Playing with golden cheetah is on my to do list! I did once try and code up my own virtual elevation testing that worked quite well but it was a bit too much like work!!!
For what it’s worth, I came out of the wind tunnel in 2021 with cda more like .22!!! Mywindsock is good for relative numbers though.
Edit to add: at 188 cm and 85 kg I think .22 is good enough :-).
Interesting way to save 3% of drag: Fast or Fiction: Does a bottle down the front of your kit make you more aero? - YouTube 
Seemed about a 10w saving for me. #beerbellyforthewin
If you want DM me and i will reply with my email and then you can send me the “.fit” file and i will have a go in golden cheetah and see what i get.
I waved at you today like I knew you, then remembered i only know you from the TR forum 
Went rather well, although I seem to have given loads of time up at the technical start/finish bits again 
I lost tons on the technical stuff too and spent too long riding upright (probably 90-95% of the time tbh I hate side winds!) and ended up 1sec slower than last year. I did get a 5mins season power pb (towards the finish) but that probably due to my position.
Hi Ben - first up, well done on the win - great performance!
So, using this data in Golden Cheetah - I’ve just tried my own fit file, and the data is awful. Possibly the reason is that temps changed so much during the race, and the wind conditions also changed (according to how I felt, anyway). It started at about 8 degrees and finished at about 18. This changes air density from about 1.27 to 1.23; this is a really big shift. What I’m finding is that I would have to analyse each lap separately, with a different value for air density.
The best fit I can get with my own data shows CDA varying between 0.19 and 0.21, which is far too much to be useful. And it doesn’t fit well with better data that I have. Sorry I can’t be more optimistic/more help!
I was third in my age group. Strangely the 35-39 group is less competitive than the 40s groups - I’d have qualified from each but would have been a way off the podium.
At least a minute back from 1st and 2nd, so not catastrophic but I went too easy out of the showground (again!) and messed up the last roundabout and final turn. In hindsight I think you can take that turn at full pelt, and i coasted round in both directions!
I’m also noticeably bigger than most riders on the podiums, I’m afraid not much I can do about my bones 
Nice one 
I went too easy on the way out too but my too easy is 26.5mph you were probably around 30mph or more 
I just had a look at my 1/4s it sums up my typical cautious badly paced effort with a wind: 224w, 222w, 227w and 265w
I think a lack of planning on my part, I had a plan for the “outside” parts if the course, that I stuck to pretty well, I even watched the descent on YouTube to know how hard to ride the corners, but I hadn’t thought through the show ground part!
Good work on getting it done. You would think with us both riding on the edge of the fens so much we’d get used to the wind!
Looks like you had a .186 ride today. Maybe it’s the bottles. Mywindsock has been pretty consistent for me over the years. I generally bottom out at similar numbers.
Interesting to see the „bottle down the skinsuit“ being discussed.
I have a 52k TT coming up, which might be pretty hot. If so, I’d definitely need to drink. I am not confined by UCI or anything, so I was looking at the bladder down the suit option.
Is there a good solution for that? I will not need a lot of water, but being able to drink 500ml would be a boon.
What have people used for that and does it have significant downsides (like chafing, slipping down into you know where… or so)?
For longer TT bike rides, I exclusively use a 2liter bladder. It’s the type that folds over and has a slip seal. I previously used a camelback option although I found the round screw top to be intrusive under the jersey/suit.
I use something similar (or I did ). On my 50 miler the other week I bit of the bite valve at circa 28 miles. I’ll probably get similar again. Although whilst I’ve always wrapped the hose so the valve comes out of my skinsuit’s neck, I may try routing it down the arm 
You could also opt for bottles behind the saddle, altho drinking from those seems rather bothersome… but according to talks from Dan Bigham after that Ironman Sub6 record bottles behind the saddle are quite aero.
i’ve found that having the bladder down my skinsuit really makes me feel like i need to pee which is distracting when racing so i would trial this before.
a 2L bladder with only 500ml in shouldn’t feel too heavy or uncofortable though i wouldn’t think.
52km depending on how hot, expected time and the terrrain, i would probably be going without a drink.
Probably me over thinking things again. Just two years ago however I was much more confident with my deep section but now with the same wheel less so and sit up too often. The difference as far as I see it (at the moment 
). I used to have a butyl tube and used the deep wheel for training often. I subsequently put in a Latex wheel so I now swap for my shallow section rim for outdoors training. Maybe I should get a new tubeless deep section, however what hold’s me back is my current deep section has an alloy rim and I quite like that in the wet (which it often is in the UK). Before the disc brake evolution did carbon rims progress to a stage where this wouldn’t be a problem? Or maybe I should put a Butyl tube back in and stick with my alloy brake track?
As someone who once was an absolute aero snob and Time Trial enthusiast, I figured I would chime in this thread and drop these new shoes that were developed/released.
I have been following this company since the original theory was formulated and they are now completed and getting some mainstream attention.
Are the claims true? I have no idea, but I find the shoes to be very interesting personally and if I was still in a competitive state of cycling would probably try them.
Maybe somewhere in this forum Vettas have been discussed but I didnt see it or maybe some other theory is present. Anyways, I have no affiliation with the company just love progress!
I noticed those claims. IMO, I wouldn’t put much weight into it unless a completely independent test is performed.
No disagreement here!
Just figured id let ya aero nuts know (if you hadn’t already!)
