Relay needed for trans brake on Quick drive or Lenco drive?

Discussion in 'Manton Push Rods Top Alcohol Tech Questions' started by Soldierboy0098, Jul 12, 2017.

  1. Soldierboy0098

    Soldierboy0098 Active Member

    Joined:
    Feb 17, 2006
    Messages:
    1,135
    Likes Received:
    6
    Hi Wondering if I need a relay to activate my trans brake as opposed to just running my little ART micro switch straight to the trans brake? I did it without a relay on my dragster and held it for about 10 seconds and it seemed fine. Thoughts?

    Thanks,
    Trevor Sherwood
     
    #1
  2. jay70cuda

    jay70cuda Member

    Joined:
    Sep 30, 2009
    Messages:
    861
    Likes Received:
    12
    I haven't I installed my quick drive yet but was told just a button is fine. The less wiring the better. I've also heard that Lenco drives and Bruno's are very touchy with wiring.
     
    #2
  3. Mike Canter

    Mike Canter Top Dragster

    Joined:
    Mar 10, 2004
    Messages:
    3,986
    Likes Received:
    53
    If you can get away without one then do it. Regular relays will slow down your reaction time and are not consistent. If you have to have one then use Shannon Davis solid state on. Moretraction.com
     
    #3
  4. Jason Green

    Jason Green Member

    Joined:
    Feb 20, 2016
    Messages:
    55
    Likes Received:
    3
    I agree with Mike, if you can run without it then do, just keep a spare button because sooner or later the contacts will get burnt and that will cause you some headache.
     
    #4
  5. hotrod796

    hotrod796 New Member

    Joined:
    Jun 29, 2007
    Messages:
    24
    Likes Received:
    0
    I use a switch only for a LencoDrive, I believe it's made by Dedenbear. As long as it's rated for 25 amps you're good.
     
    #5
  6. superpro453

    superpro453 Member

    Joined:
    May 12, 2007
    Messages:
    90
    Likes Received:
    0
    Check the voltage drop at the transmission end. If it drops below the manufacturer's recommendation, you might need to run a relay (we had to on our Lencodrive).
     
    #6
  7. Mike Canter

    Mike Canter Top Dragster

    Joined:
    Mar 10, 2004
    Messages:
    3,986
    Likes Received:
    53
    Use a larger gauge wire if the voltage drops too much. Stay away from a relay unless you love inconsistent reaction times
     
    #7
  8. jay70cuda

    jay70cuda Member

    Joined:
    Sep 30, 2009
    Messages:
    861
    Likes Received:
    12
    What he just said^^^^^^^^^^!! Relays are like hot girl friends. Great at first then nothing but trouble in the end lol
     
    #8
  9. superpro453

    superpro453 Member

    Joined:
    May 12, 2007
    Messages:
    90
    Likes Received:
    0
    We didn't have anything larger than 10 gauge to hand (unless you count the battery leads)... but as I footbrake the car from idle, I guess I'm not bothered about consistency in the TB - more concerned that the car would creep with the TB on - not good when you use the TB to go from forward->reverse or back (we've broken more than enough reversers).
     
    #9

Share This Page