http://groups.yahoo.com/group/multimachine/ Open Source machine tools Mon, 23 Nov 2009 02:02:02 GMT DennisF MacIntyre http://groups.yahoo.com/group/multimachine/message/10890 http://groups.yahoo.com/group/multimachine/message/10890 Dear Group    Apologies - More was e-mailed than intended. sorry dennis mac __________________________________________________________________ Yahoo! Canada Mon, 23 Nov 2009 01:41:21 GMT DennisF MacIntyre http://groups.yahoo.com/group/multimachine/message/10889 http://groups.yahoo.com/group/multimachine/message/10889 Dear Pat and Group    I stumbled on this new engine technology and thought it would interest our members. I see it as a gas engine running like a diesel. Sun, 22 Nov 2009 17:03:54 GMT keith gutshall http://groups.yahoo.com/group/multimachine/message/10888 http://groups.yahoo.com/group/multimachine/message/10888 Hello David  If you are building a temporary spindle it does not need to be that large.  I would think that a shaft 3/4-1in would work fine for this app.   Sun, 22 Nov 2009 10:57:58 GMT jgdhiggins http://groups.yahoo.com/group/multimachine/message/10887 http://groups.yahoo.com/group/multimachine/message/10887 Is this particularly accurate? Roadside procedures are more likely to cause problems than solve them, in my experience, haha. Sun, 22 Nov 2009 09:15:27 GMT David LeVine http://groups.yahoo.com/group/multimachine/message/10886 http://groups.yahoo.com/group/multimachine/message/10886 ... And remember that this is a temporary setup to machine the new spindle. -- David G. LeVine Nashua, NH 03060 Sun, 22 Nov 2009 09:12:13 GMT David LeVine http://groups.yahoo.com/group/multimachine/message/10885 http://groups.yahoo.com/group/multimachine/message/10885 ... Thanks, Pat, but I didn't even start to discuss something like a TL49xCN switching regulator. The LM7805 is good to about 38% efficiency while a switcher Sun, 22 Nov 2009 05:17:07 GMT keith gutshall http://groups.yahoo.com/group/multimachine/message/10884 http://groups.yahoo.com/group/multimachine/message/10884 Hello Pat  Bulding a pipe spindle with wooden bearings would work good.  If the wooden bearing were made from a hardwood.  Seeing that it is a bushing type Sat, 21 Nov 2009 19:39:41 GMT Pat http://groups.yahoo.com/group/multimachine/message/10883 http://groups.yahoo.com/group/multimachine/message/10883 DAVID! You are a life saver! I had no idea how to answer questions about reducing the output and load from 1,2,3 or 4 wire alternators! Take very good care of Sat, 21 Nov 2009 18:20:35 GMT Pat Delany http://groups.yahoo.com/group/multimachine/message/10882 http://groups.yahoo.com/group/multimachine/message/10882 Thanks Keith Polishing the pipe and using wooden pillow blocks would be an answer almost anywhere. I am going to build one of these so that I can take pictures Sat, 21 Nov 2009 18:08:54 GMT kbs2244 http://groups.yahoo.com/group/multimachine/message/10881 http://groups.yahoo.com/group/multimachine/message/10881 That is why they are called hydraulic systems. (Hydro equals water) The original ones used water as the working fluid. Not a lot of freezing danger in the UK Sat, 21 Nov 2009 18:02:39 GMT David LeVine http://groups.yahoo.com/group/multimachine/message/10880 http://groups.yahoo.com/group/multimachine/message/10880 ... Okay, now you are in my area of expertise. Yes and no on the capacitors. If you want to overheat the regulators and fry the stuff to which they are Sat, 21 Nov 2009 17:00:37 GMT white_knight_411 http://groups.yahoo.com/group/multimachine/message/10879 http://groups.yahoo.com/group/multimachine/message/10879 Back in the EARLY early days of automobiles(model T anyone?), engines wore so fast, it was COMMON to have to rebore cylinders on a regular basis. One of the Sat, 21 Nov 2009 14:14:15 GMT jgdhiggins http://groups.yahoo.com/group/multimachine/message/10878 http://groups.yahoo.com/group/multimachine/message/10878 Michael, This sounds extremely useful, and I think I can imagine it, but unfortunately, lacking TurboCAD I can't open TCW files. Can you save it as a DXF? Sat, 21 Nov 2009 14:12:42 GMT Eike Welk http://groups.yahoo.com/group/multimachine/message/10877 http://groups.yahoo.com/group/multimachine/message/10877 ... Car alternators produce AC, but they have the rectifier built in. This website shows some photos of it: Sat, 21 Nov 2009 08:43:36 GMT David LeVine http://groups.yahoo.com/group/multimachine/message/10876 http://groups.yahoo.com/group/multimachine/message/10876 ... Look up the terms BUCK, BOOST, SEPIC and CUK converters. A simple buck converter (TL49xCN) can be built for under $5.00 and will run better than 80%