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  1. cmc

    Roll-ins

    Coming back to this topic after many years, and having ridden quite a few more spots.... I'm of the opinion that a longer flatter roll-in that you can actually crank down produces the overall fastest speed. This is an example of a 12 foot tall 60 degree roll-in with minimal transition at the...
  2. cmc

    Roll-ins

    This is a roll-in for a dirt jump line at Highland Bike Park. Note how the roll-in platform is much taller than the jump.
  3. cmc

    My idea for a new style of bike

    BUMP
  4. cmc

    Roll-ins

    Some people do a lot to get some elevation!
  5. cmc

    mtb magazine not understanding DJ

    I know this review of the Transition BLT is a few years old, but I just came across it and thought the "traditional mountain bike perspective" of a DJ-MTB with BMX aspects was interesting. https://mbaction.com/home-page/bike-test-transition-blt BIKE TEST: TRANSITION BLT July 14, 2015 The...
  6. cmc

    BB hight, top tubes, bar hight, and yur lower back?

    Time to start doing physical therapy, yoga, etc. And consider riding bigger wheels--not that you have to, just that there's only so tall your 20" setup can be (10" bars, spacers, top load stem), where it starts to wack out the geometry, and it makes more sense to have a proportionally bigger...
  7. cmc

    OldSchool Pics (History Lesson Kiddos)

    Earliest pic I've seen of someone riding 24"s on vert.
  8. cmc

    New city-sponsored jumps

    How's this place doing? Still running strong?
  9. cmc

    Roll-ins

    Prepping to set BMX records - Dirt Dogs Ep 1
  10. cmc

    Roll-ins

  11. cmc

    Roll-ins

    Highland MTB Park, NH note how much taller the roll-in is that the first jump. (it's in the back of the pic and you can see the rider standing on it). you can't have a roll-in that is only 6 feet tall and expect for it to generate enough speed without cranking.
  12. cmc

    25" standard.

    I was thinking about this again because of another thread. So, a 26" MTB rim has a beat seat diameter of 559mm. A true 25"er (imagining the same height of tires) would therefore be 559mm - 25.4mm = 533.6mm. http://www.sheldonbrown.com/tire-sizing.html The traditional sizing systems are...
  13. cmc

    FLY Bikes euro-to-spanish BB conversion cups!

    awesome. i wonder if these still exist....
  14. cmc

    Roll-ins

    Pretty cool little physics motion graphic about inclined planes: http://zonalandeducation.com/mstm/physics/mechanics/forces/inclinedPlane/fourSecond/fourSecondInclinedPlaneJoyride.html
  15. cmc

    4" rise 2-piece bmx bars..........?

    I'm stoked that Matt at STOUT Bikes has gotten into 4 piece 4" rise bars.
  16. cmc

    Better frame measurement: "Front End Length"

    Bump!
  17. cmc

    Roll-ins

    The rollercoaster thing has got me thinking. Maybe the Mega Ramp should use a parabolic roll-in, instead of a circular-tranny--flat-bank--circular-tranny like they have always done.
  18. cmc

    Roll-ins

    Saw this one over on pinkbike "Shane's house" http://www.pinkbike.com/photo/12759875/ One of the comments says the roll-in is 16 feet tall.
  19. cmc

    the redesign of this site a while back. . . . .

    I know it's old news. But, the re-design of this site a while back (a year or two ago or more!?!?) makes me hate it. I used to post regularly, with quality posts. Ridemonkey used to be better than pinkbike and mtbr. Now it's not. I wonder how many other people left the site because of...
  20. cmc

    The longest dj frame

    The Black Market Edit 1 is available in a 23"tt (actual, measured center to center... not "effective") . http://blackmarketbikes.com/index.php?page=shop.product_details&flypage=bmb_flypage.tpl&product_id=129&category_id=1&option=com_virtuemart&Itemid=7&vmcchk=1&Itemid=7
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