AboutMatt Coia Expertise I can answer questions about r/c cars and trucks including on-road and off-road vehicles. I am knowledgeable in both nitro and electric powered vehicles. I can also handle questions about repair and maintenance of any wheeled vehicle.
Experience I have owned and raced many different kinds of vehicles. I also help administer a busy website devoted to the r/c hobby. I have done repair work for hobbyshops in the past and have helped many beginners get started in the hobby. I also operate a middle school r/c club.
Organizations ROAR, Mensa, NSTA
Publications www.wnyrcinfo.com
Education/Credentials I am a certified Physics teacher now teaching middle school science and Physics in New York State.
Question QUESTION: i have 1/10 scale 4wd battery powered race truck. When I turn on my controler it goes crazy(forward,backward,wheels turning)out of control. any advise would be great. im lost!
ANSWER: Hi Chip,
Some more info on the brand/model of truck you have would be helpful. Common causes for this behavior would be: loose crystal in controller or receiver, incorrect crystal in controller or receiver, outside interference from another source, or low batteries in controller.
Good luck.
Matt
---------- FOLLOW-UP ----------
QUESTION: Matt, I checked the crystals they seem to be ok. the truck is a "speedy cobra MT-X4" the crystals in it come with the truck, could they be bad? one is a zgc 26 mhz and other a 27. batteries are new. Im new at this hobby. Starting to think i got the wrong truck. Thanks for your help, Chip
Answer Hey Chip,
Has the truck ever worked properly? As far as I know the crystals should be identical other than one saying "transmitter" and the other "receiver". If you really think you'd like to get into the r/c hobby, I would look at finding a truck that offers better features, a solid reputation, and easy to get replacement parts. You should be able to find some decent ones for not much more than you spent on the "Speedy Cobra".
