or this?
https://www.dropbox.com/s/zcew9qfv98kcgrn/testgear.AVI?dl=0 On Fri, Dec 15, 2017 at 11:05 AM, <[email protected]> wrote: > That does sound interesting > If I have permission to use your design I may try to make one of those > > > Quoting John Kasunich <[email protected]>: > > On Fri, Dec 15, 2017, at 06:16 AM, andy pugh wrote: >> >> If you look at stock internal gears: >>> http://www.hpcgears.com/pdf_c33/17.7.pdf >>> You will find that getting a pair that differ by only one tooth isn't >>> that easy. And they will differ in PCD. The PCD difference isn't to >>> hard too deal with in external gears if you can make them big enough >>> for the corrections not to distort the teeth too much, but it would be >>> much easier to not have two PCDs on the planets. >>> So, you would ideally be making your own internal gears. >>> >> >> I believe it would be possible to design a similar drive using the same >> internal gear for both the grounded ring and the output ring. All the >> gears would have standard tooth forms, and could be off-the-shelf. >> >> The trick is that the planet gears centers would have to be at different >> radii. So instead of the two sets of planet gears running on the same >> planet carrier pins and being fastened to each other, you would have >> two sets of planet carrier pins (probably on opposite sides of a planet >> carrier plate). The planets would all be independent. One set would >> have N teeth, the other set would have N+1 teeth. The sun gear would >> be two stacked and coupled gears, one with M teeth (meshing with >> the N tooth planets) and one with M-2 teeth (meshing with the N+1 >> planets). >> >> Not sure if what I'm describing is still a wolfrom drive, but it would >> have the same result - a very high reduction from planet to output >> ring. >> >> -- >> John Kasunich >> [email protected] >> >> ------------------------------------------------------------ >> ------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > > > > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Addressee is the intended audience. If you are not the addressee then my consent is not given for you to read this email furthermore it is my wish you would close this without saving or reading, and cease and desist from saving or opening my private correspondence. Thank you for honoring my wish. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
