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 -- "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
