I would not use a spring tensioner but rather tension the belt to a permanent fixed tension. Just check it on a regular basis. My experience with spring tensioners is that they will produce backlash or movement because they can. A good belt will have no stretch or very little over the short distance that we talk about here.
On 2013/11/03 01:28 PM, Mark Wendt wrote: > Only issue I can see here in this configuration is with tensioning both > idlers. If the motor is spinning in either direction, one idler is always > going to be tightening the belt, and the other is going to try to be > loosening due to driving forces acting on the idler from the belt and the > smaller pinion gear acting on the larger gear. > > How does one account for that, ensuring the belt stays in tension? > > Mark > > > On Sat, Nov 2, 2013 at 1:19 PM, Tomaz T. <tomaz_...@hotmail.com> wrote: > >> Dave, >> Tomaz's picture was interesting >> if 2 idlers are used >> the opposing tension is kinda anit-backlash >> and I'd try mounting encoder on one of the 2 tensed gears >> ( if you couldnt mount on axis proper, requiring thru hole ) >> regards >> TomP >> >> >> I think there should be something in between two pulleys, because it would >> be difficult to match belt length just right. That also means sacrificing >> trough hole... >> >> Could this work?: >> http://picpaste.com/pics/Gearing_02-qYmummoI.1383412496.jpg >> >> ------------------------------------------------------------------------------ >> Android is increasing in popularity, but the open development platform that >> developers love is also attractive to malware creators. Download this white >> paper to learn more about secure code signing practices that can help keep >> Android apps secure. >> http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > ------------------------------------------------------------------------------ > Android is increasing in popularity, but the open development platform that > developers love is also attractive to malware creators. Download this white > paper to learn more about secure code signing practices that can help keep > Android apps secure. > http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Regards / Groete Marius D. Liebenberg MasterCut cc Cel: +27 82 698 3251 Tel: +27 12 743 6064 Fax: +27 86 551 8029 Skype: marius_d.liebenberg --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com ------------------------------------------------------------------------------ Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
