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  1. #1
    Junior Member
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    Hand-built LWB recumbent, Cruzbike conversion on a SpeedOne 20" folding frame.
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    20" recumbent and internally geared hub

    Greetings,

    I have a question I'm hoping some folks here might answer. I recently added an FSA Patterson-Metropolis CVT to my 20" recumbent. I'm running an SRAM 11-28 cluster. My gear inches went from 25-89 to 18-75. With only limited riding, I can say that I'm please with its performance. And it's nice to be able to climb the many hills here in Kuala Lumpur.

    I'd next like to swap the SRAM for an internally geared hub. I'd like to keep the low gearing where it is, but get the high gearing to mid 90s or above. A Sturmey Archer XRF8 and the Nuvinci N360 both achieve this.

    I'm aware of the weight of both, and of some issues regarding reliability with SA. One potential issue with the Nuvinci N360 is the input torque in the low gears. I regret that I'm not entirely clear how this works, but I don't want to have a setup that is outside the warranty.

    As I'm in Malaysia where I won't have any support for either product, I need something less likely to fail. So, if you had to choose...?

    Many thanks to those who respond.

    Chris

  2. #2
    Senior Member osco53's Avatar
    Join Date
    Oct 2012
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    Central Florida
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    Sun Tour Easy LE, Sun EZ-3, Scott Spark 760, Walmart Thruster 700c single speed..
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    ,,,A Larger Large Chaining ?,,,,,a Larger middle chaining ? to soften the step up ?,,,,,
    Scott Spark 760, Tour Easy LE, Sun EZ-3 sx, Walmart Thruster :P

  3. #3
    Junior Member
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    Hand-built LWB recumbent, Cruzbike conversion on a SpeedOne 20" folding frame.
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    Thanks osco53, but note that I just added an FSA Patterson-Metropolis CVT to replace my chainring. I'm afraid I'm stuck with the 28/45. In any event, the more I read the more confident I am that I'll not exceed the torque limit.

  4. #4
    coprolite fietsbob's Avatar
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    S-A 8 is 1:1 low and 7 overdrive gears , so say 20T cog.. [23, or 25t],
    so the combination with the FSA Patterson-Metropolis 28 and the 45 ..

    low is 28" the 8th gear in the hub is like 3.5:1 so that '44.8t' acts much bigger ..
    pretty huge actually.

    http://www.sturmey-archer.com/products/hubs/cid/5/id/6/specs/1

    S-A , Sun Race , like so Much of the Bike Biz is Taiwan based,
    so maybe a Hong Kong Connection, for service is available.
    Last edited by fietsbob; 05-18-13 at 06:01 PM.

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