Step 2: Timing Belt Pulley Assemblies

The first thing we did was build the timing belt pulley assemblies. There are a lot of possible ways to do this, but basically we used a collar-bearing-bracket-pulley-bracket-bearing-collar setup. We made several metal L brackets - just drilled a 1/2" hole in them for the ball bearings to fit in to. Then we saw some electrical conduit boxes at Home Depot and used them to make U shaped bracket. Both approaches are fine. It helps to have some shorter 1/4 rods to test these out - we used 2.5" pieces for ours.











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