Replying from the Cervelo P5D thread, appreciate your help. I am interested in the 5PD but I have doubts whether this is a good bike for me. Below is my post from the other thread on the basebar plus additional fit inputs.
â€śI am between 6'3 and 6'4 (192cm). I like the P5 Disc and would be (grudgingly) prepared to spend extra on the EX-10 riser that I would definitely need for the pad width. However I also spotted that the basebar is only 38cm wide in all frame sizes and unless I am mistaken it cannot be swapped. I have broad shoulders and my handlebar on the road bike is 44cm. Is it a reasonably safe assumption that this will be a very unhappy relationship with the basebar and the P5d is just not for me?â€ť
I also have done a fit the other day to understand my coordinates. They are pad Y 690, pad X 451 back of pad. But it must be said that he fitter was conservative and didnâ€™t want to rotate me further and drop the cockpit lower, arguing that the pad drop of 124mm is quite substantial (my saddle height is 843mm, long legs) and that my retul angle (torso to horizontal?, not sure) was already 20 degrees which is the lowest recommended by retul. I do think though I could probably be at least 1-2cm lower and longer.
My pad Z fit output is 217mm but this is only because this is the widest we tried. I think in ideal scenario I would prefer 1-2cm wider.
All in all, my concern is that the P5D frame is low, so the basebar will be quite low (and narrow), and I will be at a significant riser elevation even in size 58 due to my high pad stack, which may not be ideal for stiffness/handling. So the concern is that after I buy the bike and the EX-10 on top, I may still end up with a somewhat ill-fitting bike.
Sorry for the long winded post. Would appreciate any thoughts from you.
hey Dimm, thanks for reaching out.
I have some thoughts about your fit and fit process, but first let me address your comments from the other post:
Regarding the P5d basebar width and pad width and tilt, I definitely recommend getting the EX10 mono-riser. I know it's an additional administrative and logistical item to solve, but your LBS should be able to sort it out for you. In addition to additional pad width flexibility, the EX10 will give you additional reach flexibility as well as the all-important native tilt function. As for basebar width, you are a triathlete, and should be in the aerobars at all or nearly all times. 38cm is narrow only if you compare to 44cm, but it's quite wide compared to 22mm or 15mm, etc. IOW, it is what it is and in no way will affect comfort or handling. FWIW, I'm 6'2" and on my various bikes have 44cm road bars, 40cm road bars on my aero road bike, and I assume 38cm TT basebar on my P5. I guess what I'm saying is use the right tool for the job. Pack sprint in a road race? 44cm. Time trial or triathlon where you're barely on the hoods? 38cm. As for height, I think that will be fine too, riding the hoods on a P5d would be similar to riding in the drops on your road bike.
Now the fit. I'm immediately drawn to your fitter's use of the word "conservative", which alludes to an opposite or connected word "aggressive" and as you might know neither of those words are in my vocabulary as a fitter and indicate a lack of understanding of a good time trial or triathlon position. There is only "optimal", and everything else is sub-optimal. OTOH, your fitter did say "rotate", which is the correct mental model or framework to understand what's happening when you go from a "slack" position as your fit coordinates indicate to a more orthodox one. Your coordinates of Pad Stack of 690mm and Pad Reach of 451mm are in the upper left quadrant of a size 58cm P5d. This would indicate to me, lacking a picture of your fit of course and assuming that you are the same kind of different as everyone else, that you have some room to grow so to speak with your position, or that your position could evolve to a longer and lower state. Either way, the 58cm P5d will accommodate this, *especially* with the tilt function of the EX10 mono-riser. No matter the riser height, your stiffness and handling will be fine. Stiffness not really an issue, and you're effectively shortening the stem as you come up so handling will be fine too. There's no configuration of the P5d where handling becomes an issue IMO. The stem length is fixed IOW.
Finally, the bike will certainly not be ill-fitting. You're squarely in the range of the 58cm P5d and it would be perfect for you IMO, especially with the tilt function of the EX10 mono-riser.
Make sense? LMK if you have any questions and let's keep the conversation going.
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