A turnstile project might be modified to make an anemometer for Jr.FLL 2008.
For the Cities and Transportation sets, use 2 stud beams instead of the angle blocks.
Place the crown gear so that it rests on the blocks.
For the Cities and Transportation sets, use two 4 stud beams instead of the blocks.
Count how many "people" can walk through the turnstile for the indicator
to go around once.
For the Cities and Transportation sets, use 24 tooth gears instead
of 40 tooth gears.
Count how many "people" can walk through the turnstile for the indicator
to go around once.
Count how many times "people" can walk through the turnstile for the
indicator to go around once.
Use a gray connector pin and a 2 stud and a 4 stud beam to make a catch
so that people can only go in.
This is an example of a pawl and ratchet.
Place it so that the 4 stud beam rests on the crown gear.
Try making an anemometer by using a long axle and adding wheels for
cups.
The indicators work much like those on a gas meter.
