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Old 02-17-2009, 12:45 AM   #1
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Unhappy mugen seiki mrx3. need help with radio!

hi all! i just bought a Mugen Seiki Mrx3 for 200 dollars, i hope i didn't get ripped off. it came with the lynx 3d radio and the mtx starter box, I charged everything last night and started it up this morning, the car started up fine and it was fasttttt as hell. the only problem i have is the Radio, it's only controlable within 8 foot range! Is it the battery on both the radio/car need to be replaced? the battery on the car seem to be fine to me, and on the radio it's said 13.1v2 when i turn it on after charged. Is there anything i can do to fix or test? or do i have to purchase a new radio? Please help!
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Old 02-17-2009, 08:34 AM   #2
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First thing I would have to look at is the receiver antenna.
Maybe its been shortened or has a break in it.
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Old 02-17-2009, 09:07 AM   #3
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If anything need to be replace it would be the receiver or receiver antennathat's what I did replace my antenna, after that everything was fine...you should be ok...
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Old 02-17-2009, 10:37 AM   #4
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As the others mentioned, check the receiver wire for kinks. Its rare, but it could be damaged inside the sheathing.

You should probably install a fail safe on the car until you figure out what the problem is. A cheaper alternative to a fail safe is to use a throttle return spring.

There are a lot of people who like that radio, but instead of buying a new receiver, you may opt to borrow one to work out the bugs.
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Old 02-17-2009, 11:16 AM   #5
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ok i forgot to mention that the antenna on the radio is broken, the tip of the antenna is missing about i'd guess 5 inches or less. is it the problem?
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Old 02-17-2009, 11:28 AM   #6
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The missing endtip is not the problem, it would be nice to have an extra receiver to check it.

But 13.1 volt in the transmitter, it seems there is a 3S lipo pack inside. Be sure you have the right charger if I am right. You do not want to burn down your house....
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Old 02-18-2009, 10:47 AM   #7
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A running MRX3 for $200?? Man you got ripped! I'll send ya a $100 for the car just to save you the ebarasment. Seriously though, you might want to try a different set of crystals and see if that takes care of it. You can try some Futaba crystals if you have any laying around.
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Old 02-18-2009, 03:05 PM   #8
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Five inches of wire missing is a problem. Replace it with the correct length wire. A crystal problem will not affect range. (distance)
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Old 02-18-2009, 03:17 PM   #9
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Or you could always just upgrade to a nice remote with receivers if your going to stick with the hobby.

-Ant.
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Old 02-18-2009, 05:24 PM   #10
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Quote:
Originally Posted by Wanabrc View Post
A running MRX3 for $200?? Man you got ripped! I'll send ya a $100 for the car just to save you the ebarasment. Seriously though, you might want to try a different set of crystals and see if that takes care of it. You can try some Futaba crystals if you have any laying around.
I don't know about that, sounds like he got a motor, radio, starter box etc. with it. If so, not a bad deal if he can fix the radio problem.
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Old 02-19-2009, 01:07 AM   #11
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Quote:
Originally Posted by wingracer View Post
I don't know about that, sounds like he got a motor, radio, starter box etc. with it. If so, not a bad deal if he can fix the radio problem.
That was sarcasm. He got a very good deal.
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Old 02-19-2009, 01:35 PM   #12
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thanks all for the reply, i've been thinking to get a new radio and reciever, is the dx3r is a good choice? kind of pricey but i think it's a good radio.
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Old 02-19-2009, 01:45 PM   #13
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Quote:
Originally Posted by vuanhquoc View Post
thanks all for the reply, i've been thinking to get a new radio and reciever, is the dx3r is a good choice? kind of pricey but i think it's a good radio.
Yes. I prefer the DX3S, that is what I am using now and I love it. Telemetry is awesome.

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Old 02-19-2009, 01:48 PM   #14
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I agree the dx3s is a good radio
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