- 09/08/2012 -
Here is where I'm at currently in setting up my next launch, which will probably be a two balloon launch because of the weight issue:
In work: Ferrofluid chamber (copper pipe) mounted to a pillow block bearing, with a powered driveshaft (helicopter motor) powered by lantern battery(s). Custom neodymium magnet setup. Check out the project page for more details. Click here pertaining to the ferrofluid experiment.