У вашего броузера проблема в совместимости с HTML5
An extension of my gear reduction model (http://www.youtube.com/watch?v=_X5Sj0VjTdg) using a similar worm/20 tooth gear with a 3 tooth escapement to give a 1/60 reduction for the seconds hand. The mechanism uses a total of 14 gears (including escapement and pulley reduction gears) in a really compact design.
LEGO Digital Designer plans available at
http://www.alexallmont.com/files/Mini%20LEGO%20Clock/Mini%20LEGO%20Clock.lxf
The escapement is a compromise on the space, not the most efficient but the challenge was to make as small as possible. It works pretty well when balanced correctly.
In this video the clock is running a little slow.