**HEAVY DUTY CUSTOM LAYBACK SEAT POSTS **

Discussion in 'FOR SALE' started by slowriderz, Jul 11, 2012.

  1. slowriderz

    slowriderz

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    Cedar rapids / Palo Iowa
    Thank you again guys!! your projects look super!!!
     
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  2. my65pan

    my65pan

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    I need one like this one posted above with a 1" post, necked down to 7/8" on the last inch or two of the horizontal portion.
    BBF7F149-8586-4E2C-845A-57085668D6A8-11364-00000AA09DCCBD5A_tmp.jpg
     
  3. GuitarlCarl

    GuitarlCarl Pro Member

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    Thank you brother. The truss bits are perfect. My current build, Harlequin T, is also using the last seatpost I got from you.

    Carl.

    sent from a banana phone...
     
  4. slowriderz

    slowriderz

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    Thank you!!!! The build looks amazing!!!

    Sent from my SM-G930R4 using Tapatalk
     
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  5. blwnmny

    blwnmny

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    IMG_1541.JPG I have one on every one of mine, here's one I put on my Shelby the other day.:)
     
    Last edited: Mar 20, 2017
  6. GuitarlCarl

    GuitarlCarl Pro Member

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    Gotta love Chop Shop parts!
    KIMG0576.JPG
    Today's pic, not done, but close.
    Thanks for everything bro.

    Carl.
     
    FishMan316 and pick like this.
  7. Pop.Cycle

    Pop.Cycle Pro Member

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    These still being made?

    Have any idea what the diameter of a Dyno cruiser is?.....
     
  8. FlyingMerkel

    FlyingMerkel

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    Sent pm about post.
     
  9. KelRob

    KelRob

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    PM sent.
     
  10. ratttrike

    ratttrike

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    Mar 8, 2016
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    Looking for a 7/8 post custom made. 23 inches long. Not sure of angle on bend due to the angle of the bike frame.
     
  11. Danssoslow

    Danssoslow

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    Here's a little how-to for finding the angle on the seat you want. You'll need a tape measure, a straight edge (I used a broom stick), a piece of tape if you don't want to mark up your bike, and a Sharpie marker.

    -First, remove the seat post and clamp from your bike.
    -Take that piece of tape and stick it to the seat tube, making sure the tape is low enough so that the Seat Stay doesn't interfere with the triangle we plan to make. I figured 7" down worked in my case.
    20170426_215323-1.jpg

    Then I made a mark on the tape 7" down from the Seat Tube's top edge.
    20170426_215434-1.jpg

    Next step, is to take the broom stick, rest the tip of the brook handle on top of the Seat Tube, and hold the broom stick at the angle you want the seat post to be at. Once you like the angle/position, you will need a way to keep the broomstick in place while you mark and measure. I had my wife hold it still for me.
    20170426_215531-1.jpg
    This mark on the broom stick isn't necessary, but there to show you that our measurement down the broom stick will originate from this junction of the Seat Tube and the broom stick.
    20170426_215554-1.jpg

    Like the 7" mark I used on the Seat Tube, pick general area down the broomstick that will keep the Seat Stays from interfering with the triangle. I made a tiny mark then measured it (from that "junction" from the pic above) and it was 12.5".
    Keep in mind, this mark is up to you to choose. Longer or shorter, it doesn't matter. We are not determining the post length to the seat, just the angle.
    20170426_215644-1.jpg

    Now we have two definitive sides to our triangle, 7" & 12.5". Now we will use the tape measure to make that third side. Putting the dummy end on my 7" mark (hold the tape there with one of your hands. I couldn't because I was taking pics)...
    20170426_215657-1.jpg

    ...and lining the other end of the tape up with my 12.5" mark. As you can see in the pic, my third side is 17-3/8", or 17.375".
    20170426_215711-1.jpg

    Next post, I'll plug them in to find the angle.
     
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  12. Danssoslow

    Danssoslow

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    Now use some google-fu to find an online triangle calculator. I used this one on Calculator.net. This is the opening screen. It works off of 3 points of measure, with the 60 degree measure already provided. So first, delete the 60 degree measurement.
    Screenshot_2017-04-26-22-00-14.png

    After removing the 60 degree measure, plug in the lenths, laid out like I took them from the left side of the bike; Seat Post on the left, broomstick on the right, and tape measure on the bottom.
    Screenshot_2017-04-26-22-00-45.png

    Press calculate, and BAM!, the angles are ours! As you can see in the pic, we are looking for the angle opposite our 17.375" tape measure side, which is 123.52 degrees.
    Screenshot_2017-04-26-22-00-59.png
     
  13. ratttrike

    ratttrike

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    Awesome stuff. I will get back to you with some numbers soon.


    Sent from my iPhone using Tapatalk
     
  14. ratttrike

    ratttrike

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    Mar 8, 2016
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    3
    [​IMG]

    Looks like we have 123.035
    Hopefully my picture is attached
    I'm looking for a 21" post with the bend at the 15" mark.

    [​IMG]

    This is the seat post currently in the post. It is and always has been too small.

    [​IMG]

    You can see where it has drawn the top of the support tube together.

    [​IMG]

    Sure this shot isn't helpful at all but you can see the outside diameter is 1"

    [​IMG]
    This is my current seat post in upside down. That sucker is tight. I fear it's only going in this far because of the split on the top of the seat post support. It's weird. I remember when I started this build many years ago I had issue fitting a seat post. I believe this trike to be an old Western Auto type bike. It was brush painted red but I found orange in places when I broke it down to blast it.
    Just trying to throw as much at you as possible. Want to try and nail this thing the first time (or see if it's even possible).
    Let me know what you think. Thanks



    Sent from my iPhone using Tapatalk
     
  15. Pop.Cycle

    Pop.Cycle Pro Member

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    Email and FB IM sent
     
  16. emfife

    emfife

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    DFW
    [​IMG]

    Check it out, my Chop Shop seatpost chromed...that's right, CHROME

    Yeah buddy
     
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  17. Pop.Cycle

    Pop.Cycle Pro Member

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    I will give props as dude was quick to respond........buuuuut, he's moved shops and doesn't currently have the means to produce more. He does have some limited sizes available if you reach out but only a few. Nice guy tho!
     
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  18. Rusty_S85

    Rusty_S85

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    Jun 9, 2017
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    Too bad I found this late. I'm working on a build and trying to find a seat post that will not just move the seat back but keep it fairly low.
     

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