Gene,
On 05/30/2016 11:11 PM, Gene Heskett wrote: > On Monday 30 May 2016 23:09:23 Chris Albertson wrote: > >> I would not make the belt so strong that the >> next strongest part is expensive snip > Still a good point but I believe the rest of the drive stuff could handle > 50% more delivered torque to the chuck, considering that adding cogs to > the lower pulley would reduce the pull on the belt as the pulley radius > rises, and put more cogs in contact with the belt at the same time. It > would also be a good excuse to make a new countershaft that is a full > 1/2" at the lower pulley's hub, strengthening that considerably from its > current 10mm diameter. The rest of the plastic headstock gearset is now > metal too. > > I haven't ordered anything yet, I looked at the white si rubber belt on > the M-Carr site, but I can buy 5 of the kevlar backed neoprene ones for > the price of one of those. > > But that doesn't answer how much bigger I need to make the lower pulley > in terms of its cog count if I get the 75 cog belt instead of the 65 cog > belt. > > If I added 10 cogs to the belt, how many more cogs do I add to the lower > pulley to maintain the current center to center spacing? > > Thanks Chris. > > Cheers, Gene Heskett I probably missed it somewhere, but what is your center distance, and the pitch of the pulleys that you have now? This is a calculator that I have used to play around with different belt/pulley combinations to fit within the center distance measurements on a rotary table I'm modding: https://sdp-si.com/eStore/CenterDistanceDesigner Move your motor to it's limits in, and out, and measure it's center distances. Then pick a point somewhere in the middle, and adjust the numbers on the page, until the belt and pulleys fall within reasonable sizes. -- MC Cason Eagle3D - Created by Matthias Weißer github.com/mcason/Eagle3D ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
