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Thread: CLEARANCE CHECK - RUBICAT Flex Test with Her New 40" Cooper STT Pros

  1. #1
    Administrator wayoflife's Avatar
    Join Date
    Oct 2011
    Carson City, NV

    CLEARANCE CHECK - RUBICAT Flex Test with Her New 40" Cooper STT Pros

    After doing some initial testing of Rubicat with her new 40x13.50R17 Cooper Discoverer STT Pros, Cindy and I realized that a considerable amount of trimming would be needed if we wanted to keep her stance as low as we had it. To see pics of what we did, click on the link below:

    HEMMED the SEAMS - RUBICAT Trimmed to Fit 40's

    Knowing that we may not have hemmed her seams up high enough, we decided to take her down the street to do some flex tests and see if her tires would now clear or if she still need some more trimming. Here are a few shots we took from the laboratory.

    Twisted Up Test #1
    Front driver side up and rear passenger side up - view from the front.

    So far, the fenders clear and I see no signs of rubbing up front.

    Time to take a look at the rear.

    Good stuff and so far, the fenders appear to clear.

    The forward half of the rear fender well seems to have been adequately hemmed.

    But wait - it appears we still have a bit of contact in on the rear half. It always cracks me up whenever I hear guys go on and on about how they want to push their axle back because of how it "looks" at ride height. They assume that it needs to be centered but fail to understand that the axle travels in an arc and as it does, it'll move toward the back. Anyway, guess I need to do a bit more trimming here.

    Taking a quick look underneath the rear. Here you can see just how much our sway bar is limiting our flex - pay no attention to how taught the limiting strap is.

    Now this was a bit interesting to see. On Moby, I've installed shaft collars to prevent the factory rear sway bar from traveling side to side but I haven't installed any on Rubicat. During our flex testing, her sway bar shifted over enough to cause the passenger side arm to get caught on the limiting strap frame mount bolt. This is something I will need to address.

    Giving the rear end another look prior to moving on.

    Twisted Up Test #2
    Front passenger side up and rear driver side up - view from the front.

    Just when it looked like all was good, I noticed we had a bit of contact on the passenger side pinch seam next to the grill.

    Moving to the back.

    With the exception of the rear half of the fender well needing a bit of trimming just like the passenger side, all checked out here.

    And those are the lab results from our clearance check of Rubicat with her new 40" Cooper STT Pros. As you have seen, a bit more trimming is needed here and there but for the most part, I think we're almost there.

  2. #2
    Living the WAYALIFE MTG's Avatar
    Join Date
    Jan 2012
    Reno eNVy

    Judging by what is/is not trimmed on the new jeep, I think I need to do this too. Curious about the shaft collars...can you post a pic?

  3. #3
    Hooked IBSMSHN's Avatar
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    Jun 2016
    San Diego Ca.
    Wow! That's some Awesome FLEX

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  4. #4
    Nothing but a Thing ob_tj's Avatar
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    Dec 2015
    NorCal Stanislaus county
    Wow.. now that's what you call flex! It's awesome that Rubicat is on 40s now!

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  5. #5
    Been Around the Block JK07's Avatar
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    Feb 2013
    Very nice!

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    '07 JKUR Red Rock

  6. #6
    Join Date
    Oct 2011
    Patterson, CA
    Very cool. I love the low center of gravity. While your suspension is a touch different than mine (lolol), I went back to my stock suspension with the 35's (not quite 40's, but big enough) and some flat fenders, and it runs so amazing again. Maybe some day I'll be able to throw some 40's under mine, but it's gonna be a bit lol, lovin Rubicat's progression!

  7. #7
    Nothing but a Thing Judesign's Avatar
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    Mar 2015
    San antonio
    Very cool. Figured you'd need more trimming with that amount of flex and lower cog. Looks really good

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  8. #8
    Old Timer Andy5160's Avatar
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    May 2016
    New York
    Looking sharp Eddie!!!!!!!!

    I am sure you will trim as needed to give that nice jeep even more factory look

  9. #9
    Meme King WJCO's Avatar
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    Sep 2015
    Great pics. Crazy how the rear sway bar did that.
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  10. #10
    Guy with a Red 2-Door cozdude's Avatar
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    Mar 2013
    West Chester, PA
    Quote Originally Posted by WJCO View Post
    Great pics. Crazy how the rear sway bar did that.
    It's crazy to see the amount of flex out of the rear sway bar! So much for it limiting flex lol
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