NEED A QUICK ANSWER, Seat Post Slot- Front or Rear?- Mtbr.com
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  1. #1
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    NEED A QUICK ANSWER, Seat Post Slot- Front or Rear?

    Building a fat frame, should I place the seat tube slot on the front or rear of the tube. My gut says front to help avoid muck buildup entering the seat tube. HELP

  2. #2
    mtbr member
    Reputation: Velobike's Avatar
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    I've seen argument against that. It may have been Brant from On-One - can't remember. I think it all may depend on how close the slot is to a weld, but I could be wrong.

    I find it simpler to keep the muck away in the first place.



    24 hours of mud and none down the seatpost. Cover made from an inner tube.
    As little bike as possible, as silent as possible.
    Latitude: 5736' Highlands, Scotland

  3. #3
    is buachail foighneach me
    Reputation: sean salach's Avatar
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    I've had both. Haven't noticed much of a difference.

  4. #4
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    Sean,
    ride in ultra fine sand often? I'm going with a front facing slot. thanks

  5. #5
    Harrumph
    Reputation: G-reg's Avatar
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    I asked that question in the frame building forum. The only real reason for it to be at the back was it's easier to cut the slot once the frame is done.
    Slowly slipping to retrogrouchyness

  6. #6
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    Front works better if you want to keep water/mud away. But back is a stronger and more logic design. Seatpost puts most weight on the back and the slot helps the tube from cracking/ovalizing. IMO.

  7. #7
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    The slot is in the front. The frame is getting welded right now. Thanks folks. no more replies needed!

  8. #8
    Bunker Hill Bikes
    Reputation: cjsbike's Avatar
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    Good choice!

    Quote Originally Posted by Cracked Headtube View Post
    The slot is in the front. The frame is getting welded right now. Thanks folks. no more replies needed!
    Good boy!

    Both my Quirings (29er & Fatbike) have the slots to the front.

    Same thought: reduce the amount of muck, crud and moisture in the frame!

    -Chad

  9. #9
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    Also, the vent hole on the BB shell was much bigger than normal. I am also going to add a threaded plug on the underside of the BB, stainless of course. I'm using an ISIS bb so it being a 'grease port is kind out of the question. I bugged up a toptube last night, which set me back an hours worth of work, meh. downtube gets cut this morning then the front tri can get tacked. clickbzzzzzzzzzzzzzzzzz

  10. #10
    is buachail foighneach me
    Reputation: sean salach's Avatar
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    And the in progress frame build photos are????

  11. #11
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    <img src="https://lh6.googleusercontent.com/-935psPLaWq4/T1rW97Z7r8I/AAAAAAAABb4/2EAuqnQ1b18/s862/2012-03-09_20-28-58_250.jpg">
    with the cut-too-short toptube
    <img src="https://lh5.googleusercontent.com/-KLt0xlFd6uU/T1rW95pbtuI/AAAAAAAABb4/TEe0JIXLI6Y/s862/2012-03-08_23-12-14_188.jpg">
    big ol bb shell

  12. #12
    is buachail foighneach me
    Reputation: sean salach's Avatar
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    Awesome! Keep us updated.

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