On Tue, Jul 21, 2009 at 9:20 PM, <[email protected]> wrote: > Oblique chain runs are to be avoided since the result in excessive > wear on the chain. Out of the theoretical 2x9 or 3x8 positions, > one would avoid "largest chain wheel + first or second largest > sprocket", "smallest chain wheel + first or second smallest sprocket", > "middle chain wheel + smallest or largest sprocket". (See markers > above.) > > Fitting in a J expression to filter out such illicit gear combos > is probably another nice exercise.
I would scale the numbers, find the difference and exclude differences whose absolute magnitude was too large. -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
