multimodal commuter
Join Date: Nov 2006
Location: NJ, NYC, LI
Posts: 19,808
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
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According to Dahon, the gear ratios of the Curve are 42, 56, and 77 gear inches. The Mini's gears range between 28 and 85.
Browse Caaah's posts, I think you'll get a pretty good idea of the expense and nuisance of the conversion. If you did it all yourself, you might be able to do the conversion for $200 or less... but you'll run into the chain clearance problem, which can easily set in motion a domino effect of little expenses which will stop... well... who knows where.