Things are progressing a bit slower than expected but are finally coming together. I'd originally planned to use a small 12-24V motor with a 50W rheostat to...
Hi John: Since rehostats are basically a variable resistance in series with the load and source voltage, the result is a poorly regulated power source for the ...
John and Dick: I'm building a medium sized machine. I've not found any reasonably priced spheres yet. I've looked at gazing balls, but the best price I've...
John: My small VDG uses an 18" stainless gazing ball and if I recall correctly I paid around $75 plus shipping from a garden supply place in the south eastern...
... ... > I'm building a medium sized machine. I've not found any reasonably > priced spheres yet. I've looked at gazing balls, but the best price > I've found...
Hi all, I still haven't built any Van de Graaff, just a whimshurts in the past. What about using a long thin blade that you first make hot on fire to make a...
I've had good luck cutting the stuff by putting down masking tape, marking on the tape and then cutting with scissors. I believe the stuff is treated with...
Hi all , A very nice book is : Electrostatics Accelerators / Fundamentals and Applications by R. Hellborg ( Springer Ed.2005) Here is a fragment of chapter 6 :...
I hope that I'm not breaking VDG forum etiquette by adding these occasional progress updates as replies to my own thread. My VDG project has turned out to be...
Hi John: You said it in a nutshell. the learning experience is terrific and the fellowship on the forum is outstanding. There are some items, cylindrical in...
Post your questions on this FORUM. Lots of help here. There are just too many topics within the VDG framework to guess at what issues you want to discuss. ...
i've tried searching for a post that would answer my question; there are hundreds of posts and i haven't seen it. i was given a high rpm vaccume sweeper motor...
i just want to have a 5pages english text about any topic on vande graff like "how doeas it work",... and also i need the webpages which i used.my project...
Fan controls will regulate the speed of universal motors such as what you have from a vac. However, since these devices are solid state they will frequently...
yes of course, you can use a dimmer to control motor rpms. Just choose a dimmer with the right output (watts). a vacum cleaner motor usually has lot of watts...
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I can send you some infos and links http://members.aol.com/lyonelb/vdg.html http://members.aol.com/lyonelb/vdg2.html http://members.aol.com/lyonelb/vdg3.html ...
what about grounding the VDG to a cold water tube ? ... what you ... will ... failure is ... VDG ... is very ... size of ... with the ... between ... the motor...
Thank you ... From: Ing. Sandro Anderlini <sandro.anderlini@...> To: "**N@Z@NIN**" <VanDeGraaffGenerator@yahoogroups.com> Sent: Thursday, November 1,...
I do have another question if you don't mind. I have seen many files that said the builder used a nylon bottom roller and a aluminum top roller, many others...
I have built two VDGs, one large and another larger. See my pictures for construction ideas. I have tried many combinations of top rollers, bottom rollers AND...
Tyvek (house wrap) belts work great and the material is cheap if you can find some scrap somewhere. Its easy to cut to size and glues together well with crazy...
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