<snip> > 3) 3:1 reduction drive with 1" diam timing pulley > 250 in oz torque 0.1 oz in sec^2 rotor inertia <snip> > So with the numbers I used you can see that there is a sweet spot at about > 3:1 to 5:1 where the peak torque required is minimum and a reasonable and > typical > rotor inertia gives a good impedance match. > > This is not anywhere near the point where the motor delivers best power or > is > most efficient. It is simply the point of best economy for your design. > > > > > Leslie M.Watts > L M Watts Furniture > http://www.lmwatts.com
Thanks Les, dumb question, but is that power into the drive ? or do you also divide the power by the ratio to get the motor power needed ? I see is that a 1,000 RPM motor is the place to start. that would offer something between 200 and 300 inch per minute rapids. Thanks for your efforts to guide me straight. Dave Addresses: FAQ: http://www.ktmarketing.com/faq.html FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/ Post Messages: [EMAIL PROTECTED] Subscribe: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] List owner: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] Moderator: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] [Moderators] URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO OFF Topic POSTS: General Machining If you wish to post on unlimited OT subjects goto: aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if you have trouble. http://www.metalworking.com/news_servers.html http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list. NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........ bill List Mom List Owner Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
