On Jul 19, 8:00*am, "Karl Townsend"
wrote:
I'm thinking of running three timing belts side by side on one pair of
pulleys. Do you think I can get away with just bumpers on the outside edge
of the pulley and three belts running beside each other? Or will they end up
climbing on top of each other? In other words do I need belt guide bumpers
for each belt? (hard to do in the space available - only room for two belts
then)

.200 pitch by 3/8 wide belt FWIW. I thought I had seen 1" wide belting in
.200 pitch when I started this design. Now, no can find.

Karl

Karl - not being all that experienced in these things, but was
watching "Scrapyard Challenge" recently and they had a similar problem
with multiple belts climbing over each other. The solution was
meticulous alignment of the 2 shafts so they were exactly parallel to
each other. And these belts were getting a real hiding.....

Andrew VK3BFA.