Thursday, July 10, 2008

1991 Meccano Windmill - spinning

This is cheating as there's no wind indoors. So I'm spinning the thing and Dad is taking the picture. In a gale some nights later on a patch of grass, it spun faster than I expected with my hand holding the top to keep in vertical. In this picture we're seeing that an old fashioned camera's slow shutter speed can be used to your advantage :-)

Wednesday, July 9, 2008

1991 Meccano Windmill - from above

corresponding to a previous post  here is the pictures of the windmill from above :

Its positions 1, 2, 3 and 4 (but could as easily be 5, 6, 7 and 8).

1991 Meccano Windmill - construction

The whole thing (resting on 1970's carpet)

Close up of the 2:1 gear ratio .....
one of the arms...