Swing Bridge
![Picture](/uploads/1/8/3/0/18306261/7462809.jpg?1362967189)
This model of a Swing Bridge used a nice combination of worm gear, chain drives and then bevel gears to drive the small gear that turns the bridge which sits on top of a large gear wheel.The drive chain is all reducing the speed to help recreate the slow movement of the swing bridge.
Built : July 2011