Take a look at this thread started in mid 2010 and now up to almost 400 pages of posts with lots and lots of plans posted:
Take a look here:
to search and find what has been posted in that very long thread.
Outerzone also has the plans available from download as a mirror to the RCG thread listed above.
Steve (WMD) has done a good job of indexing the thread and offering a second source to download the plans posted there.