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...
The choice of roller material depends somewhat on the belt material. Ideally you would want the belt material ½ way between the roller materials on the Tribo...
Welcome Dave, just my two cents. I used two 14 inch salad bowls from Ikea ($11 each) The process I used to eliminate the sharp entrance hole is as follows. Put...
Has someone experimented with a glass roller?? This with a teflon roller would be a good combination, they are very opposite in the tribo series, and for my...
Craig, Sorry for the delayed response!! I used to constantly look at everything that could possibly be used for high voltage terminals/collectors. I worked in...
Hello everyone! I posted a drawing depicting an idea for a different storage terminal configuration that might be good for the "DIY" experimenter. It is based...
That looks like a great idea, I thought of something like that a really long time ago but it was not usable because I wanted to use a propane tank and that...
Hi Dave: I think if you do some searching you might find sources for aluminum hemisphered and toroids that will weld the two together for less than $500. O.W....
Hi Dave: That's an interesting idea. If a wood turning lathe is available, the ring can be made in multiple pieces and can therefore be assembled into an...
Elmer, The main principle of the design is to use a material that conducts to a certain extent at "high voltage" in order to relieve the tension and reshape...
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