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RC car frequency change

Discussion in 'Radio and Communications' started by yohanevindra, Aug 4, 2010.

  1. yohanevindra

    yohanevindra New Member

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    Hi guys,

    I'm not sure whether this is the correct place for this question, but thought that since it has something to do with radio it might go here.

    If there are 2 radio cars on the same frequency, I know that there will be inteference and they cant function properly. I'm guessin that each car just has a transmitter and a receiver. Would I be able to change the frequency on my own?

    Also, are there any circuits which can be used to test the frequency and the callibrations?
     
  2. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    Assuming they are 'real' RC model cars, and not toys, then they use plug-in crystals, of different colours - you make sure each car uses a different colour.

    If they are toys, then you can probably only use one at once.
     
  3. yohanevindra

    yohanevindra New Member

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    well...the ones I'm looking at are quite cheap...i would say they're more toys that "real" RC cars..so you dont tihnk I can change it in those? Is it just a simple case of changing the crystal in the receiver and transmitter? would any variations be needed for the coils or the variable resistor?

    also, what are these crystals really called?trying to find them on the electronic store website..
     
  4. dave

    Dave New Member

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  5. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    Toys don't have crystals, they are just crude systems.

    'Real' ones are the kind sold by Tamiya.

    You get them from model shops, not electronic shops - it's a standard item.
     
  6. yohanevindra

    yohanevindra New Member

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    ohhhhh.ok..i saw a few nikko and tamiya's but the ones i was thinkin of buying are much more cheaper..so i guess that's not an option then...

    will check in the model shops then...thanks!
     
  7. yohanevindra

    yohanevindra New Member

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    sorry..another question...would the RC car packaging give it? or can I find it from somewhere in the circuit board?
     
  8. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    For a real model it will, but for a toy probably not - as it's not accurately defined.
     
  9. LTX71CM

    LTX71CM New Member

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    I do own a couple of cheap RC cars that have matching crystals in the receiver and transmitter. Two of the cars are different frequencies, tonight I'll check if they only changed the crystals out or tweaked the circuits also. Like Nigel mentioned the higher end hobby quality RC cars have nice radios and you can buy crystal packs so when you go to a track with dozens of other enthusiast you can all have fun. Here's one such pack Futaba® Crystals
     
  10. Sig239

    Sig239 Member

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    If you haven't bought the cars yet, then they usually have channel numbers or color codes on the packaging so two kids in the family can get the same type of car. Anyways, it will generally have a,b or c on one of the bottom corners of the box.
     
  11. Rocky001

    Rocky001 New Member

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    and how can i increase the range of an rc car plz
     

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