Hi All, I have a 1948 Overhill "Massed Start" three speed derailleur on a similar vintage Maclean frame, and was wondering if anyone on the list runs one of these or the similar vintage automatic two speed derailleur. Overhill was based in Dorset, England, and the gear is similar to an Osgear or Cyclo Ace except with two cogs on the spring steel grass cutter arm below the BB. Incidentally, someone earlier was asking about a 5-speed standard cyclo, and while the list answered saying these were never made, it might just be possible to experiment using one with a 3/32" five speed block and a modern SRAM or equal 1/8" chain, in fact the only way I got the Overhill to change thru three gears properly was to use this approach. All the best from Over(the)hill Phil Easton, Cambria, California