Interesting perspectives, thanks all.
Im at the end of a Base/Build/Speciality plan (Sweet Spot Med 1/SweetSpot High 1/General Build/Rolling Road Race) and I was focused on doing that consistently for the best conditioning possible. I find now that I haven’t actually hit any higher power numbers than last year over 8 - 13 minutes, apart from lots of 5 minute records due to the Ramp test. This is mostly due to not TT’ing specifically I guess.
My FTP is 290 as of a trainer road ramp test about 8 weeks ago. It feels fairly accurate, but could I do 290 for 1 hour? Unsure. My very recent best 1 hour power would be about 270 in a race situation.
Can I ride threshold (290) for 11 minutes. Yes absolutely.
320? Probably but horrific pain is coming.
330? Maybe. Again in suffer city
350? Probably not.
Ideally I would have tried this effort out on the trainer. My recent power curve over this timeframe is slightly under what I think I am capable of currently which is why im wondering how far to push it. Last August I managed 330 watts over 10 minutes in a race, but that’s a long time ago. On the other hand, my threshold is higher since then.
The TT is this weekend so its too late to try things out. Im a tiny bit less prepared than what id like to be. Life has been busy the past few months with a newborn and work and so on.
EDIT: Also maybe im better off just riding on RPE for something this short. I rode by power target last year in my best TT performance ever. But last year was different as I had a better handle on my limits. This year I feel less confident in thinking I can hold X% power for 11 minutes.