Need some 1/2inch clipless pedals...

[RiceBurner]

Need some 1/2inch clipless pedals for a single speed project. Any ideas?

[nfmisso]

change the crankset out for ones that accept 9/16" treads.

Something like this will allow you to mount a sealed BB:
http://www.amazon.com/BB-Conversion-Bp-American-To-Euro/dp/B001G8TSPS/

[RiceBurner]

Changing crank definitely crossed my mind, thanks for the link. That convertion looks like the way to go.