Same response, it's not terrible, but probably could be better. Have you run the power file through Aerolab in Golden Cheetah? Related question, what tires, tubes and pressure?

With fast wheels and tires, in the aero bars on a full tri rig with a decent aero helmet I'd expect a 138 pound rider to be rolling around 24 mph or more on 210 watts just a quick swag suggests that at sea level with reasonable but not super fast tires and tubes your rider has a CdA of around .26 or higher which is a bit below average especially for an athlete at that weight.

-Dave

Depends on how tall you are.

I'm slightly heaver and would do 24-25 on 210 watts

Depends on how tall you are.

I'm slightly heaver and would do 24-25 on 210 watts

This is the data
138 pounds
210 watts
22.8 mph
aero helmet, zipp 404, trisuit, little wind and relatively flat rolling circular course.
And no this isn't me....I weighed more than this 40 years ago..

I looked at the data from the thread of latest race reports with watts etc. but there didn't seem to be much data for watts and speeds in this range.
What are the opinions on how aero are non aero the rider position is based on this data?

Elevation?
Watts at the crank or hub?
What's the bike? Aerobars?

This is the data
138 pounds
210 watts
22.8 mph
aero helmet, zipp 404, trisuit, little wind and relatively flat rolling circular course.
And no this isn't me....I weighed more than this 40 years ago..

I looked at the data from the thread of latest race reports with watts etc. but there didn't seem to be much data for watts and speeds in this range.
What are the opinions on how aero are non aero the rider position is based on this data?

Where the hell is Jack Mott when we need him?

If my pea-brain is working (and it probable isn't), I think Jack finally broke an hour for 40k on 225-230 watts. 6'3" and 160ish. I'm assuming you're talking about an hour effort. So, if a pound is worth 4 seconds for a flat 40k, your example should be 88 seconds faster, but with some loss for the lower wattage.

So, my "guess" (and that's all it is) is, on a flat, low wind course, is a tad over 25mph, with good tires, wheels (disc on back) aero helmet, no gloves, shoe covers, etc.

This is a tall female about 5-10 to 5-11. I have not seen her fit but will be checking it next week

You're checking her fit for what?

?

I do know she recently got this as her first tri bike and maybe her fitter knowing this did not but her in a very aggressive position..... I do know after being on ST for a few months that I will probably find that her seat is too high :) ... I'm not a bike fitter so all I can do is recommend another visit to the fitter if I think her position looks like she should be delivering newspapers. Any recommendations based on the info?

I did 24.45mph on 207W at my last flat triathlon. I am 5'4.5" and 123lbs though.