You didn't change frame geometry, you changed steering geometry! They're not the same, which is my point. You can only really change "effective" frame geometry through the offset of your seat post; head angle can't be changed. If you straightened your curved blade fork, not only did you change the rake, you changed the blade length, so the frame may not ride plumb anymore. I don't mean to be combative here, but I think the guy really wanted to figure out what some of this stuff means. My intent was to point out that fork variables like rake and trail are true variables within a frameset (frameset: frame and fork in concert) since the fork can be changed. Headtube angles and seatube angles are fixed (until you begin to offset your dsaddle one way or the other with a rear or forward ofset seatpost). Good thing JayB didn'st ask about how all this relates to stem length.....