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Re: [TCML] Seaching for Mike Delosier

We used metal mesh used for window screening. We clamped it in aluminum jaws and combed out a few horizontal strands so the verticals would be nice and pointy. No touching the belt but very close.

We were given an actual High Voltage Research belt worth $500 at the time because scientists toss them once they start to degrade. Maybe it would be worth doing some research in your area to find a similar cast off?

Derek <tesla@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:

>     Are your pickups actually rubbing on the belt (it looks like it 
>from the video) or are they a used as combs,  near, but not touching?
>On 26/08/2015 23:33, Doug wrote:
>> You that are VDG enthusiasts should view this. I am using a conductive 
>> plastic for the pickups, works way better than the standard VDG 
>> pickups. Anybody wishing to try it email me personally for my address 
>> and send me a self addressed stamped envelope, I'll send you some.
>> Doug.J.  https://www.youtube.com/watch?v=YCWAH-J091c
>> On 8/26/2015 4:46 PM, Derek wrote:
>>> Doug,
>>> My vdg uses to rollers made from PVC and Nylon with a rubber belt. I 
>>> tried latex, but the real rubber one was much better. I'm not sure 
>>> exactly what the difference is. I may be able to find the link to the 
>>> source on ebay if you are interested.
>>>     Looking through various tribo-electricscale lists gives various 
>>> values for PVC, Nylon and soft/hard rubber.  So I went for a set that 
>>> was roughly top middle and bottom in the lists. The combination works 
>>> well for me.
>>>     On my VDG both rollers have a crown roughly 1mm higher in the 
>>> centre spread over 210mm. I found it very easy to set up the belts as 
>>> long as there was some slip between roller and belt and the belt 
>>> material was fairly stiff, otherwise the belt ended up folded over 
>>> multiple times in the centre.
>>> More details.
>>>     VDP Project: 
>>> http://www.extremeelectronics.co.uk/blog/1mv-van-de-graff-project/
>>>     Roller and belt detail: 
>>> http://www.extremeelectronics.co.uk/blog/1mv-van-de-graff-project/vdg-rollers-combs-and-drive/
>>> Derek
>>> On 26/08/2015 20:22, Doug wrote:
>>>> I have been using black neoprene with excellent results but always 
>>>> looking for something better.
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