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wood transitions

Discussion in 'BMX & Dirt Jumping' started by colton, Oct 22, 2007.

  1. colton

    colton Monkey

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    the only difference in the drawing than what i am actually going to build is that the jump is 8' wide as opposed to 6' wide like i said
     

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  2. 46chief

    46chief Monkey

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    Don't see how that would hold together very long,. Aside from the plywood support needing fixed, it looks like it needs to have the bottom framed out and some diagonals to stiffen it up.

     
  3. opjones

    opjones Monkey

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    Once you put the top sheet on it'll hold together just fine.
     
  4. muddy beast

    muddy beast Turbo Monkey

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    I've had the jump for over a year...and havent had any opprotunaties to hit it yet...(damn thing is to heavy for me to move by myself, and all my ride buddies live far away).

    But, no it holds up. I put plywood over the top and put 3 screws in each brace and I put cross braces to each brace already in. Trust me, that thing isnt going anywhere with 3/4th inch plywood on each side and the braces at the end of the ramp (you cant see, but its a genius design my friends dad came up with, using braces and pressure it keeps the whole thing solid).
     
  5. colton

    colton Monkey

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    I didnt feel like making another thread for this topic. What i want to know is, if i were to make a curved wallride thing, kind of like a bowl, that did almost a 180 degree turn, is there a good radius that you would stick to the wall well, but still be in control?
    like so

    There would be sort of like a dirt bank/berm on the lower portion of it with about 4 feet of wood above this (or more). The purpose of this is to make a tight berm at the end of a dirt jump trail to shoot you off in the opposite direction to hit up another dirt jump. It is all in my backyard, so i have limited space.:disgust1:
     
  6. colton

    colton Monkey

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    heres a vid of exactly what i was interested in making.




    Also, would it be smarter/cheaper to build this out of wood beams/bracing, or should i find a place to roll steel pipes for the skeleton?

     
  7. WODIE

    WODIE Monkey

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    Hey colton, apparently noone ever responded to your question. I would make it out of wood so that it would be easier to put your plywood in place. Even using steel poles you would have flex. The best way to make it with wood would probably be to use 4x4s as posts and put them at least 2 feet in the ground if you cant get as much as 3 feet. then you would probably want to put some braces angled down from the top of your wall into the ground sticking about 4-5 feet out from the base of the wall. that should make it pretty sturdy. We kind of made our wallride like this in Clemson but its not nearly as tight of a radius. We, being resourceful college students, went dumpster diving and found some a frame sections from housing construction sites (all scraps of course but still in a nice sturdy angle) and we actually had to put them up on some 2x4s to make them the height we needed. we've got a mess of braces on the back to hold it steady. Its been holding up for a year so far.
     
  8. FreakNuNu

    FreakNuNu Chimp

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    dude what program did he use to make the diagram
     
  9. colton

    colton Monkey

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    for the wallride, just used google sketchup
     
  10. colton

    colton Monkey

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    All of that stuff is already there except for the wallride. Many changes will also come such as: Adding 2 feet to top of roll in, making main jump longer/wider/taller, turning berm into wallride, trail after wallride, making roller longer/wider, bowl after roller deeper, and making the newb jump taller/wider.

    Tell me what you think
     
  11. tjc

    tjc Chimp

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    Wow, and you said you already have part of this done? Anyway's it's great to me, idk mabey you could find a spot for a rail or somthing? Just a suggestion, but it's still great.
     
  12. colton

    colton Monkey

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    ya, i already have the roll in, the table top and the roller done. I also have a tiny trick jump at the end like shown in the pic, but it is pretty useless.
    The renovations to come are:
    Making the roll in 2' taller
    Table top ~ 8" taller, 2' wider, and 2' longer
    Making bowl between jump and berm deeper and twice as wide
    Designing and building the wall ride
    Making roller 3X as wide and a little longer
    Bowl after roller about 1'6" deeper
    and making "trick jump much taller"

    So in other words, the basic outline of what is posted above is already there. I just want to make this place sick and be able to ride it for a couple of years before graduating High School. All of this work has been done and will be done by hand with a trusty shovel. It has and will mostly will be done by myself. I am just glad i have pretty awesome parents that let me do stuff like this in their backyard:clapping::monkeydance:
     
  13. Castle

    Castle Turbo Monkey

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    man that wall ride looks fun! might have to build one
     
  14. colton

    colton Monkey

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    I have been doing tons of digging lately and just this past weekend began getting wood and making cuts for the wallride. I will post pictures once i actually start the building process.:picsstfu:
     
  15. colton

    colton Monkey

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    First part of the wallride is under way. Now i have to cut the top radius, put in rear support braces, and then screw in 72 four foot long 2X4's and it will be good to go.



     
  16. Defenestrated

    Defenestrated Turbo Monkey

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    does anyone have a good radius recommendation (using a board compass) for a mini ramp transition built for 24" bikes more than skating or bmx?

    EDIT: The ramp transition in question will be 38" tall
     
  17. aeffertz

    aeffertz Monkey

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    this is awesome.
    any pics of the whole shebang?
     
  18. colton

    colton Monkey

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    ya, its close to being finished. This goes really slow with only one person working on it. I will post up picks in a while.:picsstfu:
     
  19. dump

    dump Turbo Monkey

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    very nice. You might want to think about a setup that works both directions (for the wallride)
     
  20. aeffertz

    aeffertz Monkey

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    Here's a link to his updates. He started a new thread....
    Clicky.
     
  21. VPFreerider

    VPFreerider Chimp

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  22. cmc

    cmc Turbo Monkey

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  23. East Bay Rich

    East Bay Rich Monkey

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  24. Beast

    Beast Turbo Monkey

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    #64 -   Feb 24, 2009
    Last edited: Feb 24, 2009
  25. COB

    COB Chimp

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    I wish I knew about this before I built mine
     
  26. Jeromev

    Jeromev Chimp

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    No pics of the finished product?
     
  27. cmc

    cmc Turbo Monkey

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    what would yall think of this step up box jump ?

    clearly, a lot of the dimensions could be tweaked a bit.... but in general . . a box jump where the deck is not flat, but slants up, enabling you to have a big radius landing that has roughly the same steepness as the launch.

    (i say the same steepness b/c 5.5 divided by 9 is close to the same as 9 divided by 14.)



    Alternate version without the rounded corner:



    Version 3 . . . 9' radius on the landing as well, except flat extension up to step up corner:
     
    #67 -   Sep 9, 2009
    Last edited: Sep 9, 2009
  28. DIRT-HQ

    DIRT-HQ Monkey

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  29. antalmjah

    antalmjah Chimp

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    Does anyone know some good ratios when using mesquite? Living in the southwest I have an abundance of this wood...its right in my back yard But from what I understand it is easy to over do it...
     
  30. sixgun_sound

    sixgun_sound Monkey

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    The best way to use mesquite is to get a smoker and make beef jerky with it.
     
  31. opjones

    opjones Monkey

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    mmm beef jerky
     
  32. cmc

    cmc Turbo Monkey

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    heh heh, found real life example of my drawing....

     
  33. cmc

    cmc Turbo Monkey

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  34. cmc

    cmc Turbo Monkey

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    Maybe wood landing transitions should be cut on a parabolic path . . . instead of circular radius or elliptical radius:

    Look at your trajectory.


    Then flip it upside down, so that the landing is "catching" the rider at the same angle they are entering the earth.....





     
    #74 -   Aug 17, 2010
    Last edited: Jun 6, 2011
  35. cmc

    cmc Turbo Monkey

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    smaller version .....

     
  36. cmc

    cmc Turbo Monkey

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    another example of the step up to rounded-corner landing design for a box jump:



    still shot taken from "Kriss Kyle and the new BSD TrailOrPark frame" http://vimeo.com/15397667
     
  37. cmc

    cmc Turbo Monkey

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    sick wood capsule/full pipe ! :

     
    #77 -   Apr 20, 2011
    Last edited: Apr 20, 2011
  38. cmc

    cmc Turbo Monkey

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  39. cmc

    cmc Turbo Monkey

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    was pretty stoked to see another step-up box jump... this time at the Whistler Air Dome.

     
  40. don

    don Turbo Monkey

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    That Whistler Air Dome looks real good. How'd those step-up boxes ride?

    Rode the local indoor park, Incline Club down in Lakewood, NJ last week. They had a nice step-up box that took me a few turns to sort out but once I rode it like trails I was set. Had to turn off the box-jump switch, haha.

    I didn't get any pics or vids but here is a Youtube clip of the whole place: You can see the step-up box in parts.