Thanks for doing this!
Pad x = 385 back of pad
Pad y = 720
From a bike fit for my first tt bike.
81cm inseam if that helps
i recommend you do not attempt to buy a bike to fit those coordinates. at least not yet. i want to see your position first. and then let's have a "fit negotiation". then we'll talk about a bike that matches your coordinates.
Thanks for your reply. Are those values pretty out there? Unfortunately I donâ€™t currently have a picture to hand from the fit, and this is for my first tt bike so no current position picture either. Obviously itâ€™s not the same but I ride a regular 58cm frame road bike thatâ€™s stock except for the saddle without issues. Should a tt bike require that much modification? Sorry Iâ€™m new to this as Iâ€™m sure you can tell.
385mm to back of pad is, for profile design, 425 to pad center. so, you're 720mm x 425mm to pad center, and here's how people tend to be positioned, if you place those coordinates on a cartesian graph.
there's a slope, roughly, and if you pick a point on the small end, say, 575mm x 430mm, and on the large end, maybe 675mm x 550mm, and you draw a line between them, that's the center of the slope. as you vary from that slope you vary from the norm and, in this case, the norm is represented by pro males (red squares).
if you're going to vary, then, why? because you're not a pro. okay. how much variance does that earn? because i'm long leg short torso, or the other way around. because i don't stipulate to the norm, and i think the cockpit should be longer, pads further in front. okay. but that's not you.
there's one person among all slowtwitchers - i don't know who - that has a pad xy roughly similar to yours. it's the blue triangle at the far upper left of the chart.
if you're going to be set up that way, okay, but, why? if i was going to drop a lot of coin on a nice new tri bike, i'd want to answer that question. if you can successfully answer it, you're satisfied with it, fine. just, what ian is going to do is precisely, mathematically, match a bike to fit underneath your pads. i recommend you make sure that's where your pads ought to be, first.