Help with Van de Graaff Generator & PVC Pipe Setup

[demhaha]

Homework Statement

I have to make a van de graaff generator for my physics class.

Homework Equations

The Attempt at a Solution

I put it together and it doesn't work at all. Please help. Is the reason it isn't working is that i don't have a glass tube or something else?

Homework Statement

We build one using pvc pipe, thin rubber band, small dc motor, and 2 plastic pulleys, brush wire, and a can. I made it based on this tutorial http://scitoys.com/scitoys/scitoys/electro/electro6.html The only difference is that mine uses a plastic pulley where the glass tube should go.

Homework Equations

The Attempt at a Solution

Homework Statement

Homework Equations

The Attempt at a Solution

 

[lewando]

If that's the only difference, then its probably a good clue. Try using a glass (or maybe nylon) tube. The reason for it not working is rubber and plastic are on the same end of the "triboelectric series".