3-step?

Discussion in 'PSI Superchargers Tech Questions' started by CjRedden, Apr 24, 2015.

  1. CjRedden

    CjRedden Member

    Joined:
    Jan 16, 2010
    Messages:
    153
    Likes Received:
    0
    What is your take on using a 3step as a limit for the burnout? And what rpm? Top sportsman nova 526 cu in 14-71 hi helix 4.29 gear 34.5x17 tire.
     
    #1
  2. TADHemiracer

    TADHemiracer Member

    Joined:
    Dec 9, 2010
    Messages:
    359
    Likes Received:
    14
    3 Step

    I have my 8973 set up on a 3 step use. My burn out rpm is 6000. Launch rpm on another step and Max rpm on the 3rd step.
     
    #2
  3. JimW

    JimW Member

    Joined:
    Apr 23, 2012
    Messages:
    30
    Likes Received:
    0
    If a driver cant control the burn out RPM on a top sportsman car ( or a higher class car, fuel cars the exception ) I wont strap him in.......

    Jim
     
    #3
  4. TADHemiracer

    TADHemiracer Member

    Joined:
    Dec 9, 2010
    Messages:
    359
    Likes Received:
    14
    3 Step

    Agreed. If the driver does not have that much control then maybe he is not able to properly handle the car. In MY case, it is one less thing I have to handle when I am in the car. All I need to do is to press the Burn Out button and let her rip. There is a lot going on already, less is better.
    JMHO
     
    #4
  5. CjRedden

    CjRedden Member

    Joined:
    Jan 16, 2010
    Messages:
    153
    Likes Received:
    0
    Its not a matter of being able to handle it or not. It is one less thing i want to have to focus on. There is a lot going on and the less i have to focus on the better.
     
    #5
  6. jody stroud

    jody stroud ZOMBIE Top Dragster

    Joined:
    Sep 3, 2007
    Messages:
    854
    Likes Received:
    15
    I have one on my car, keep it set about 500 rpms higher than my actual burn out rpm. Just in case something happens, may keep me from blowing up motor. Right foot is the normal limiter.
     
    #6
  7. jay70cuda

    jay70cuda Well-Known Member

    Joined:
    Sep 30, 2009
    Messages:
    1,139
    Likes Received:
    35
    Why don't you put a few throttle springs on there to get used to it. That 3 step setup for you avg track would be fine but go to a killer track and you'll be lucky chirp the tires. Never drive a blower car in my life when I bought mine. By the third try I was fine. And you also learn how good a track is by doing a controlled foot burnout. Crappy track will spike up quickly and car will Hardly move. Great track the car will lug down and lunge forward from all the bite
     
    #7
  8. Bjs344

    Bjs344 Member

    Joined:
    Sep 10, 2013
    Messages:
    355
    Likes Received:
    24
    I just use the high side;). I don't think you said what motor. My BBC likes to be 8k in the burnout and the chip is at 8400 or 8500 on the grid. The grid seems to catch it a little below that in the burnout, I guess because of the quick accel rate if I get a little over aggressive.
     
    #8
  9. Randy G.

    Randy G. Top Alcohol

    Joined:
    Jun 9, 2003
    Messages:
    1,902
    Likes Received:
    36
    Are the new generation of drivers becoming so tone deaf they have to take one of the funnest parts of driving a high horsepower race car and dumbing it down?
     
    #9
  10. CjRedden

    CjRedden Member

    Joined:
    Jan 16, 2010
    Messages:
    153
    Likes Received:
    0
    Well Randy, that's one way you may look at it. I like to look at it as I am a bracket racer and want to keep things as consistent at possible for one. Two, I have a very low budget and want to keep things as safe as possible. I don't have the many many years of experience that most people do dealing with these cars. You can call me inexperienced or some may claim I shouldn't be driving a car if I cant handle the burnout. But in my opinion, im doing something I love to do, its my passion. You can say whatever you want. but what other people say is not gonna stop me from doing what I want.
     
    #10
  11. Randy G.

    Randy G. Top Alcohol

    Joined:
    Jun 9, 2003
    Messages:
    1,902
    Likes Received:
    36
    You can do what you want, it's just not going to help you in the long run. I bracket raced for many years when I was a kid and we had no electronics whatsoever. We did just fine. In fact, we look at those years as the good ol' days because you actually had to drive the car and hit the number without turning knobs on the dash and depending on "stuff" to make you look better than you really are.
     
    #11
  12. AFC357

    AFC357 New Member

    Joined:
    Nov 19, 2007
    Messages:
    986
    Likes Received:
    0
    AMEN Randy! I was going to chime in and say I prefer me right foot as the limiter. Some tracks require a tick more throttle than others and so on. Put a "driver" behind the wheel, not a Video Game expert:rolleyes:
     
    #12
  13. Blownalky

    Blownalky Top Sportsman

    Joined:
    May 9, 2005
    Messages:
    826
    Likes Received:
    8
    I've tried it with the rev limiter in and off. I leave it off on the burnout now for the reasons above cited; you need to have some more power at some tracks to keep the car from hooking so you can create the same length burnout each time for consistency.

    I'd recommend you put it on at first. After you get used to it, bump up the RPM of the rev limiter in the burnout and start controlling it with your foot. I'm pretty confident after a couple times out you will have the confidence that you will be in control and not zing your motor.
     
    #13
    Last edited: Apr 27, 2015
  14. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
    Staff Member

    Joined:
    May 6, 2003
    Messages:
    6,706
    Likes Received:
    132
    burnout and bracket racing

    what i have learned from racing Top Dragster over the past year or so is doing the exact same burnout every time is critical to having the same trans fluid temp when you stage. i had my driver learn how to do a burnout by feel and sound at first. he came from a nitrous car where it was normal to use a three step and just mat it. not to mention even if you do a manual burnout with a carb motor you give it a lot more throttle than you do a blown motor. we ended up putting a mechanical burnout stop on the linkage. that's a little easier to do with a dragster than a door car.

    that said i'm not a fan of laying on the rev limiter. David Reher did a piece in ND a few years back talking about harmonics and the affect on your motor. If your motor has a bad harmonic in a certain rpm range and you limit it within that range, you could really tear alot of parts up.

    if you could put a linkage stop where a crew member can reach it, I would go that route.
     
    #14

Share This Page