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Diamond grinding of concrete and lateral stability

Discussion in 'Hangout Lounge' started by jtroto, Feb 10, 2013.

  1. jtroto

    jtroto New Member

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    Location:
    Lafayette, IN
    So, I was riding down Indiana IN-25 yesterday, and I had my first experience with Diamond ground concrete at high speeds, and I thought I was going to die.
    At 60 miles per hour, it felt like my rear wheel had gone flat. Very wobbly, felt like I was slipping sideways. The patches were at most 50 feet long, but in a soft curve, it was enough to make me drift a few feet sideways.
    Has anybody else had this experience, because if so, it might be worthwhile to bring this to the attention of some researchers and/or municipal entities, seeing as how there is no research into lateral stability of diamond ground roadways.
     
  2. Krafty

    Krafty Member

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    I think in any situation its riding according to the conditions, the only time I see grooved road it when they are working on resurfacing the road with fresh tarmac. A necessary evil in the efforts of improving the road system.

    let me know if im wrong but thats just what I see in ontario.
     
  3. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Umm, no, we have grooved pavement over here too.

    While it sounds like OP hit a patch of resurfacing-in-progress grinding, they do cut lateral slits in our concrete freeways.

    Generally, said "rain grooves" loosely follow the direction of travel. I say "loosely" because the word precision does not come into play, they wander all over the place.

    These onerous grooves are why I avoid front tires with a straight continuous center groove. Following the rain grooves is no fun.
     
  4. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Try riding over a steel grate bridge :) They're super fun in the rain. Half of the problem is that street riders aren't used to having a bike move around underneath them much. Just keep your speed reasonable, stay relaxed, and keep on riding normally. Rain grooves aren't fun, but you can get used to riding over them.
     
  5. pjk_xj700

    pjk_xj700 Member

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    Yah, steel grates on the Mackinaw bridge, luckily there is pavement on the outside lane, steel grate on the inner lane, so you can move over.

    wiggle wiggle wiggle. Not a pleasant feel if you're not prepared for it. I ran on it on the old virago just to say I did, but I moved to tarmac soon.

    And, there's expansion joints on the bridge too. They give you a sudden wabble as well. I aim for a point, and hope I center it.
     
  6. Krafty

    Krafty Member

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    wow that sounds like fun.. not .don't have anything like that in my neck of the woods just the road construction surprises and occasionally the only way to get somewhere is on dirt roads.
     
  7. Polock

    Polock Well-Known Member

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    Might want to check your triple tree bearings
     
  8. trgrhappy

    trgrhappy Member

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    Here we have "Chip seal" where they spray tar on the roadway then cover it with chipped rock gravel. They let vehicles drive on it for a few days before sweeping up the excess rock. LOADS of fun when they "forget" the signage. Feels like riding on marbles.
     

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