beatnik, I just found this thread, and after putting in my measurements, the results are all within 0.5cm of my current setup, so following your chart, I guess I'm pretty well set up already.
One thing that isn't clear from your chart though, is that on the first picture (of the litesped MTB), the saddle set back from the BB is at 8.6cm, with a comment that it's a very important measurement (which is true).
Later on, the stem length calculation is given for different setback seatposts. This is where I have to disagree with your chart - the stem length should always be the same, because the saddle position is fixed for a particular rider.
It is wrong to say that if I change my seatpost to one with different offset, then I should change my stem length to compensate. If I change my seatpost, it will clamp the saddle rails in another position, but the saddle position relative to BB will not change, so stem length will be the same.

foz

Given that beatnik is a fitting guy I'd assume that when he says that someone changes his seatpost it's to change the fit, not the color or weight or whatever.

If you keep your saddle position the same you obviously won't change your stem. But if you change your straight seatpost for one with setback to give you a different position you have to change your stem.

So you're not actually disagreeing with him, the way I see.

OK, I think I understand what you're saying now. But isn't it better to base the stem length on the saddle position and not the seatpost? What I thought the chart was saying was that for any bicycle I could use an offset seatpost and shorter stem, or zero offset seatpost and longer stem, in each case clamping the saddle in the centre of the rails, but these two combinations obviously give very different riding positions.

I read in your first post that you're in Spain - where are you exactly? I'm in Valencia.

thanks, foz