Science Experiment

A car made from a spark plug, balanced with a counterweight, spinning on top of a post.  

Fascinating for CyclopsJnr, especially as if you really get it going it keeps spinning for ages.  

CyclopsJnr wanted to spin it and time it to see which of us could keep it going longer. 

I won on 6 minutes 14 seconds, but he managed a pretty creditable 5 minutes 12 - showing considerable fine motor skills to get it going that fast!