Since I am switching out the nominally 1.5 lb motor couplings of the 3 piece sliding fin in slot design, for a gram or 2 of the 1/4" to 1/4" alu helical couplings, I can see that the amount of damping I get from the dampers on the rear of the motors is going to be quite a bit more important in the middle speeds.
Has anyone written a speed sweeper that, in combo with a scope, could show the effect of the damping one gets for adjusting the squeeze collar of one of the fender washer and rubber disk construction dampers? I would think it should be visible in the back emf of the motor when the driver is in the off state. Syncing the scope to the off state will be a trick but it can be done, with a delayed sweep scope, which I have. This, to my knowledge, has not been well researched (or at least not published that I have found) as it seems everyone is happy when they see an improvement even if its not an optimized improvement. Much more of a black art (black magic some would say) than any real data, or a good way to measure it. This is also a case of a better ride with less unsprung mass, so my steel spools should someday be replaced with alu, so the fenders washers are a greater percentage of the moving mass, raising the resonant frequency at the same time. Suggestions/comments? Links to usable math discussions that I haven't found with my google-foo? 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> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
