4/26/15 - Uploaded c_cup.stl and qtr_weight.stl. This is a larger cup with a shorter arm to provide more RPMs in lighter winds, plus a governor weight that accepts US quarter coins to compensate for the greater weight of the larger cups. An exercise to see whether the notion of a purely mechanical anemometer was feasible, and as an amusing Christmas gift for my uncle, a retired NOAA meteorologist. It does work, though the windspeed indications on the scale are a complete and total SWAG!Printed without support. The rod is 1/8-inch brazing material, 23mm in length; the top pivot has a bearing created by pausing the print before the cone section started printing and dropping a "BB" into the hole (on my printer this was at layer 66). Print plate1.stl and plate2.stl or individual parts as follow: strut.stl 4 ea weight.stl 2 ea top.stl 1 ea cup.stl 3 ea hub.stl 1 ea plunger.stl 1 ea scale.stl 1 ea washer.stl 2 ea pointer.stl 1 ea pin.stl 9 ea pivot.stl 1 ea or lock.stl 1 ea mount.stl 1 ea All parts must move freely. This may require some cleanup such as sanding and drilling out various holes. I printed in HIPS and attempted to "case-harden" the pivot points on the governor linkage by painting them with Limonene and letting them dry - for ABS one could do the same with acetone. Put one U.S. penny in each of the governor fly weights and three in the end of the pointer arm. I added a few drops of cyanoacrylate to keep the coins in place. Assemble the governor section as shown in anemometer.png, with a pin.stl through each of the pivot points. If they seem too loose you could glue them, but I haven't found it necessary yet. Connect plunger.stl and pointer.stl by fitting the tab on the plunger into the slot on the pointer, then rotating the plunger counter-clockwise to lock them together. They must slide freely. Connect scale.stl and pointer.stl by inserting a pin.stl through one washer.stl, then through the pivot hole in the pointer, the hole in the scale, and back up with the second washer. (Or you could edit the .scad file to produce a shorter pin and omit the washers -- I preferred to make them all the same length.) Final assembly is as shown in anemometer.png, using pivot.stl if you want to let the scale-and-pointer assembly weathercock, or lock.stl if you want it to stay in one position for readability. (lock.stl only fits one way: the wider slots fit mount.stl; the narrower ones fit scale.stl. You can adjust the scale's angle around the axis in 30-degree increments.) Note: If you wish to work with the SCAD file, you will need the Write.scad package by Harlan Martin, available at http://www.thingiverse.com/thing:16193, otherwise the scale calibration numbers at the end of module speedscale() will not be generated.