I would hope there is a new generation on the horizon just thirsting for knowledge. I am still busy with the school static electricity show but admittedly zero...
I had some time tonight to mess around with the digital camera to see how well it would pick up VDG sparks. A little off-the-wall but something to break the...
I'm back in school (hooray!) and very busy with that. Finally getting a degree after all these years... I have plans to build a VDG with the clear tube from...
... Hi Shannon, Those capacitors can be positively lethal. You'll only get one chance to make that mistake.. I strongly suggest you join the Tesla Coil Mailing...
... Well mine is sprawled out on different parts of work bench and corner of floor 3/4 built, but; bought a new toy; Harley Sportster; and playing with that...
... Well, it's mid-winter here in Chicago and many of my projects are on hold until Spring when the garage warms up. I'd spent spent a considerable amount of...
... I've seen plenty of pictures of very large belt VDGs which use a metal pipe/tube capped with a metal hemisphere on each end. It would be easy enough to...
Don Jacobs wrote: <snip> What are the speed-limiting factors of your machines? You mentioned in one of your posts that you do not run your Variac wide open....
Wondering if there was a way to directly measure the strength of an electrostatic field, I found several references to a "field Mill". There are a few sources...
Hi Everyone, I have been working on my VDG. Things are progressing well. Let me give you some details. I have 2 inch diameter rollers. Nylon on the bottom,...
Hello all, I have been busy at work and with my projects but hope to upload some photos of my new projects. I have rebuilt my first VDG and it is direct driven...
Dick Linder, I finally got back to my VDG project. I have my shafts, bearings, Teflon and Nylon (Nylon 6/6 from McMaster-Carr... is that the "right stuff"?),...
... I finally got back to my VDG project. I have my shafts, bearings, Teflon and Nylon (Nylon 6/6 from McMaster-Carr... is that the "right stuff"?), My records...
Dick, Thanks for your prompt and informative reply. Things were getting a little slow in the group, and it's good to see some action. ... I'll try rubbing my...
... expensive. ... Charles, So did I. After doing some extensive (a couple months) online price shopping, I found a 2" Dia x 4" piece on eBay for $9.30 plus...
Don: Yes, this group has an immense aggregate of electrical talent and any sign of its demise is troublesome. I hope anyone out there who might not be posting...
Don: I have experimented with so many rollers, so l-o-n-g ago that your mention of a PVC coupling jogged my memory. Now I am not sure if the coupling or the...
... I'm no expert in VDG making, but- I think a smaller roller will -increase- the force separating the belt from the roller. Consider the same belt speed: the...
Dick, Thanks for your "positive" sharing attitude. The amount of information available here is "shocking". It must have been inspiring to operate the big VDG...
In general all parameters in a VDG will have a bearing on others. Belt speed relates to roller diameter which relates to centrifugal force -tracking-belt ...
Don: Thanks for adding the names. It does clear things up for the initial reader. Yes that VDG is the one that was built by Robert J. Van deGraaff. While at ...
... Oops, I was thinking of a constant roller RPM, and not belt speed when I suggested a smaller diameter roller. You are quite right about smaller rollers...
Hello All, I have uploaded some pics of the Upper terminal. They are in the Todd's Pics album. This was originally a helium tank, it took a lot of sanding and...
In an earlier post, I said, "I'll try rubbing my chunk of Nylon 6/6 with rabbit fur to see if it it dissipates the charge." This was after Dick Linder said he...
Not based on experience but a gut feel:- texturing or grooving etc the roller surface may reduce the surface area touching the belt to the point where the...
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