http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/ Van de Graaff Generators Wed, 28 Oct 2009 21:09:32 GMT ToddA http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2479 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2479 Ned, I have also been using skateboard wheel bearings and while they eventually will leak, they usually start to get 'loud' before they leak so check them for Wed, 30 Sep 2009 01:30:29 GMT james moore http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2478 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2478 I used a couple of skateboard wheel bearings. Sealed and capable of much heavier service than the VDG will use. Sun, 27 Sep 2009 15:28:47 GMT Richard Linder http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2477 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2477 Study the effects of proper belt crowning. A roller that is crowned properly will keep the belt running true. The degree of crowning is dependent on the belt Sun, 27 Sep 2009 15:27:42 GMT Richard Linder http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2476 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2476 Ned: I have used OILITE bearings and Miniature roller bearings. In my VDGs with good results. Bearings would have to get quite warm to vaporize the lubricant Sun, 27 Sep 2009 13:18:00 GMT acmqsoueu http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2475 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2475 ... Grease and oil are not a so big problem. It's easy to clean eventual spills. Sealed ball bearings don't leak. I have used ball bearings in several VDG Fri, 25 Sep 2009 23:17:03 GMT Edward http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2474 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2474 So fall is here, the humidity is falling -- time to fire up the VDG. I've been thinking of upgrading my VDG, which currently runs at about 1000 RPM using nylon Mon, 21 Sep 2009 22:08:10 GMT acmqsoueu http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2473 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2473 ... This happens because of the interconnected Leyden jars. Probably the interconnection is floating, and so if you ground one terminal you increase the Mon, 21 Sep 2009 18:22:42 GMT mebikerider http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2472 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2472 I check in from time to time. I'm more of a Wimshurst guy, though. Still experimenting around... I attached a flat brass plate to one of my Wimshurst Thu, 17 Sep 2009 19:20:15 GMT Richard Linder http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2471 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2471 grayco4: get well soon and for now, use your mind to plan future spark filled adventures. Dick _____ From: VanDeGraaffGenerator@yahoogroups.com Wed, 16 Sep 2009 01:41:41 GMT Earl Stirling http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2470 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2470 I monitor and occasionally contribute. I keep our 3' generator running. ... Earl Stirling Swiss Army Knife e x p l O r a t o r i u m 3601 Lyon St San Wed, 16 Sep 2009 01:41:33 GMT radioshedtw http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2469 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2469 ... Most certainly, I've just joined the the group and am finding the information in the posts invaluable in setting up my VDG. I am still a beginner at Wed, 16 Sep 2009 01:41:31 GMT James Moore http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2468 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2468 Just finished mine. Sent from my iPhone Wed, 16 Sep 2009 01:41:26 GMT cheeto4493 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2467 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2467 ... I'm a newbie to this group, and am working on rounding up materials to build one. ~Travis Tue, 15 Sep 2009 17:21:24 GMT grayco4 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2466 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2466 I keep checking in but an injury has changed all my priorities. I can't work on fun stuff right now but I have picked up a couple of A.D. Moore's books on Tue, 08 Sep 2009 17:32:00 GMT Richard Linder http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2465 http://tech.groups.yahoo.com/group/VanDeGraaffGenerator/message/2465 Hi Todd: I have all posts forwarded to my e-mail and (sadly) there has been no activity for some time. I donated my 8' VDG to the local school system's Science