Hi all, I'm starting construction on my 3rd (& largest)VDG. I'm contemplating running two belts for a higher current (for a later possible project). My...
I have seen multiple belt unit with something like 6 belts side by side but that was on a professional particle accelerator and so the machine would probably...
Boston Museum of Science has the original (huge) VDG on demo daily. I had a tour of the guts sometime ago and had a chance to take a look at the multiple belt...
Have a look at Fig 3 in http://freepatentsonline.com/1991236.pdf Dont know if it's the best solution, with the belts going in that direction, but would be...
I was under the initial impression that you were thinking about two belts in one column. The patent appears to be a single belt in two generators. In that case...
Fig 3 describes two belts in one column, charging at the same polarity. And it suggests that you make two opposite polarity vdg to have a higher voltage across...
I use a vacuumcleaner motor which is just a universal motor but it is really powerfull, it works as long as you have a variac to control it, so maybe a old...
Elmer's suggestion is well taken. You should be able to get such a motor with very low cost. Just beware, universal motors use carbon brushes and generate...
You might also consider an old sewing machine motor & foot controller. I live near a high density housing complex & as I walk through the properties on my way...
Hi all i am new to the group and i am making a VDG for a science project. I have it all made and somewhat working. If i hold i splayed metal wire near the dome...
I made a very small VDG using a coke can, rubber band and small DC motor. The spark I generated was very small, but I was happy with the result. I was using my...
Hi My name is Nik from Doncaster in the UK I am new to this group and thought I would introduce myself by asking a simple question, what I would like to know...
Is it the length or the width of the belt that causes a difference in output or is it just the speen and what difference does each of these parts cause? ... ...
There are many factors that determine the "output" or attainable charge on the HV terminal. Just consider the belt a conveyor system for electrons which is...
Vamp, What dick tells you is correct. The column is the primary source of charge leakage in virtually any homebuilt VDG. Most of it leaks away around the...
Craig, Vamp & everyone else: One thing I forgot to mention regarding belt speed. If belt speeds become too high, the belt will tend to lift off the rollers due...
I had the same questions, look in the list of files for this forum and you will find a DOE or Factorial experiment I did on the theoretical strengths of each...
Hello folks! My name is Dave and I'm new to this forum. I'm 36 yrs. old and have been experimenting w/ high voltage apparatus and high energy electrical,...
hello, i'm building a VDG generator but i'm not sure about some details. The lower roller is plastic and the upper is the same but with an aluminium surface,...
Hello Dave and welcome! I was quite happy to have found this group as well. I must say it gets a bit tedious answering the same questions over and over again,...
Do we need an FAQ? If the members of the group think it's needed, we can create one. Everyone can submit to the moderator ( me ) questions ( and if you have...
I have had success with winding electrical tape around the junction between the sphere and the column. Crude solution, but it works. Just make sure you wrap...
Hey, I got some more information about rollers but I don't know the best combination. Aluminum, teflon, nylon and maybe scotch tape are apparently the best...
I think an FAQ section would be great! We have gone 'round and 'round on subjects like belt and roller material, dimensions, belt speed, column material and...
... we had good results but after chance the top roller nylon for a aluminum matter and we got a best result, This is my recomendation is depend about the...
I think that a FAQ would also be nice because it helps newcomers but also for people already doing a lot of stuff it would be helpfull because we can look...
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