This is my favorite site, Everyone here , even some of the noobies, are so talented with projects, folks are supportive and friendly, so much knowledge, so many new ideas.....
Honda twins .net Allot of the same members as here, the concentration is on DOHC twins, been going there more often since the 450 project started, There are subtle differences from this site, I think that most of their projects are back to stock, some cafe',and I haven't been through their archives,but it seems to me, that there is more free thinking and machine shop type doing on SOHC.
Wrist twisters.com For riders, don't matter what you ride, although the 919 seems to be the favored machine there. Good bunch of people there too, they are more about the ride and not so much about the fix ,although there are some on that site that do restore machines.I doubt that most guys there change their own oil, and some can whine about dulling the paint with a degreaser for 10 pages before they try to fix it,and like here, everyone puts in two cents.
Just these 3 sites kept my sanity in check during long winter.