---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Sun 03/07/10: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:39 AM - Chat Reminder for "Digesters" (George Race) 2. 02:12 PM - Reducing a hole diameter? (alternator pulley) (Michel Therrien) 3. 02:41 PM - Re: Reducing a hole diameter? (alternator pulley) (jaybannist@cs.com) 4. 04:26 PM - Re: [Probable Spam] Reducing a hole diameter? (alternator pulley) (Larry McFarland) 5. 04:41 PM - Re: [Probable Spam] Reducing a hole diameter? (alternator pulley) (Larry McFarland) 6. 06:54 PM - Re:Reducing a hole diameter? (alternator pulley) (Michel Therrien) 7. 07:16 PM - Re: Reducing a hole diameter? (alternator pulley) (Ron Lendon) 8. 07:41 PM - Re: Reducing a hole diameter? (alternator pulley) (JohnDRead@aol.com) ________________________________ Message 1 _____________________________________ Time: 08:39:04 AM PST US From: "George Race" Subject: Zenith-List: Chat Reminder for "Digesters" Live Chat Room every Monday evening around 8:00 EDT www.mykitairplane.com Click on the Chat Room link at the top of the page. George ________________________________ Message 2 _____________________________________ Time: 02:12:56 PM PST US From: Michel Therrien Subject: Zenith-List: Reducing a hole diameter? (alternator pulley) Hi folks (especially those of you that are machinists ;-) I made pulley for my alternator from an aluminum plate. I have a lathe, but I'm far from being a machinist. I was pretty proud of me until about half an hour ago. I made the center hole about .003 to .004 to large in diameter. (ouch!) (I cut .0015 to .002 too much). Now, the pulley is pretty slack on the shaft. Is there a good way to make it the proper size (adonizing, other means) that will be reliable... or do I need to start over and use this one as a failure trophy in my workshop? Thanks! ---------------------------- Michel Therrien CH601-HD, C-GZGQ http://mthobby.pcperfect.com/ch601 http://pages.infinit.net/mthobby __________________________________________________________________ Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite sites. Download it now ________________________________ Message 3 _____________________________________ Time: 02:41:56 PM PST US Subject: Re: Zenith-List: Reducing a hole diameter? (alternator pulley) From: jaybannist@cs.com Michel, We used to send the new kid to the tool crib to request a hole shrinker. Just a part of a good education. As for myself, I would proudly display a custom-made pulley with all my other "trophies". Yes, I'm implying tha t you have indeed made yourself a "trophy". And a hint - This probably won't be the last "trophy" you make. Re-making a part is always easier than making the first botched one. Please don't be discouraged by this kind of experience. We all do it. Keep after it and you'll get there, trust me. Jay Bannister -----Original Message----- From: Michel Therrien Sent: Sun, Mar 7, 2010 4:08 pm Subject: Zenith-List: Reducing a hole diameter? (alternator pulley) Hi folks (especially those of you that are machinists ;-) I made pulley for my alternator from an aluminum plate. I have a lathe, but I'm far from being a machinist. I was pretty proud of me until about half an hour ago. I made the center hole about .003 to .004 to large in diameter. (ouch!) (I cut .0015 to .002 too much). Now, the pulley is pretty slack on the shaft. Is there a good way to make it the proper size (adonizing, other means) that will be reliable... or do I nee d to start over and use this one as a failure trophy in my workshop? Thanks! ---------------------------- Michel Therrien CH601-HD, C-GZGQ http://mthobby.pcperfect.com/ch601 http://pages.infinit.net/mthobby __________________________________________________________________ Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite sites. Download it now ________________________________ Message 4 _____________________________________ Time: 04:26:30 PM PST US From: Larry McFarland Subject: Re: [Probable Spam] Zenith-List: Reducing a hole diameter? (alternator pulley) Hi Michel, I think I've done this at one time too. The logical thing would be to cut a larger hole to eliminate the key and do a press fit flanged insert. Then cut the key again. The second alternative would be to make a flanged center piece that you could bolt into the pulley and have the hole and key at the ready on assembly. In the second alternative, you'd only need to thin the section down and make a good centering thin flanged insert. Doing anything with welding would deform the piece, so I'd avoid temperatures that high. Tho a thermally done interference fit could be useful. Best regards, Larry McFarland 601HDS at www.macsmachine.com Michel Therrien wrote: > Hi folks (especially those of you that are machinists ;-) > > I made pulley for my alternator from an aluminum plate. I have a lathe, but I'm far from being a machinist. > > I was pretty proud of me until about half an hour ago. I made the center hole about .003 to .004 to large in diameter. (ouch!) (I cut .0015 to .002 too much). Now, the pulley is pretty slack on the shaft. Is there a good way to make it the proper size (adonizing, other means) that will be reliable... or do I need to start over and use this one as a failure trophy in my workshop? > > Thanks! > > ---------------------------- > Michel Therrien CH601-HD, C-GZGQ > http://mthobby.pcperfect.com/ch601 > http://pages.infinit.net/mthobby > > > __________________________________________________________________ > Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite sites. Download it now > > ------------------------------------------------------------------------ > ________________________________ Message 5 _____________________________________ Time: 04:41:47 PM PST US From: Larry McFarland Subject: Re: [Probable Spam] Zenith-List: Reducing a hole diameter? (alternator pulley) Hi Michel, I think I've done this at one time too. The logical thing would be to cut a larger hole to eliminate the key and do a press fit flanged insert. Then cut the key again. The second alternative would be to make a flanged center piece that you could bolt into the pulley and have the hole and key at the ready on assembly. In the second alternative, you'd only need to thin the section down and make a good centering thin flanged insert. Doing anything with welding would deform the piece, so I'd avoid temperatures that high. Tho a thermally done interference fit could be useful. Best regards, Larry McFarland 601HDS at www.macsmachine.com Michel Therrien wrote: > Hi folks (especially those of you that are machinists ;-) > > I made pulley for my alternator from an aluminum plate. I have a lathe, but I'm far from being a machinist. > > I was pretty proud of me until about half an hour ago. I made the center hole about .003 to .004 to large in diameter. (ouch!) (I cut .0015 to .002 too much). Now, the pulley is pretty slack on the shaft. Is there a good way to make it the proper size (adonizing, other means) that will be reliable... or do I need to start over and use this one as a failure trophy in my workshop? > > Thanks! > > ---------------------------- > Michel Therrien CH601-HD, C-GZGQ > http://mthobby.pcperfect.com/ch601 > http://pages.infinit.net/mthobby > > > __________________________________________________________________ > Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite sites. Download it now > > ------------------------------------------------------------------------ > ________________________________ Message 6 _____________________________________ Time: 06:54:14 PM PST US From: Michel Therrien Subject: Re:Zenith-List: Reducing a hole diameter? (alternator pulley) Thanks guys, After I wrote my inquiry, I was thinking of a couple of simpler approaches... Anodizing puts .001" of material back... which may make the pulley OK....? Another tought.. but not sure about that one... Putting a layer of JB weld and back on the lathe to size it properly (should I trust jb weld enough for that purpose? I know I "welded" my fluting tool for the ribs with that at the beginning my my project in 1999 and the pins and plates are still in place (and the tool fell off several times). If not... I guess I'll just start from another block of aluminum... ---------------------------- Michel Therrien CH601-HD, C-GZGQ http://mthobby.pcperfect.com/ch601 http://pages.infinit.net/mthobby __________________________________________________________________ Looking for the perfect gift? Give the gift of Flickr! http://www.flickr.com/gift/ ________________________________ Message 7 _____________________________________ Time: 07:16:25 PM PST US Subject: Zenith-List: Re: Reducing a hole diameter? (alternator pulley) From: "Ron Lendon" If it is a permanent mount you can shim the assembly. Use one piece of shim stock cut to the width of pulley wrapped completely around the shaft except for the area where the key is. Or just make another one, it's all about learning anyway. -------- Ron Lendon, Clinton Township, MI WW Corvair with Roy's Garage 5th bearing Zodiac XL, ScrapBuilder ;-) http://www.mykitlog.com/rlendon Read this topic online here: http://forums.matronics.com/viewtopic.php?p=289590#289590 ________________________________ Message 8 _____________________________________ Time: 07:41:51 PM PST US From: JohnDRead@aol.com Subject: Re: Zenith-List: Reducing a hole diameter? (alternator pulley) Hi Michel; The first was a learning experience, the second will be perfect. Have fun. Regards, John CH701 - Colorado - Jabiru 3300 Cell: 719-494-4567 Home: 303-648-3261 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/zenith-list Browse Digests http://www.matronics.com/digest/zenith-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.