Just saw this video on youtube. The next step of the Jamis Xenith TT bike.
http://www.youtube.com/watch?v=Knlo-9_jA1Q
And no, it isn’t Rick Astley. 
Just as a note Herbert, I’ve been doing oil flow studies on frames and riders since 1990, it leaves all the same trace lines as French powder and doesn’t dry so fast so you can yaw the test object and see how it changes at different angles. We also use oil flow on car testing when going much faster speeds. I also, occasionally use a Helium bubble generator, especially for helmets, this will show very small vortices or reverse flows, when testing at wind speeds down to 7-9mph.
John - from the other thread: how do you like the Wilier Cento? I’ve got one coming (a Cento Uno) and am super excited (new road race frame)
It appears that these flow studies would only work on naked frames and not really on painted frames with a clear coat. Is that correct?
I’m sure I will be labled as Bias but I really like my Cento Crono. The big chainstays help it to climb very well, it seems to descend pretty fast. Because I can only get way low in the front end in my mind, I have a bunch of spacers and a hi-rise stem on it so my legs don’t bash my stomach, it still handles pretty good this way.
John
I find the helium much better and cheaper too , down side is that to have a tiny helium bubble (smaller as 1 mm) you need good equipment
But i love this method above chalk smoke oil and so on…
Well i use helium with piv and CFd interaction (to see realtime flow and the forces and vectors realtime)