Don't bash guys for having fun at Zero Gravity's expense. The company owes them nothing, and they owe the company nothing. I realize some of you will be getting a free set and are trying to keep your attitude positive because of it, but don't deprive a person a little fun because of your agenda. It is almost comical the way some of you defend the crank design. He has a product that is years behind schedule. He "wants to get it right?" Correct me if I am wrong, but he is doing simple CNC work to aluminum to make a bike go forward, not trying to discover a way to make cold fusion or some other highly complex molecular process happen. It isn't rocket science. I don't even want to think how much revenue he has lost with the delay of the release. Not to mention the bad press he is getting as a result of revealing them at Interbike 1992(he he he) and then not producing them for years later.
I think you've over simplified things by a lot. Yeah, there is a product that will be CNC's. However, in the time between when that product was designed and today, the designer left, the factory was moved, and who knows what else has happened. None of us sit in on their company meetings.
The idea that just because a crank only makes a bike go forward means that you should be able to produce one just by flipping a switch.....well, that's bollocks. By the same thinking, Shimano and Campy should have had their electric versions ready years ago; SRAM should have only taken a couple of weeks to design the relatively few, simple parts that make up brifters, derailleurs and the rest of the lot; and no bike manufacturer should have to spend any time at all doing testing.
I'm also sure that ZG never considered, at all, any of the other crank failures there have been with lightweight cranks: Pulsions, Time cranks, Propellors and similar cranks.......nah. Not worthy of nary a concern.
Heck, it's likely that ZG and the related company only work on the brakes and the cranks, so they've got all the time in the world.