gene , have a go at this http://precisionparts.wmberg.com/timingBeltsChains
jeremy youngs On Mon, Mar 10, 2014 at 5:17 PM, John Kasunich <jmkasun...@fastmail.fm>wrote: > > > 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 > ------------------------------------------------------------------------------ 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
