio/rx and thought I fixed the problem but same thing happens after a minute or so. Am 27 and 75mhz . I plan to use a 2.4 system and convert my DX6i into a pistol but haven't figured out the components yet.

What's your experience and what radio's do you use ?

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What's_nitro?
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02.17.2010, 03:11 PM

My experience is that AM is horrible... Maybe it's just my neighborhood, but AM always glitched badly even before I went to BL. FM is a big improvement, but still glitches sometimes. FM is more succeptible to interference from metal-on-metal noise. 2.4 pretty much eliminates glitching due to radio interference.

Last edited by What's_nitro?; 02.17.2010 at 03:13 PM.
   
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SpeedAssault
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02.17.2010, 03:22 PM

Quote:
Originally Posted by What's_nitro? View Post
My experience is that AM is horrible... Maybe it's just my neighborhood, but AM always glitched badly even before I went to BL. FM is a big improvement, but still glitches sometimes. FM is more succeptible to interference from metal-on-metal noise. 2.4 pretty much eliminates glitching due to radio interference.
Edit) the only thing that I have changed is I made a 1/4" delrin battery tray. Dont know if it's related but it's weird that it ran ok for about 8 minutes and then I turned it off. I went back out and it was twitchy like crazy after a minute.
Thank u, wow metal on metal, well if fm is better than am for glitching then that is the big problem.
I have MOD 1 steel Spur gear with metal pinion and the steel dog bone driveshafts as well.

Should I buy a novak xxl Fm rx for my Ko propo FM radio or is that going to be a waste as well ?

Last edited by SpeedAssault; 02.17.2010 at 04:58 PM.
   
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bruce750i
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02.17.2010, 03:35 PM

I've been using this cheesy tx for a while instead of my spectrum. Works good, feels cheep and extra Rx are $7.00 from hobbyking. I had to try it.
   
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SpeedAssault
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02.17.2010, 03:56 PM

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Originally Posted by bruce750i View Post
I've been using this cheesy tx for a while instead of my spectrum. Works good, feels cheep and extra Rx are $7.00 from hobbyking. I had to try it.
uhh , more stuff from china

american money needs to stay here. i dont know any radios that are manufactured in the US but I'm going to at least buy from an american company


I believe part of the reason why Our Economy is horribe is because of things like this.
   
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What's_nitro?
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02.17.2010, 04:04 PM

Quote:
Originally Posted by SpeedAssault View Post
Thank u, wow metal on metal, well if fm is better than am for glitching then that is the big problem.
I have MOD 1 steel Spur gear with metal pinion and the steel dog bone driveshafts as well.
To elaborate a bit, AM can be thrown off by pretty much any EMF of sufficient strength. So pretty much anything electronic () can make it glitch unless the offending device is properly shielded. FM isn't as succeptible to general EMF, but metal-to-metal friction can create high frequency EMF that interferes with the FM signal. I had that happen on my Rustler. I was using a Futaba 3PM-FM. It would be ok at low speed/close range or low speed/long range, but at high speed it would glitch if it was too far away... So I'd be accelerating away and all of a sudden the car would just veer off the road into a bush; which meant that whatever interference it was recieving from the fast-moving drivetrain became stronger than the Tx signal at long range. When I got my Spektrum radio the problem disappeared.
   
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nativepaul
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02.17.2010, 06:42 PM

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Originally Posted by SpeedAssault View Post
uhh , more stuff from china

american money needs to stay here. i dont know any radios that are manufactured in the US but I'm going to at least buy from an american company


I believe part of the reason why Our Economy is horribe is because of things like this.


If you don't want a cheaply made Chinese budget radio that is fair enough, I don't either, but don't buy the same cheap radio at greater expense from a local company to help the economy, they will likely use much of the profit to expand their line buying more stock from China, instead but direct from china for $30 and give the other $20 to a homeless guy in your town, most likely he will spend it on food, drink or services all of which keep all the money in your own country, giving nothing to China which is better for the economy, I'm sure the homeless person in question would be happy about it, and you may get a warm feeling inside from doing a good deed, its a win win situation all round.


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suicideneil
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02.17.2010, 07:53 PM

Pfft, the homeless guy will spend it on smack & booze- but yeah, atleast that money will stay in America and go to American shops/ business'...

   
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lincpimp
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02.18.2010, 12:56 AM

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Pfft, the homeless guy will spend it on smack & booze- but yeah, atleast that money will stay in America and go to American shops/ business'...

Damn, 20 bucks can get you about 13 bottles of thunderbird. And a month of headaches. I say buy the bum 13 bottles of TB and give him one every day. See if he eventually gets wise and stops accepting them.

I have had good success with fm radios, only thing that seems to piss them off is the cheapo chinese becs. Moving components around will alos help. Am is just a bad idea... Go 2.4ghz it is cheap enough these days.
   
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simplechamp
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02.19.2010, 10:18 PM

Quote:
Originally Posted by SpeedAssault View Post
i dont know any radios that are manufactured in the US but I'm going to at least buy from an american company
...who then takes that money and pays the workers and factory over in China to make the radio, pay the freight company in China to ship radios back to US, etc.

Anyway... with such expensive, high-end vehicles like many on these forums drive, there is absolutely no reason to use an AM radio. At the least you could screw up your vehicle and cost yourself a lot of money and repair time, at the worst your vehicle could take off and really hurt someone. Gotta go with the 2.4Ghz. I started off with a Losi 2.4Ghz system, and when I decided to upgrade my transmitter the Losi rx's are all still spektrum compatible.

Last edited by simplechamp; 02.19.2010 at 10:21 PM.
   
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bruce750i
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02.25.2010, 02:07 PM

Quote:
Originally Posted by SpeedAssault View Post
uhh , more stuff from china

american money needs to stay here. i dont know any radios that are manufactured in the US but I'm going to at least buy from an american company


I believe part of the reason why Our Economy is horribe is because of things like this.
Well maybe check into this one. Same thing plus $20.00 http://204.186.93.64/Radios-Servos.htm
Also they don't offer the separate $7.00 2.4ghz receivers Like Hk does.


   
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