On Mon, Mar 10, 2014, at 04:55 PM, Gene Heskett wrote:
> Continuing this thread of trying to determine what belt I need to properly > fit these pulleys, I have talked to Chris Wood at LMS but he can't help me > with anything but OEM parts, so some math based on the gullet od + the tip > od on the pulley, half of that to get the "pitch diameter" converted to > pitch circumference, then divided by the number of cogs, 30 in this case, > give me a pitch length of 4.60mm, and in cycling my digital caliper through > its modes, one thing seems to stand out, 3/16". Are there belts made with > a 3/16" pitch? On most timing belts, the "pitch line" (where you measure pitch diameter) is not half-way up the teeth as you calculated. It is actually a little outside the tops of the teeth, where the strength members of the belt are. See the drawing at http://ca-cycleworks.com/c/pics/machining/tb_meas/Timing_Belt_Pulley_Pitch_Diameter_and_Outside_Diameter.jpg -- John Kasunich jmkasun...@fastmail.fm ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/13534_NeoTech _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
