On 3/28/2015 3:05 AM, Gene Heskett wrote: > On Friday 27 March 2015 23:28:12 Gregg Eshelman wrote: >> I've an idea for a project involving a pair of 9x20 9-speed >> quickchange gearboxes mounted side by side, with a filler between and >> three gears to couple the output of one to the input of the second. >> >> I'll have the gearbox off my $50 9x20 but need another. >> >> 9 speeds on one box feeding a second box with 9 speeds... I wonder if >> any combinations would be duplicates? > > I believe that any combo would be the same as mirroring the combo, eg 3rd > gear on box 1 and 5th gear on box 2, would be identical to 5th gear on > box 1 and 3rd gear on box2. So while 1st gear in both boxes would be a > set stakes and call a surveyer slow, there would not be the 81 > variations with no dups. > > To me, with the capability in LCNC to lock axis motions together, it made > more sense to put a bigger HP treadmill motor on mine, with a fixed 3/1 > reduction before it got to the backgear. With a fwd only toroid mod to > one of Jons servo amps, and an old 1500 WA phase linear audio amp power > transformer for a motor psu, it could turn the spindle in a much bigger > lathe than my toy 7x. I can still get to 1500 rpms, not fast enough for > real CSS at small diameters, but usable for above 0.75" OD stuff.
I'm thinking of a much less expensive way to put a gearbox on an old Montgomery Ward manual lathe. One box of 9 ratios isn't as good as the 5 and 8 position dual lever (and hard to find+expensive) Logan original. A New-All or one of the other 1 or 2 old brands of aftermarket boxes are even harder to find. I need to be finding some good ACME rod for the 9x20 CNC, motors etc. --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
