I’ve done this local TT 3 times now, 10 mile out and back , dead flat and a few turns.
Trial 1, 289 Watt Avg, 25.4 mph avg
Trial 2, 279 Watt Avg, 25.2 mph avg
Trial 3, (Today), No Power or HR, 25.5 mph avg
Do these numbers look okay or is it possible that I am leaving a lot of time on the table for my weight/power ratio due to position or something else?
Working on a position pic…
You should be able to be faster with thos stats. Its difficult to say. We dont know wind or road surface, etc. Honestly except for equip critique for very marginal gains, we have to see your position and the more accurate you can be with video angle side and front would be most helpful in anyones advice
It’s awfully hard to compare different people on different courses. When I’m in shape (which ain’t this year), on a course twice a 20.9 mile course with a 261 ft of elevation gain, on 281w, I average just under 25.5. I’m a little over an inch taller, but I outweigh you by 25lbs - again, when I’m in shape. I’m 61. I don’t know how good/bad my position is.
Bike:
Shiv Tri, Reynolds RZR92s with carbon cover, Vittoria EVO CX tubulars, TriRig base bar and brakes. Spec TT2 helmet (which seems faster on me than my old LG Rocket)
I think you have some work to do. Latex tubes? Your extensions look tall and long to me. But that’s a wild assed guess. Did you ditch the behind the seat bottles and cage to the short TT? But all of this seems fairly minimal - maybe 10-20 seconds.
Using the old “a pound costs 4s in a flat 40k at a 1hr pace” rule, you should be 40s faster on our weight difference alone.
I did a time trial this past weekend of roughly the same distance. The slowtwitcher known as blue stack did it as well he is roughly the same size and weight as you averaged around the same watts and did roughly the same speed give or take. So it sounds in line to me but maybe he will chime in
I would look at the “post your times from your last race” thread and look through people who have posted TT efforts. That will give you an idea of what other people can post time wise for X number of watts.
The absolute best bet would be for you to look up the “platypus” thread and learn how to analyze your data yourself. and then you can start working to improve it. This means during your TT’s you’d need to collect some more information.
Short of the two suggestions above, then post a picture of you on your bike and ST will take a guess and tell you your seat is too high.
I am your same height and weight. My Olympic race this last weekend was AP206@24mph. I don’t have any 10 mile TT to compare but maybe you have an Olympic distance bike around 206 watts to compare to me? I had 10 traffic circles to go through so that probably sounds like your ride with turns.
if your ftp is 29x, you should be able to produce more power for a sub 25min TT. generally in 10mi TTs i have done (no turns, flat) i have been able to produce anywhere from 300-320ish for the 20min effort (FTP of ~300ish) depending on level of fatigue. generally that has resulted in ~28-29mph. your course isn’t as fast, but it definitely sounds like you’re leaving some mph on the table. i am the same height and weight.
You’ll lose some time on the turns and the turnaround. What does your speed profile look like through those areas? For the longer straights, what’s your power and speed? How was the wind that day? Temperature, humidity, and barometric pressure? But 25.5 at that power does kind of suck. Knitted out I’m doing around that speed on 30-40 watts less, and I’m an inch shorter and a few pounds heavier.
The good news is you have the potential for lots of improvement. I weight at least 10 lbs more and put out about 10 watts less, but i am generally in the 29-30 mph range. The only major difference is that I live at 5000 ft, so air density is lower.
if those are jet + rim wheels, that is waaaaaaayyyyyyyy too much pressure, even for previous generation at your weight and road types you list it is too much
you can(or rather I can ) lose 1mph easily on chip seal with pressure that is too high, not to mention I lose power as well from the vibrations
.
