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Thread: Seat tube slotting setup procedure

  1. #21
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    Default Re: Seat tube slotting setup procedure

    In the wild world of carbon fiber, it is not so different than the aforementioned Anderson method.
    1. Mark my holes (I use 3 slots)
    2. Drill
    3. Use a cut off wheel for the slot
    Matt Appleman

    Appleman Bicycles: Custom Carbon Fiber Frames

    Handmade in Minnesota

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  2. #22
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    Default Re: Seat tube slotting setup procedure

    I do all of mine in the horizontal mill, after I've done the bb cope, so I know what parallel to that plane is.

    1- use the 4" diamond slitting saw to make slots, I like two slots on the sides of the st- keeps all the material at the most highly stressed portion nice and contiguous.
    2- turn tube 90 degrees
    3- use the straight shank section of the 4mm diamond hole saw to locate the slot on both sides of the st (or just keep the tube block clamped on the tube through doing the bb cope, bottle boss drilling and then this)
    4- run 4mm hole through both sides of the tube (tape and slow, natch)
    5- small amount of 200 grit love for those chamfers nobody but you will ever know about.

    This takes me about 2 minutes, mostly changing from the slitting saw to the hole saw (collets, they're great for holding, not for quickly changing.)
    ______________________________________________
    Devin Zoller
    L'Ecu Bicycles
    No. 1 choice of inner SE industrial Portland's discerning velophiles.
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  3. #23
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    Default Re: Seat tube slotting setup procedure

    Being cheap in Cinemascope:
    Aimar Fraga Angoitia
    www.amarobikes.com
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  4. #24
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    Default Re: show us your seat tube slotting setup/procedure

    Quote Originally Posted by e-RICHIE View Post
    .... is there a label for this?
    Yes
    giothead.jpg
    Andrea "Gattonero" Cattolico, head mechanic @Condor Cycles London


    "Caron, non ti crucciare:
    vuolsi così colà dove si puote
    ciò che si vuole, e più non dimandare"
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  5. #25
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    Default Re: show us your seat tube slotting setup/procedure

    Dug through the video files on the laptop and posted this up to help with a visual option...

    Rody Walter
    Groovy Cycleworks...Custom frames with a dash of Funk!
    Website - www.groovycycleworks.com
    Blog - www.groovycycleworks.blogspot.com
    Facebook - https://www.facebook.com/pages/Groov...s/227115749408
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  6. #26
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    Default Re: show us your seat tube slotting setup/procedure

    Cut off wheel and conical bit. One of these days I will rig up a dedicated machine, but in the mean time this is easy peasy*, fast, and quite affordable.




    I should note that it's also easy peasy to mess it up royally, and that a certain amount of practice and muscle memory go a long way. As with most things.
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  7. #27
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    Default Re: show us your seat tube slotting setup/procedure

    I hate to bump a thread up, but what is the standard sizing of a seat tube slot... If considering a best practice approach?
    Matt Moore
    @hellafabrication
    www.instagram.com/Hellafabrication
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  8. #28
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    Default Re: show us your seat tube slotting setup/procedure

    Quote Originally Posted by Hellafab View Post
    I hate to bump a thread up, but what is the standard sizing of a seat tube slot... If considering a best practice approach?
    Measure some and you'll see there isn't a standard. Some people like narrow and some like wide slots. A slot only "needs" to be wide enough to allow the seat post to be clamped.
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  9. #29
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    Default Re: show us your seat tube slotting setup/procedure

    Matt,

    In the video noted above, the slot is .125"

    I have found this the best width to meet my needs in all materials (steel, ti, aluminum) as it is of sufficient width to allow for compensation of stretch as the frame fatigues through the years and hammer fisted mechanics torque it well beyond it's intended requirements.

    cheers,

    rody
    Rody Walter
    Groovy Cycleworks...Custom frames with a dash of Funk!
    Website - www.groovycycleworks.com
    Blog - www.groovycycleworks.blogspot.com
    Facebook - https://www.facebook.com/pages/Groov...s/227115749408
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