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Thread: choke box

  1. #1
    Join Date
    Aug 2006
    Location
    australia
    Posts
    123

    Question choke box

    I'd like to build myself a new choke will wrapping the the wire around something like a steel tube be better than if i just stuff the wire in the box and will it make a difference if i use steel or aluminum to wrap the wire around. Main use for choke is GP 7 wing cars.
    Thunderdome Slotcar Raceway
    I Got the Sickness
    Home to a very Fast King Track

  2. #2
    Join Date
    Jul 2007
    Location
    Gilbertsville PA
    Posts
    32
    Magnetic steel core

  3. #3
    Join Date
    Aug 2006
    Location
    australia
    Posts
    123

    Smile

    Thanks care to explain why??
    Thunderdome Slotcar Raceway
    I Got the Sickness
    Home to a very Fast King Track

  4. #4
    Join Date
    Jun 2002
    Location
    Northwest Ohio
    Posts
    122
    For slot car use it doesn't make much
    difference...
    As long as the different lenghts of wire
    are coiled the choke will work...
    The only reasons to wrap the wire around
    something would be to get rid of heat or
    for appearance...
    My wire is wrapped around old golf club shafts...

    Mike Blevins

    serfprod@yahoo.com

  5. #5
    Join Date
    Jun 2002
    Location
    Wellington, New Zealand
    Posts
    4,519

    Talking Holy Crap!!

    The first flight to the moon had less wire than that contraption

  6. #6
    Join Date
    May 2006
    Location
    Brisbane ,Australia
    Posts
    66
    Hey Carl I've got an old nine iron only used for toads if you like !!!
    Cheers Mudd
    Team Methane Thunder Alley Raceway Australia
    https://www.facebook.com/Thunderalleyslotcars/

  7. #7
    Join Date
    Aug 2006
    Location
    australia
    Posts
    123

    Talking Holy Smoke

    I got to aggree with zippity Mudd as it turns out i to have a toad 1 wood
    Thunderdome Slotcar Raceway
    I Got the Sickness
    Home to a very Fast King Track

  8. #8
    Join Date
    Jun 2002
    Location
    New Zealand
    Posts
    351

    to the moon blah

    There was no flight to the moon.

    Gill A

  9. #9
    Join Date
    Aug 2006
    Location
    australia
    Posts
    123

    Talking flight to the moon

    If there was no flight how did the man get in the moon
    Thunderdome Slotcar Raceway
    I Got the Sickness
    Home to a very Fast King Track

  10. #10
    Join Date
    Jun 2002
    Location
    Wellington, New Zealand
    Posts
    4,519
    Quote Originally Posted by thunderdome
    If there was no flight how did the man get in the moon

    Don't worry - poor old Gill still believes in Father Christmas, Peter Pan and the Tooth Fairy

  11. #11
    Join Date
    May 2006
    Location
    Brisbane ,Australia
    Posts
    66
    Buzz aldrin & niel armstrong may beg to differ
    Team Methane Thunder Alley Raceway Australia
    https://www.facebook.com/Thunderalleyslotcars/

  12. #12
    Join Date
    Aug 2006
    Location
    australia
    Posts
    123

    Talking Tooth Fairy

    OH i still believe in the tooth fairy but not the other two
    Thunderdome Slotcar Raceway
    I Got the Sickness
    Home to a very Fast King Track

  13. #13
    Join Date
    Jul 2007
    Location
    Gilbertsville PA
    Posts
    32
    I guess I just do not understand what the "Choke" is supposed to do. The idea seems to just add resistance to controller circuit so you do not get full power when the trigger is fully squeezed. Possibly the "Choke" is before the "Blast Relay" so you will get full power. If it was wound around a magnetic core than the power would come on slowly. I do not understand why the trigger is not just squeezed slower unless you never want full power to the motor then you could just uses a length of higher gage wire for a couple of feet.

  14. #14
    Join Date
    Jun 2002
    Location
    Long Island, Ny
    Posts
    747
    Quote Originally Posted by Just_For_Fun
    I guess I just do not understand what the "Choke" is supposed to do. The idea seems to just add resistance to controller circuit so you do not get full power when the trigger is fully squeezed. Possibly the "Choke" is before the "Blast Relay" so you will get full power. If it was wound around a magnetic core than the power would come on slowly. I do not understand why the trigger is not just squeezed slower unless you never want full power to the motor then you could just uses a length of higher gage wire for a couple of feet.
    All the more reason you should not be an electrician.... and not quit your day job
    Anyway, a choke does just what it says, allows slower moment of electrons by adding resistance to the circuit. Never, ever, ever use an iron core or any other type of core with magnetic value when building a choke. Unless you want a good place to keep body pins during power on. As in the old experiment from grade school with a battery, some wire and a nail, wrap the nail with the wire; connect the battery and wahlah, an electrical magnet. Chokes can be made from a variety of electronic devices. furthermore, solid core wire is ok but less practicle then stranded wire, since electrons flow on the outside of the wire in a DC circuit, the more surface area the better and more reliable the choke will be. By adding a core of aluminum to wrap the wire around will offer some cooling, but it is still best to use a fan when and where ever possible in your design. happy building.

    Have fun all.
    Last edited by HurricaneLarry; 09-21-2007 at 08:09 AM.
    There are "Racers" and there are "Romans".....which one are you?

    You're not Paranoid.... People are talking about you....

  15. #15
    Join Date
    Jul 2007
    Location
    Gilbertsville PA
    Posts
    32
    So a "Choke" is a resistor.
    Therefore in this application you never want full power to go to the motor. I assumed you did not want the power to come on to quick causing the tires to spin or the front of the car to lift out of the slot.

    So the application would be when you have to much motor for the track so you never get full power to the motor.

    So what you want to do is add resistance to the controller leads so you would use what slot car people call a choke.

    In the rest of the free world a choke is an "Inductor" which resists the change of voltage. The resistance in low with a constant voltage and higher as the voltage is changing.

    As a side note I work in the electronics world.

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