Re: Van Der Graaf Rollers (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Sun, 5 Oct 2003 18:18:50 +0100
From: colin.heath4 <colin.heath4@xxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Van Der Graaf Rollers (fwd)

HI DAN,
                YOU WANT TO TAPER THE WHOLE HALF ROLLER INTO THE MIDDLE SO
THE MIDDLE OF THE ROLLER HAS A NARROW RIDGE HIGHER THAN THE REST.
THIS KEEPS THE BELT TRACKING CORRECT. WE USE IT ALL THE TIME IN MY BUSINESS
AND IT WORKS A TREAT
CHEERS
COLIN
----- Original Message -----
From: High Voltage list <hvlist@xxxxxxxxxx>
To: <hvlist@xxxxxxxxxx>
Sent: Sunday, October 05, 2003 5:49 PM
Subject: Van Der Graaf Rollers (fwd)


> Original poster: Steven Roys <sroys@xxxxxxxx>
>
>
>
> ---------- Forwarded message ----------
> Date: Wed, 01 Oct 2003 19:44:30 -0700
> From: Daniel Reinders <danreind@xxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: Van Der Graaf Rollers
>
> Hi All,
>
> I'm wondering how bulbous the rollers of a Van Der Graaf machine should be
> to keep the belt on track?  I've had a nylon and a pvc roller (1.5" diam)
> lathed out with a slight bulge, approximately accomplished by lathing out
at
> 10-15 degrees from the centerline.  But my 6" Theraband wants to fold over
> in two, which means I could get by with a 3" band I suppose but only by
> compromising my charging rate.  Also what shape is most appropriate for
the
> roller - are we talking quasi-circular over the full length, or can the
main
> portion be flat with just the ends being strongly tapered?
>
> Thanks for any advice,
>
> Dan Reinders
>
>
>