No, not at all…i’m 5’9’ / 175cm and ~150 lbs / 68kg. My buddies hate riding behind me because I am low and narrow. Not much to draft off! 
That may be why I appear wider shouldered than I really am…I don’t “shrug” in a traditional sense. I have found that I can get in a lower and more sustainable position by collapsing my shoulder blades together…this lowers my shoulder and head to be more in line with the rest of my body. For me, it is a more relaxed option vs. shrugging (and more aero).
Ah that makes sense!
I am also 5’9" (922.5mm pedal to saddled height, 750mm bb to saddle) but in that picture 175lbs, shows what two similar height people can have different results.
Derailed the thread a little but I find our banter/talks should be useful to someone new looking at dialing in their fit 
100%…real world examples always help!!
Don’t spend too much effort on this, just relax the calf and everything below the knee. Let them do what they want to do 
It makes a HUGE difference.
When I don’t rotate my hips I feel 15kgs heavier on the saddle, whereas if I rotate and straighten the back, I feel like a feather in the saddle.
(Feather being relative 
Still gotta haul around this greek ass)
So is it helpful to say instead of aiming to sit on sit bones(like you would a chair) it’s more like sit on the front of your sit bones. The problem I had and probably many others is how many ways you can sit on your sit bones lol. But if aim to sit on the “front” of them it makes it vague
I can’t find a great pic to illustrate my point, but it boils down to a bit of “terms vs reality” situation.
We say “sit bones” for an easy expression that relates to the Ischial Tuberosities (IT). We do want this basic skeletal structure to bear most of the load vs soft tissue in the middle.
But the actual shape from that IT is more of a ‘V’ that comes to form the Pubic Rami (PR). In reality, we still load the IT but also have contact with PR depending on the final pelvic tilt employed. This changes a bit with something more like a very low and forward fit like a TT or Tri bike that pretty much leaves the IT and is mostly PR support.
Most road bike fits and such like them are a combo of the IT & PR vs what we might quickly summarize as the “sit bones”.
With the 120 stem on I can level the saddle more from being more nose up. I never had a saddle that wasn’t nose up so this is great and may have contributed to
My si issues. Time will tell. I did raise it up a bit so ai may lower the stem because I’m thinking now the drop wasn’t quite the issue. I think my hips are in Better rotation now( at least I think)
Looking MUCH better……I’d still like to see you roll your hips a little more forward, but that can be hard to do on a trainer. I think it helps to have the increased wind resistance help get you in a more aero position. But having a level saddle will also help the doubly in rotating your hips.
My guess is that as you get used to this position, you may even be able to flip that stem around to the neutral position vs. upright.
Big improvements,nice work!
Totally agee. Some really positive changes.
A quick thing to try before flipping the stem is to just place it lower on the steerer with less spacers under it. Nice and easy way to see if more drop is beneficial.
You sit on your Rami and need a proper fitting saddle so that your sit bones are “touching” but not bearing “all” weight when riding low/aero and rotating your hips.
The link I posted on my post number 1628 (Link here) is a great introduction read .
Quick link to the post mentioned just above:
Thanks for the graphic. That is what I was describing in my related post above:
This was/is extremely helpful. Currently with my reach extended I started doing this almost naturally. I noticed my back is completely relaxed now and I kind of “lay” my pelvis on the saddle as opposed to before I was more digging my sit bones in. This illustration is exactly how I would describe the feeling. It had to “click” though. Sounds silly. I think the fit advice I got on here may have solved a 2 year long chase of aches and pains. Time will tell!
Agonized over what to do about this, I really like the bike, but I agree, it’s too small. Found this locally in an XL and pulled the trigger, the wallet hurts, but after one ride, it’s wildly apparent that the P3X is too small. The SC is just way more stable(I’d guess from a proper weight distribution) Now to get the fit dialed in. Waiting for some wedges to angle the extensions more(currently at 7*, will for sure want to go to 14*, will try 21*.
I mean, the bike is cool and all, but I came here for the Odyssey 
That is a nice looking bike! Congratulations, I think you will be very happy with it!
How does one go about using a road bike fit to correctly size a TT frame? There’s a frame on eBay I’m eyeing…
You really don’t. The two fits are nothing alike unless you have successfully run clip-ons in a position close to what you want on the TT bike.
