iv'e used them a lot , in the same situation Gene , without any problems , just get the gap correct , and a nice clean switch of logic , and they will be fine in fact they are pretty resiliant even when crudely set .
i love them Sarah On 22 July 2016 at 05:43, Gene Heskett <[email protected]> wrote: > On Thursday 21 July 2016 23:54:31 Gene Heskett wrote: > > > Greetings all; > > > > Just for S&G I stopped at the place that still has that old Porter > > lathe he wanted $500 for a couple years ago. About a 16"er, 6 foot or > > more bed, but no motor. It would have been at least a year at my pace > > to bring it back to life. > > > > But that wasn't the surprise. That was in the form of an old air > > compressor he had taken as junk from the local horsepistol in a > > remodel/upgrade of some sort. One big horizontal tank, with two > > overhead pads on it, each of which held a single cylinder, 1 hp > > compressor, and each had its own 1HP 3 phase 230 volt Dayton motor > > that spun very freely and had no endplay, so since the bearing numbers > > were on the label, I have to assume ball bearing. I offered him 50 > > bucks for both of them. > > > > Next thing I knew, he was dragging out the cutting torch because the > > bolts were rusted and hard to get to, so both are sitting on my garage > > floor right now. > > > > I have company, 2 of my boys will be in Sunday thru Tuesday this next > > week, so we'll have to make a trip, maybe two, to the rifle range, but > > if I can find a round tuit before then, I'll have both of them > > clipleaded to that 1.5 HP rated inverter & see how they like running a > > bit faster than 60 hz for 1750 revs. > > > > In other words, I found a motor, and with luck a spare that I can run > > with linuxcnc for rigid tapping and such on this Sheldon. One more > > problem solved, although I may have to build a lock pin of some sort > > to keep from unscrewing the chuck with a quick reverse. And now I > > need to find where to put an encoder on it. More shade tree > > engineering I think. > > > > So things are looking up at a bit better angle. ;-) > > > > Cheers, Gene Heskett > > I just went out and stared at it for a couple minutes, and something > along the lines of Jon's Bridgeport and the hall effect sensors Jon > Elson used looks doable. But with this motor potentially having the > ability to do 8k rpms with this inverter, and the big gear on the > spindle right behind the front bearing looks like a good candidate, but > this motor has the ability to turn the spindle well above the 1300 it > can do now (faster than I'd be comfy standing in line with it) and thats > about 10EE20 teeth a minute gong by a hall when its throwing lube oil 20 > feet. So my question is, since that gear must have at least 100 teeth, > are the halls that fast? > > I just pulled the allegro ATS-667 datasheet to see if I can get any > schmardter. Looking at that, 10u-s on delay, sub-microsecond off delay, > So it should to twenty kilohertz. So it should work up to anything I'd > be comfy around. I'll have to eyeball some more for an index trigger > though. > > 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> > > > ------------------------------------------------------------------------------ > 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.http://sdm.link/zohodev2dev > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- The information contained in this message is confidential and is intended for the addressee only. If you have received this message in error or there are any problems please notify the originator immediately. The unauthorised use, disclosure, copying or alteration of this message is strictly forbidden. This mail and any attachments have been scanned for viruses prior to leaving the RcTechnix network. RcTechnix will not be liable for direct, special, indirect or consequential damages arising from alteration of the contents of this message by a third party or as a result of any virus being passed on. 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