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Thread: Omni brakes

  1. #1
    Join Date
    Nov 2015
    Posts
    5

    Omni brakes

    Hello all,

    I recently got an omni controller, and now seem to be having brake issues. I used the controller one night in our gtp race and practice and it worked great. The next race night it seemed like the brakes were intermittent. It's now to the point where there is no difference with the brake full on or off. Is there anything I can do at home to test the switch? I do have multimeters and access to a power supply if needed.

    Thanks

  2. #2
    Join Date
    Mar 2005
    Posts
    551
    Is the trigger returning fully to activate the brake contact? Is the contact dirty?
    Last edited by Wallbasher; 03-10-2016 at 10:57 AM.
    Why do I do this to myself?

  3. #3
    Join Date
    Nov 2015
    Posts
    5
    Yes, the trigger does return fully to the brake contact.

    Sent from my SM-G925P using Tapatalk

  4. #4
    Join Date
    Jun 2013
    Location
    Orange County, California
    Posts
    118
    Look at the brake fuse , if any. Use a meter to test the fuse. Look at the solder connection on the board and the alligator clip. Check the wire to see if it is broken in the insulation.
    I am not familiar with the Omni controller but the brake quitting is not normal. What the brake pot? Is it a linear pot or a diode switch? Check the value of the brake switch/pot.

    John Andersen
    DR Racing Products

  5. #5
    Join Date
    Nov 2015
    Posts
    5
    I don't see any fuses on the controller. The connections and overall wire condition looks okay. The only place I could not really tell is where the red wire is spliced and has shrink tubing over it.





  6. #6
    Join Date
    Jun 2006
    Posts
    220
    I used one of these for years. When I hooked it up backwards by mistake, the brake switch would get fried and I would not have any brake no matter the switch position.
    Sounds like you need a new brake switch.
    Support Your Local Raceway !!
    I beat John Cauthen !

  7. #7
    Join Date
    Jun 2002
    Location
    Homeless in Canada
    Posts
    212
    Test the switch. I would try that first.

  8. #8
    Join Date
    Nov 2015
    Posts
    5
    How would i go about testing the switch?

    Sent from my SM-G925P using Tapatalk

  9. #9
    Join Date
    Jun 2002
    Location
    Home of the 2007 USRA Nats and a pretty fast King Track
    Posts
    2,531
    You can eliminate the switch from the circuit by jumpering between the blue and red wires on the Omni board. Doing this should give you full brakes and confirm that contacts and wiring are not to blame for your problems. If you have brakes then the switch would be the next item to change out. One thing you might also try is to move the switch between its settings repeatedly (5 - 10 times) quickly to perhaps clean off contacts in the switch that may be corroded or arc'ed up in the switch.
    There are "Racers" and there are "Talkers".....which one are you?

  10. #10
    Join Date
    Mar 2005
    Posts
    551
    Ramcat larry works on Omni's.
    Why do I do this to myself?

  11. #11
    Join Date
    Nov 2015
    Posts
    5
    Thanks for the replies all, i have been incontact with Larry and plan on sending the controller to him.

    Sent from my SM-G925P using Tapatalk

  12. #12
    Join Date
    Jun 2002
    Location
    St Charles, Illinois, USA
    Posts
    2,319
    Top position of the slide switch should be FULL brakes and the bottom, NO brakes. Middle positions are different partial brakes.
    l.d. kelley, M.A. Ramcatlarry@aol.com

    60 year pin 1959-2019
    Racing slot cars in America
    USRA 2019 member
    IRRA, ISRA/USA, Hardbodies 1/24 &
    1/32 - Great Lakes Slot Car Club
    retired raceway owner 1992-2007
    Omni/Cidex service center

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