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  1. #1
    Join Date
    Dec 2009
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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
    Join Date
    Feb 2012
    My Bikes
    Custom Single, factory fixed, Cannondale RT2
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    we would be very interested to follow your progress and provide our thoughts/opinions any questions/concerns that you have.


    Capt'n Haddock]Strava Tandem Club

  3. #3
    Tandem Vincitur Ritterview's Avatar
    Join Date
    Sep 2005
    Northern California
    My Bikes
    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.


    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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