Help with frame design for Marino build for big boy (6'6"/250)-
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  1. #1
    Join Date
    Oct 2007

    Help with frame design for Marino build for big boy (6'6"/250)

    I am planning on a Marino. At 500 Cdn for a custom frame it is a no brainer. I wanted a cross between a Pole HT and an Arcturian.

    Anyone out there in Clyde land that has had a modern hardtail built custom and if so could you share your geo numbers...

  2. #2
    mtbr member
    Reputation: vikb's Avatar
    Join Date
    Sep 2008

    I was ~200lbs @ 5'11" ready to ride at when I built up a 29+ custom steel hardtail not sure if that qualifies as clyde's level or not.

    My goal was to go as long as feasible given my body does not like super steep STAs and I did not want to be stretched out in the seated position. I also wanted a really lively "steel is real" ride quality so I wanted more flex than less without it becoming a noodle.

    I'm super impressed with both the geo and the way it rides. The climbing is superb and the descending is so much better than I was expecting [this is my first modern geo HT]. My other HT experience has been on more conservative designs that got down okay, but that was definitely not their forte in loose/steep/techy terrain.

    Only two things I would change if I was doing a do over:

    1. make it slacker 0.5 to 1 degree
    2. add ISCG tabs

    Good luck. The Marino bikes I have seen online look great.
    Safe riding,


  3. #3
    mbtr member
    Reputation: scottzg's Avatar
    Join Date
    Sep 2006
    Help with frame design for Marino build for big boy (6'6"/250)-29er.jpg

    I 80% designed this and i've built a handful of frames, but my friend (a professional frame builder) built it. It's fairly terrible at switchbacks and surprisingly excellent everywhere else. Yep, even though the geo falls somewhere between pole and arcturian, it's amazingly versatile. I paid more in materials cost than what marino charges for a frame, and it is not extravagant at all. Mine has a 83mm bb and a 157 rear hub. I'm not sure if Q factor is irrelevant for all tall people, but 73 and 83 are the same thing for me, and i appreciate how it's easy to build a stiff/durable/simple rear end that can swallow a 29+ tire if you adopt the wider BB. Even if you don't go for a 83mm bb, it's stupid not to use 157 spacing.

    I'm over-the-moon happy with it. It's amazing! It accidentally replaced both my 6" enduro bike and my trail hardtail. I'm 6'3 and 230lbs. I can be much more detailed if asked.
    "Things that are complex are not useful, Things that are useful are simple."
    Mikhail Kalashnikov

  4. #4
    Join Date
    Oct 2007
    My thanks to scottzg and vikb. I am on the same page as both of you as far as geo numbers. Mine will be a bit longer in both the rear and front as I am taller. 83/157 was pretty much a sure thing to make sure that I have the clearance I was after but now it is a done deal. I really appreciate the information.

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