Quote:
Thanks for the help, Ian. I reuploaded the document and a reduced size JPG.
These are the most likely relevant values to what you are looking for.
Saddle top to BB - 70
Drop from Saddle to pad top - 2.........would the math make it 70-2=68?
Pad ctr/tip of saddle 61.5 and saddle tip to C. BB - 7.8 and Saddle tip to C. HB- 61......... Would the math make it 61.5-7.8= 53.7
or is the information XY tool HB X-526 Y-592?
I believe he did his math from the tip of the saddle and not the bottom bracket.
bluedinosaur,
Okay, let's work through this.... you're thinking is logical: we have the set back of 78mm and we have this "Pad ctr/tip of saddle 61.5" - If this means the distance from the tip of the saddle to the center?? of pad is 615mm we could subtract the setback of 78 we'd get 537. And then if I assume that the pad is 100mm long (most are) we subtrack 50 and get a Pad X of 487. Oh boy, there's potential for a lot of noise in all these guesses. The Pad Y isn't much better... sure Seat Height is 700 and Drop (or Pad Height) is 20mm... so we're guessing your Pad Y is 680. If I were to try and prescribe off those nubmers (Pad Y of 680 and Pad X of 487) you'd be a size Large in the SLX and the seat height of 700 wouldn't be possible. So... we get into trouble with all these assumptions.
You paid money for this fit, you own the numbers, and the numbers you need are not here. If you are interested in an article that is basically bible of our situation read
THIS We need your
saddle height and we have it, it's 700mm (Saddle top to BB - 70)
We need your
Pad X and we don't have it. It is one of
THE numbers that allows all fitters to prescribe a tri bike.
We need your
Pad Y and we don't have it. It is the other of
THE numbers that allows a prescription.
Could you call your fitter and make this ask - and it's a small ask. Tell them you need the Pad Y and Pad X (to the rear of the pad) (they might call it Pad Stack and Pad Reach). All they'll need to do is positon their fit bike into HY of 592, HX of 526 - put the same Zipp Vuka bar on it that they used during your fit, and then measure from the center of the Bottom Bracket to the back of the pad. In anybody's fit studio this might take 3 minutes. they don't have to put the saddle back on, they don't have to position the saddle rail X/Y, it's just about the front end. If there's any issue of misunderstanding have the fitter call me at three one oh! 924 Seven 3 six two. There it is.. my attempt to foil AI.
While we're waiting for that here's what I'd like to do... Can you reply with your height and your inseam... and any extreme issues (fused vertebrea, supremely tight posterior chain [hamstrings/glute/low back], any semi freakish abnormalities). I like a chance to test the system I'm using while we wait for the fitter to come back with your numbers.
Ian
Ian Murray
http://www.TriathlonTrainingSeries.com I like the pursuit of mastery
Twitter - @TriCoachIan