Gray-B-Gon wind-powered evapotron for graywater disposal

Step 27: Make the drive belt

Picture of Make the drive belt
Four nylon stockings or legs from sheer panty-hose

The drive belt is made of four nylon stockings or sheer panty-hose legs, tied together with fisherman's knots.

First tie a loose overhand knot close to an end of one leg; slip the end of another leg through, and tie an overhand knot in it that encloses the first leg.  Tighten the knots a little by pushing each overhand knot closer to its leg's end; avoid pulling on a short end.

Repeat with a third and fourth leg to make a long belt, then fasten the ends to make a loop.  Wet the belt and give it a stretch.  Loosen the wing nuts on one gusset, enough to slide one wheel axle out of its bracket. Put the belt around the drum and the pulley wheel and retighten the wing nuts.

If the belt isn't stretching at all, shorten it by sliding apart one or more fisherman's knots.  If the belt is lifting the drum's underside, it may be too tight and will lift the drum fabric away from the water in the tray.
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