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  1. #1
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    New Ti custom tandem build with max 25 pounds (Shimano Di2/Gates/Hydro Disc)

    Dear Bike Forum community
    one year ago I build up my first alloy tandem with drop bar, double chain ring with 50/34 and disc brake. It goes very well and soon I want to make an order for a Ti custom tandem. Besides the knowledge around and inspired by some very nice builds here in the forum I would like to share with you my full process from A to Z.

    I am from Europe, years ago I cycled a lot (15k km/y). But since I started my own business 4 years ago my priorities has shifted and kilometers/year almost below 2k . Due to time limitation tandem cycling is perfect to use my limited time with my wife on what we like. And now it is time to re-prioritize life.

    Goal: Very light (less then 11.5kg= 25.3pounds w/o pedals) , stiff, comfortable and cool looking tandem.

    Must use components:
    - Custom Ti tandem frame
    - Shimano Dura-Ace Di2 7900 with (hydro)-Disc
    - Drivetrain: Gates Carbon drive and chain with double chainring 50/34 (or in alternative 53/39) and 11/28 cassette

    Captain: 75kg
    Stoker: 55kg
    Maximum additional weight: 15kg

    I don't know if if you want to hear my story. But I realized the tandem community here in Europe is much smaller then in US and I would be more then happy to learn from you. What do you think?

    I will start to share with you
    - geometry
    - frame drawing
    - part list
    and more...
    and finally within 6 month the result

  2. #2
    Senior Member CaptainHaddock's Avatar
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    Feb 2012
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    Custom Single, factory fixed, Cannondale RT2
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    bivinco,

    we would be very interested to follow your progress and provide our thoughts/opinions any questions/concerns that you have.

    yours,

    Capt'n Haddock
    http://img525.imageshack.us/img525/7564/tandemsstravalogo.jpg
    http://app.strava.com/clubs/tandems]Strava Tandem Club

  3. #3
    Tandem Vincitur Ritterview's Avatar
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    Sep 2005
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    Northern California
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    BMC Pro Machine SLC01, Specialized Globe, Burley Rock 'N Roll tandem, Calfee Dragonfly tandem.
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    Well, I'll want to hear all about this!

    I don't know how much Ti frames weigh. Finding frame weights isn't particularly easy.

    To do this project, a spreadsheet is a must. The spreadsheet for my tandem is on Google docs here. I've included on here a link to source each component.

    PM me, and I'll email you my Excel file, which might be more useful.


    Edit:

    I've put the Excel spreadsheet at Dropbox here to download.
    Last edited by Ritterview; 05-13-13 at 09:48 AM.

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