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Thread: Rear end ?

  1. #1
    Join Date
    Dec 2007
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    127

    Default Rear end ?

    So, just doing some random thinking, with late models and mods all doing the heavy left rear
    thing, do you think there would be a benefit to weighting the lr axle on a stock car? Always wondered
    if this would work with the stock style rear suspension.

    Curt Drake
    #55x

  2. #2
    Join Date
    Jul 2007
    Posts
    3,138

    Default

    sure, your turning left

    just put some water in your left rear tire
    My ignore list... copy pasted. Which means if your on here I DONT see your posts.

    ALLDIRT a1driver a25rjr balljoint balljoint_ calverton carowner73 CIRF Clayton_Wetter decrate61 dirtdobber45 dirtman007 frontrunner gator 49 LITE--OUT Raceready

  3. #3
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    ha , have you ever tried that SCD ? cause i saw some one try that on an old bomber one time , at speed that thing was having a fit....

  4. #4
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    Mar 2017
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    Default

    Race tech constantly moves down from the higher classes to the lower classes. A heavy left rear should make a car loose of the throttle, and also it should make a car tighter on the gas. This is assuming that the cars rear suspension has adequate rear suspension to allow the left rear to drop enough when needed. In a stock body class using stop type metric suspension, you need to do things to help the suspension travel more like a Late Model would. This would include doing things to allow freedom of movement in the rear suspension. The NeSmith stock cars have been doing non conventional things for a long time, like rear control arms with non stock suspension swivels that allow a greater range of motion.

  5. #5
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    Also, be aware that when you allow the left rear to drop like a late model would, you will probably have too soften the rf spring rate, and you will also end up needing shocks that will tie the rf down, and u will most likely benefit from a lr holdup shock. Remember, that when the left rear drops, the rf most go down, or your car will build a tremendous amount of dynamic wedge, and this will make the car really, really tight when on the throttle, and if the rf bottoms out on throttle application, the car will push up the track at the moment when the rf bottoms out. This is why many cars are running on bump stops, and figuring out the correct rf spring rate/bump stop setting is largely a matter of experimentation. This setup is very common in all classes these days. Many of the late model guys are buying super expensive chassis these days, and they are paying the money mostly to get setup help from high level setup men. For a team with a limited budget, there is no replacement for somebody who can watch the car go around the track and give feedback. I have seen 10+ year old late model chassis run very competitively simply because they had some one on the team who truly understood what the car needed.
    Last edited by LRtireCHANGER; 06-24-2019 at 10:04 PM.

  6. #6
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    Jul 2007
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    3,138

    Default

    Quote Originally Posted by fastford View Post
    ha , have you ever tried that SCD ? cause i saw some one try that on an old bomber one time , at speed that thing was having a fit....
    It wasnt full enough then... It needs to be to the top of the rim at a minimum.
    My ignore list... copy pasted. Which means if your on here I DONT see your posts.

    ALLDIRT a1driver a25rjr balljoint balljoint_ calverton carowner73 CIRF Clayton_Wetter decrate61 dirtdobber45 dirtman007 frontrunner gator 49 LITE--OUT Raceready

  7. #7
    Join Date
    Oct 2018
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    482

    Default

    Quote Originally Posted by fastford View Post
    ha , have you ever tried that SCD ? cause i saw some one try that on an old bomber one time , at speed that thing was having a fit....
    You might get that to work with a very full radial tire. Bias ply, no way.

  8. #8
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    Default

    i dont know what was on that bomber but by the flag stand , the whole rear end was hopping of the ground .....

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