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Here is a similiar idea with IGH and discs for commuting, but not as tight geo. Geometry shown with the dimensions of a Ritchey WCS fork. Still didnĀ“t get around to build it as I would need about 500 Euros just for the NuVinci wheels. I did however pass on a really nice NuVinci wheelset with belt drive components about a year ago on E-bay and regret it now...
OT: are Shimano Alfine chainring guards size specific or universal
? Would a 45T guard work with smaller chainrings?
entirely possible, but you've pretty much just described a jump bike so no need for a custom