Parts that (almost) nobody knows.
... Pinion. Because it only fits in frames that are made for it and offer the appropriate mounts and screw points. But what if you have to send your Pinion gearbox in for servicing, or if you feel like riding a derailleur after all?
That's when Williams Racing Products comes into play: the Australian parts company manufactures a milled part that fits exactly into the Pinion (or Effigear) mount and offers space for a conventional, bolted or pressed-in bottom bracket. With a new crankset, a gearshift including cable and outer casing and a new rear wheel, a geared bike can be converted to derailleur gears. But one hurdle remains: In order for the rear derailleur to be fitted, a suitable derailleur hanger is required. This is almost invariably without a derailleur hanger on geared bikes and could be a real tricky nut to crack when it comes to procurement.
Note: This content has been automatically translated from German. Please report any incorrect translations.