On Tuesday 31 May 2016 06:31:07 John Thornton wrote: > I assume a 1/2" belt won't fit the spindle so have you tried the > kevlar belts? McMaster 51514T315 <http://www.mcmaster.com/#51514T315> > > JT
That one is $23.62/copy in 3/8 by 70 cogs. The one next to it called dust-free at $4.76 (1679K126) looks interesting. And for some reason its cheaper than the regular fiberglass & neoprene XL ?? 5 belts, 2 pulley's ordered. The pulleys will need bored out for the bigger 1/2" shaft. Other than the time to setup and locate the center of the cogs, shrug. > On 5/30/2016 8:14 PM, Gene Heskett wrote: > > Hi all; > > > > For want of a better project to keep me out of the bars tonight, I > > went out and extracted the stripped belt off the toy lathe just now, > > find it well labeled as a 130XL037, 3/8" wide, 65 tooth belt. It > > appears that I had already replaced the ultra teeny drive pulley > > that stripped the last belt easily had already been replaced with a > > 15 tooth model. So even with about 7 cogs fully engaged, this motor > > still had the cojones to strip the teeth off the belt. So I am > > thinking out ordering a 140 or even a 150 (75 cogs) belt and a > > bigger lower drive pulley which should get more cogs engaged. That > > will of course raise the spindle speed and probably make me run on > > low backgear more often, but this motor has the cojones to do that > > so I am not worried too much. > > > > So my question is, if I buy a 150 cog belt, and the existing lower > > pulley has 16 cogs now, and I add 10 more to the belt, making it 75 > > it sounds as if I would need to add another 5 to the almost half > > circle that would be engaging the belt on each side, so the 16 cog > > pulley now would turn into a 26 if I want the center to center > > distance to remain within say 2mm's of what it is now. That seems > > to me like if I tension it to about high C, that ought to be able to > > survive that 1 hp motor long enough to at least finish one job, > > bearing in mind there is a 3/1 stepdown between the motor, and the > > shaft turning this lower pulley. > > > > Is my math somewhere near correct? And would I be better off paying > > the price of one of the white poly/kevlar belts as opposed to this > > black one with a few strabds of kevlar in the backing and teeth that > > look like a glass reenforced black rubber? I'll check > > McMaster-Carr, but I can get this belt for about $4/copy from the > > prople that used to be GoodYear. > > > > Comments anybody? Or did my mental math blow it, like its been > > known to do several times before? > > > > Cheers, Gene Heskett > > ---------------------------------------------------------------------- >-------- 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. > https://ad.doubleclick.net/ddm/clk/305295220;132659582;e > _______________________________________________ > 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> ------------------------------------------------------------------------------ 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. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
