- Hi All,
I haven't built my own generator yet, but I own the small and large
generators from Science First (older large model).
When the price of the belt for the large generator went up to $35 each
(2" wide neoprene) I considered alternatives. My inspiration came from
the R.A.Ford book 'Homemade Lightning.'
I used neoprene strips(1/32") from McMaster-Carr and butt glued the 45
degree splices using super glue gel. It is a bit tricky, but pulling
on some test joints, the belt failed before the joint did almost
always, and I stretched it way beyond any force that it would
encounter in use. I needed some stretch in the band since I could not
adjust the pulley spacing. The strips come in 36" lengths so it took
two to make the band. They offer several hardnesses and elongation
limits of the material and I need to do a little more experimenting.
My homemade belt generated about 90% of the original belt current. Not
too bad since it only cost me 10% of a replacement belt. Maybe some
harder or softer neoprene strips will work better. I don't remember
which one one I used but it was somewhere in the middle to soft area.
I realize that this material won't work for large machines where the
belt may tend to stick together because of its flexibility, but it
works very well on smaller machines.
From: VanDeGraaffGenerator@yahoogroups.com [mailto: VanDeGraaffGenerator@yahoogroups.com ] On Behalf Of trevor_mixie
Sent: Monday, March 31, 2008 4:41 AM
Subject: [VanDeGraaffGenerator] Belts
Hi Richard and Don
Have any of you tried the Pirelli rubber belt. It does work well
The only Pirelli rubber I have ever tried was on the wheels of my
car... nice tires.
--- In VanDeGraaffGenerator@yahoogroups.com, "trevor_mixie"
> Hi Richard and Don
> Have any of you tried the Pirelli rubber belt. It does work well