Hi Phil At the moment I have two. One is 55 long by 16mm diameter and the other is 100mm long by 55 diameter. I am not sure whether you can class ceramics as...
Tell me about going crazy understanding the problems. I'm trying to mathematically model a VDG for a program I'm working on. It ain't easy. - Derrik ... -...
Hi Derrick – Good on ya Mate, but don’t ask me I have no idea on how you can model such a thing. With all the variables I would have thought ny impossible....
I must say that I admire you young guys with all the enthusiasm and intellectual horsepower to tackle these theoretical design challenges. I do admit, however,...
Richard you and me both Trev From: VanDeGraaffGenerator@yahoogroups.com [mailto:VanDeGraaffGenerator@yahoogroups.com] On Behalf Of Richard Linder Sent: Monday,...
In the archives I noticed two items on using PVC for the support column. Someone mentioned heating the PVC to remove moisture and then sealing the pipe....
Phil: I have considered baking and sealing a PVC support column, but I have not tried it. Shellac would be a good sealant and has been used for insulation in...
Is it actually really necessary to heat the pvc and then seal it I am now making a column out of pvc parts but the pieces are to long to heat and seal and I...
Hi Phil – Trev here mate From experience you will need to heat up the PVC Pipe to get rid of the microscopic water that PVC acquires. PVC is slightly...
Elmer: Like Trevor wrote, PVC can absorb moisture from the air and become conductive at VDG voltages. Heating it for a while will drive out most absorbed...
Hi Don Thanks I will try that, I never thought of the possibility of making my own little temporary oven, that is a great idea and the temperature does not...
Hi All What would then actually be a good alternative for pvc, I saw polycarbonate and pmma as apparently good alternatives but I find very contradicting...
Hi Elmer – There sure is mate. Polystyrene (clear) works well, plastic bottles like I used are good. PET Bottles that you get your soft drink in are good....
Hi all (One more time) The PVC leaks real bad above 8 inch ID. 12 inch ID tubes refuse to work at all even when charged by a 10 inch wide belt. Lyonel (...
Thanks for the advice on treating and heating PVC. Also I like the suggestion of glass - I'm wondering if I can convince a local glass blower to connect...
Phil: I was surprised to learn that many glass formulations can absorb atmospheric moisture. Pyrex, a borosilicate glass, does not have the problem. I don't...
Philip <pan00@...> wrote: <SNIP> ... Phil and others: I found the exact same item on eBay for US$23.80, including shipment from Hong Kong to my US address....
... That cheap enough for me to think about getting one - sounds like a good piece of equipment to have. I'm interested to hear how you like it after using it...
... Phil: I like the inexpensive laser tachometer. It displays constantly updated RPMs until the "test" button is released. It can also recall the last...
Hello all. I know these are probably basic questions, but I couldn't figure out how to effectively search through all the old posts. 1. Is it necessary or...
Hi Troy I can only answer the first one for you and that is round, square or triangle should not make a difference. Pity we can’t use ‘Sky Hooks’ that ...
Troy: My answers appear after each of your questions. Don Jacobs ... No. Round columns are easy to get as plastic pipe and tubes, but an open rectangular...
Hi Troy Yoy probably need a collector, if you mean the sphere/dome on top of the VDG, that is what determines the voltage you get from your machine, it is 30...
Has anyone tried making a Marx generator with Leyden jars charged with a VDG. It seems to me that, if you want to get high voltage with a voltage multiplier,...
I finally got my big pieces of solid pvc and nylon rod for my rollers, like dick I want to make them a press fit on the axel but what diameter should I bore in...
... Elmer, I had the same question, and I asked the tool and die maker who is making 1.75" diameter rollers for me in Teflon and MDS-filled Nylon. He said the...
Hello! I thought that others might be interested in this. On eBay a guy is selling 5" OD Pyrex tubes, 1/8" wall, 56" long. $120 includes UPS ground to the...
how could you actually see or feel that nylon (I have nylon 6 by the way) holds a charge, I have the same basic stuff for a belt that Dick has so vinyl and...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
