lencodrive

Discussion in 'PSI Superchargers Tech Questions' started by CjRedden, Jul 15, 2015.

  1. CjRedden

    CjRedden Member

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    I just put a 3 speed lenco drive in my car from a powerglide. I am with the understanding i need to hit the transbrake button to shift into reverse or forward? I have the tim mccamis shifter and reverser. Also with the reverser, which way is forward and which is reverse? Can anyone go through there procedure from burnout to the return road on what they do? I also hear that in order to switch the reverser i need to make sure my foot is off the break pedal?
     
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  2. Mike Canter

    Mike Canter Top Dragster
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    The problem with any of these transbrake unit is they have to be absolutely at a standstill with the transbrake locked to move from forward to reverse or you will burn up the band on the transbrake. Not sure about why you say your foot cannot be on the brake when going to reverse. Your transbrake is locked and nothing is moving so there should be a reason to be on the brake but you need to be on the brake when you hit the transbrake. Once the transbrake is on then you can take your foot off the brake. My guess would be that it is easier for the reverse gear to mesh if your foot is not on the brake and less shock to the reverser section.
     
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  3. CjRedden

    CjRedden Member

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    Are you saying it is not necessary to use the transbrake to go from forward to neutral or neutral to reverse?
     
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  4. Mike Canter

    Mike Canter Top Dragster
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    Nope, didn't say that. The car has to be at an absolute standstill and then apply the transbrake while moving from forward to reverse or reverse to forward. If the car moves while applying the transbrake you will burn up the clutches. With the transbrake applied then you have stopped the loading on the reverser section so the slider gear can move.
     
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  5. quick cut

    quick cut Member

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    Lenco Drive

    As mike said
    You need to stop every thing to a stand still with the brake push the tranz brake button, let brakes off, select netual forward or reverse,
    If it dose not go in repeat. It will not burn the clutches you will break the reverser, as it will jump out, if not all the way in them SMASH. BROKEN
    Also move the tranz brake away far enough that you do not reactorvate when changing gears when going down the track.
    if you do Then you will burn the tranz brake up & the pump etc
    Hope this helps

    You need to Baby this & be carefully & it will work well
     
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  6. CjRedden

    CjRedden Member

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    Thank you for your input. So next question. After the run. Shall i keep it in high gear until i come to a stop in high gear?
     
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  7. quick cut

    quick cut Member

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    Lenco Drive

    Yes,
    only put in neutral when car is getting pushed off track or put in neutral before towing back on the return road
     
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  8. CjRedden

    CjRedden Member

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    so ive made about a dozen runs on the new lencodrive. I seem to be chirping the reverser on the initial startup before the burnout. it seems to grind just enough to make noise which I fear if it keeps going on it will no longer be usable. during warmups on the pro jacks, and after the burnout going into reverse and going back into forward to stage have been fine. just the first initial startup under the tower. I have the idle about 1700. also, I feel as I should buy a spare reverser in the even this one goes away. are they easy to change? should I have a spare one in the trailer?
     
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  9. quick cut

    quick cut Member

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    Lenco Drive

    Yes you should. as every one at the track has spares. But NOT for the late model lenco drive.
    It is easy to change, drop the oil from the reverser & your second pack.
    And pull it off just be carefull your second gear pack dose not come out to if it dose there is a bearing a the front that will drop.
    After breaking one or two it will come easy to repair
     
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  10. superpro453

    superpro453 Member

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    Don't see why it's grinding on startup. Perhaps, you should check the adjustment on the shifter cable...
     
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  11. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    As mentioned above, check the adjustment on the shifter.

    Never force it in. Just put it in nice and easy. Just have to be patient and toggle it if it doesn't go right in.

    In the shutdown I recommend dumping air to one or both shifters to put the trans back in low and let it overrun the converter sprag instead of dragging the motor down. I wouldn't try to put it in neutral until you get it stopped.

    I would carry a spare reverser slider, ring gear and pins for the fork.
     
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  12. superpro453

    superpro453 Member

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    I'd be hesitant to give too much advice, as according to Mick Snyder we've broken more reversers in the past few years than anyone else (not a record that I'm happy to have), despite doing all that has been recommended above.
    We carry several new and/or (re)built planetary sets (when we haven't completely destroyed the carrier), annular ring gears, and thrust bearings, and at least one sun gear. We've never had an issue with the selector or the forks - but now we know that Will carries spares for them, we probably have something else to break :)
    We also keep spare filters and a spare transbrake clutch pack.

    Martyn
    Another Small Fortune Racing
     
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