I seem to recall that they are available at auto parts
stores (I forget for what they are used), hardware
stores (our local independent stocks them & I believe
they are at Lowes & Home Depot) and appliance repair
shops (for vacuum cleaner power-head drives).
Perhaps you can "borrow" one off your vacuum cleaner
for the contest?
> Well, while powering up today for the weekend contest one of my Yaesu
> control box indicators failed to turn. So I pulled out one of the spare
> boxes and plugged that in... unfortunately when I turned it on the
> motor spun up to full speed but the needle didn't move! Opening it up
> showed a broke drive belt... looks like dry rot of the rubber as
> some other small cracks in the rubber. Besides looking like a real
> replace, does anyone know of a source for these little rubber belts? And
> how to specify them?? It looks to me more like an o-ring than something
> meant for driving a gear train. But anyway, its about 1.5" in
> about 4.75 in circumference and 1/16" thick.
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