What length stroke do you need? McMasterCarr has 3/4" cylinders in lengths up to 24". (1-1/16" up to 36") http://www.mcmaster.com/#standard-air-cylinders/=12348ld
----- Original Message ----- From: "Gene Heskett" <ghesk...@wdtv.com> To: emc-users@lists.sourceforge.net Sent: Thursday, April 21, 2016 6:45:49 PM Subject: Re: [Emc-users] Question on DM860 stepper drivers On Thursday 21 April 2016 11:32:25 andy pugh wrote: > On 21 April 2016 at 16:17, Brent Loschen <brent.losc...@gmail.com> wrote: > > I'm curious if anyone has compared moving mass (pulley/cable/mass) > > vs springs for counter weighting a G0704. Other than ease of > > implementation, space requirements, etc., any real world > > advantages/disadvantages of either? > > A spring will only have the right force in one spot, it will be too > high or too low everywhere else. > A pulley and weight can be exactly balanced at all times. But doubles > the mass to be moved, so actually reduces peak acceleration. > > The ideal is probably a pneumatic strut with a relieving regulator. That isn't something we can steal off the tailgate of a mopar/mitsubishi van for a $30 bill apiece. I also thought of that but with a 1 or 2 lb propane tank to serve as the expansion chamber. That would not, except for the piston friction, have a huge effect on the accels or maxvels. Piston friction could be considerable though. Are there such beasts available, perhaps in a .750" or 20mm bore? What I've found didn't have the stroke. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
