lencodrive creeping (HELP)

Discussion in 'PSI Superchargers Tech Questions' started by Pizza Joe, Jun 6, 2011.

  1. Pizza Joe

    Pizza Joe Member

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    I have a blown 540 bbc, trying to leave at 4800 and the car wants to roll with the trasbrake. I have it on a air throtle to limit the butterflies.I just had the VB. updated and put in a new solenoid,also I have a 16V. battery ,any ideas? thanks for any help.
     
    #1
    Pizza Joe, Jun 6, 2011
  2. underby6

    underby6 Active Member

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    You'll have to hold your foot on the brakes. It doesn't seem to matter how new all the guts are, they still creep. You could put a line-loc on there, I just like being in control of it.

    Brandon Booher
    NHRA TAD #34
     
    #2
    underby6, Jun 6, 2011
  3. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    creep

    Is it driving through the transbrake or just 'rocking' forward once you let off the foot brake and on to the tbrake? The roll is from all the 'slack' in the drive line being released once the rear brakes are released.

    It may be a combination of the two, but if it's driving through the transbrake, you're not going to get much life at all out of your transbrake clutch pack. You may be trying to leave too high for your converter stall, thus driving through the transbrake as a result. Leave lower or change the converter.

    If it's just the roll, it's pretty locked down once the slack rolls out.
     
    #3
    Will Hanna, Jun 6, 2011
  4. overkill69

    overkill69 Member

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    creep

    Line lock on the front??? Our bruno did the same thing. Try pushing the car fwd with the transbrake on....it will roll due to the lenco sprags.
    If you have a linelock already you've got lencodrive problems. I think it's easier on the brake if you 2 step in conjunction with the air throttle.Set the boost with the blade opening and then 2 step just below that.
     
    #4
    overkill69, Jun 6, 2011
  5. Danny Humphreys

    Danny Humphreys Member

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    leave rpm

    anything over about 4400-4500 will push, you can hook a line lock up which will help your best bet is to lower your leave rpm to about 4200 also agree with overkill, air throttle by itself is inconsistent, rpm will change when the air gets good put a 2 step on it at 4200 and leave your blades where they're at
     
    #5
    Danny Humphreys, Jun 7, 2011
  6. Pizza Joe

    Pizza Joe Member

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    creeping

    thanks guys for the advice
     
    #6
    Pizza Joe, Jun 7, 2011
  7. Brent

    Brent Member

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    We got the CO2 transbrake update from U.S. Gear on our B&J converter drive and worked great on the weekend. 526 Blown hemi, bumped in on the transbrake and had a .969 60'
     
    #7
    Brent, Jun 8, 2011

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