Doug,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?
Derek 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._______________________________________________ Tesla mailing list Tesla@xxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla_______________________________________________ Tesla mailing list Tesla@xxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla
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