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Thread: The Bicycling thread

  1. #106
    Debbie's Servant Lee's Avatar
    Join Date
    May 2003
    Location
    SW Iowa
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    6,583
    Quote Originally Posted by wildbears View Post
    Our next ride may be a recumbent Terra Trike Tandem with electric assist.

    As these are low to the ground with low visibility, we would restrict our riding to bike trails.

    This model decouples for easy transport.
    I was not able to find the electric assist tandem on the Terra Trike site.
    Lee
    2016 R1200RS
    MOA # 30878
    Past BMW Bikes: 2011 K1300S, 2003 K1200RS, 1991 K75S, 1987 K75T, 1984 R100RT

  2. #107

    TerraTrike with Electric Assist

    TerraTrike has two models that come with electric assist now, but these are singles.

    It might be that you could kit one of these with a TerraTrike single up front. TerraTrike does offer kits to make a single into a tandem. Not sure about using one of these electric assist models.

    Or you could go aftermarket at a good bike shop.

    https://www.ebikekit.com/blogs/news/...version-system

    Electric assist on a tandem may only provide modest assist but enough to keep the "stoker" from being overtaxed if the other rider tires out.

    I was recently left in the dust by a pair of octagenarians on TerraTrikes singles, one with assist. In my defence, it had been a long day.

  3. #108
    Registered User
    Join Date
    Sep 2015
    Location
    Birmingham, AL
    Posts
    238
    I own a bicycle shop, specializing in tandems & recumbents. About 30 days ago I converted a CaTrike to "e-assist", using a Bafang kit. This is a mid-drive unit, and replaced the front crankset. You lose the double/triple crankset, giving you a 1x setup. However, the Bafang offers 1-3-5-9 levels of assist (IIRC), plus a "throttle" to help you up the hills when your assist isn't enough. To put the Bafang on a tandem, you'd need to remove the front BB/crank and convert your tandem to same-side drive, again losing at least one, probably 2 chainrings from the back crankset. If I were to convert a tandem, I'd drop the rear crankset to a single drive ring, install an 11-speed cassette on the rear wheel (you can use an 11/40 11-sp cassette on a "10-speed" road wheel), and install the battery on the front down tube.

    Bafang kits add about 15 pounds to the weight of a bike, but you do remove a pound or so by removing the extra chainring(s) and front derailleur.

    YMMV
    J Goertz
    BMW MOAL
    2015 BMW R1200RT
    2012 Triumph Bonneville SE

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