CityCyclingEdinburgh Forum » Infrastructure

Crank gears

(11 posts)

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  1. algo
    Member

    I know there have been some predecessors (Schlumpf etc), but the gear ratio picture looks quite impressive - equally spaced 18 gears with better range than a Rohloff - 2.7 kilos is a kilo heavier and it's not going to win any beauty awards but it seems pretty impressive…

    http://pinion.eu/p1-18-getriebe/

    (don't think this has been posted before)

    Posted 9 years ago #
  2. I were right about that saddle
    Member

    If I'm not much mistaken that's essentially a miniature motorcycle gearbox. Lovely idea.

    Posted 9 years ago #
  3. algo
    Member

    It says it's 3x6 so I wondered too if it was 3 6 speed motorcycle sequential gearboxes - no technical data there really apart from ratios and no pics of the shifter so I'm just guessing…

    (edit: shifter is Rohloff rotating grip style - possibly indicating sequential)

    Posted 9 years ago #
  4. Arellcat
    Moderator

    PinkBike has done one of the more in-depth reviews of the Pinion gearbox:

    http://www.pinkbike.com/news/Pinion-Gearbox-First-Ride.html

    Just about everyone likes it, and internal drag is comparable with derailleurs. The shifter is dual cable, so like a Rohloff, and ratios are engaged sequentially by pawls projecting (or not) from the two shafts. The only gripe is that the cables enter from the top at the front end, so may be more prone than a Rohloff to accumulate crud thrown from the wheel.

    Posted 9 years ago #
  5. algo
    Member

    thanks Arrelcat - neat system….

    Posted 9 years ago #
  6. Arellcat
    Moderator

    I understand from a touring bike review on idworx-bikes.de that a 12-speed and two 9-speed gearboxes from Pinion are being introduced too, to make the technology more accessible to urban cyclists (rather than Pinion's target demographic of hardened tourers and mountain bikers).

    Posted 9 years ago #
  7. DaveC
    Member

    This looks like a winter option for commuters who want maintainance free bikes with only the odd (annual??) belt change done at a LBS?

    Posted 9 years ago #
  8. Chug
    Member

    Looks neat, but with the gearing being at the front end, doesn't it spin up the chain/belt drive to quite a high speed?

    Posted 9 years ago #
  9. Darkerside
    Member

    What's that? You want the ultimate commuter and you've found a buyer for that surplus kidney?
    http://www.en.tout-terrain.de/bicycles/silkroad-xplore/

    Posted 9 years ago #
  10. I were right about that saddle
    Member

    They're very coy about the price in that 'if you need to ask you can't afford it' way. €4,896.40 for the model I built in the Konfigurator.

    http://www.velo-ocean.de/toutterrain/konfigstart_tt.html

    Posted 9 years ago #
  11. Darkerside
    Member

    But I'll bet it was lovely...

    Posted 9 years ago #

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