On Thursday 30 April 2015 15:52:44 Dave Cole wrote: > Micro V belts are apparently targeted at OEMs like car manufacturers > who can make their own pulleys and order thousands of custom spec > belts. > > A friend of mine tried to buy a setup for a custom machine and nothing > was off the shelf and the selection of belt lengths was very limited. > He could get a belt length that would work but the pulleys were a > custom order - expensive and 6 week delivery. > > I'd go with V belts, HTD or Timing belts and forget about Micro V > belts unless you happen onto the proper parts. > > Dave
Ah, Dave? Did you miss the memo? We are used to making our own special parts. Making the pulley's doesn't seem like a particularly hard thing to do, so that is what I am about. But I have a PITA in the machine that runs my lathe, its recently turned into a crashomatic, with uptimes of about an hour! And since it is an nfs mount, when it crashes, it locks up the rest of the machines that are mounting it. Thats the PITA problem. And IMO a damned bug in nsf4. I think I am going to have to find another PSU for it, there is no other rhyme or reason for it to go away in the middle of a job, like it has done 3x today. I padded up to the shop & tapped the reset button just now so I'll be good for maybe an hour. But I also just commented that line out of fstab on this machine until such time as I get that one fixed. > On 4/30/2015 2:35 PM, Gene Heskett wrote: > > On Thursday 30 April 2015 14:16:55 Gene Heskett wrote: > >> Greetings all; > >> > >> I have been snooping around with my google-fu, and coming up a bit > >> long. > >> > >> Long as in the smallest of tese belts with a kevlar backing, is a > >> 3/8" wide 3 ribber, 21" long. That is too long for what I am > >> trying to do. > >> > >> What I have, under design but not carved just yet, would be a set > >> of pulley's to be used on my toy mill when I remove the whole > >> gearbox on the spindle and replace it with something resembling the > >> LMS is selling for the mini-mill. But the motor will be the 400 > >> watter I took off the lathe when I pout the 1 horse on it, so the > >> motors pulley will need an 8mm hub, probably another shop made > >> taperlock, while the spindle pulley will need a 30mm hub, > > > > Actually, I came across a spare set of the nylon gears for the OEM 2 > > speed, and the spindle diameter where the gears sit, and where my > > pulleys will set, is 20.00mm in diameter, which will leave lots more > > room for a taperlock hub. I've turned one 1/2" thick square to > > 7076T4 (or something like it, turns beautifully) and the larger of > > the 2 pulleys will have 70mm for top of rib diameter. This also > > gives room enough to put one of my encoder disks on it, which should > > enable me to do rigid threading on the mill too. > > > > $64 question. I have a suspicion I had better make the taperlock > > insert out of steel as opposed to the same alloy of alu. Do you > > folks concur? > > > > My thoughts are: that dependent on the assembly lube, the alu > > against alu will gall and seize a lot faster that a steel insert > > would. I haven't yet cut the tapered bore for it. > > > >> possibly taperlock if I can find > >> room for it. The two pulleys will be otherwise alike, with a 2/1 > >> ratio when the belt is in the reduction grooves, and a 1/2 when its > >> in the higher speed grooves, gfiving a variable speed range of up > >> to 2500 in low range, and up to 10k in high range from a 5k motor. > >> That ought to speed up making pcb's a bit. > >> > >> Unforch, on the gates site, no real data unless I kill a tree with > >> their pdf catalog. Other sites, which obviously stock only the > >> popular sizes for automotive useage, do not show anything in the 3 > >> rib 3/8" width, shorter that 21". That would put the motor a > >> couple inches farther off to the side than I'd like. > >> > >> Has anyone else found such smallish beasts and can give me a URL? > > > > Thanks all. > > > > Cheers, Gene Heskett > > --- > This email has been checked for viruses by Avast antivirus software. > http://www.avast.com > > > ---------------------------------------------------------------------- >-------- One dashboard for servers and applications across > Physical-Virtual-Cloud Widest out-of-the-box monitoring support with > 50+ applications Performance metrics, stats and reports that give you > Actionable Insights Deep dive visibility with transaction tracing > using APM Insight. > http://ad.doubleclick.net/ddm/clk/290420510;117567292;y > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users 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> ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
