I measured my frontal area with bike to be about 0.435 m^2. Using a Cd of 0.7. That corresponds to a CdA of 0.305.
Any constructive tips to getting more aero.
Here are some pictures. Thanks
white background? No messy rooms or garages?
get s-bend bars instead of cervelo standard aerobar
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Shave your legs
Lose the saddle hydration
go lower
aero helmet
race wheels
shoe covers
why did you photo shop the picture, ashamed of where you live?
BTW: All my spacers are out and my 10 degree stem is already flipped down
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they make 17 degree stems.
if there are spacers under your elbow rests you could remove those.
How long did it take you to “white-out” everything??? lost hours of training…
I needed to white everything out to calculate my frontal area, and wanted to create an image mask so that I can more easily compare position changes on the side and frontal views.
Remember that if you calculate your cda to use the position you will use in riding on the road and at the load you will use tt’ing. You can get a pretty narrow profile if you are spinning easy and looking at the floor. it’s not all about aero. Comfort/power/aero trade off means there is a wide fluctuation with the fastest being the best mix of all components.
Andrew
You look good. I’ll see you in Kona.
s-bends are only good for slam position
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Thanks. I averaged the calculated frontal area from 5 frontal photos riding at power. I just posted these as an example. If you look carefully, the black and white one is not the same silhouette as the color one.
Just looking to see how I can get more aero. It seems that it would be “easier” to gain speed by becoming more aero as opposed to increasing power which takes more time. Obviously, I’d like to do both.
Of course, there is a tradeoff in aeroness and comfort and power generation. I am comfortable now, but maybe could push it by going slightly lower.
Don’t listen to these “low hawks.” You are PLENTY low. If you were to relax your shoulder blades, you’d have a damn flat back!
Could try moving the elbow pads in.
Wear sunglasses.
Call Gary T up and get a spot in the fall wind tunnel session in SD. All the eyeball comments from the gallery are worth about what you paid for them. Look at Lance, Floyd, and Tyler. Three of the top TT riders in the world. They all look different and they all could be ripped apart by the folks on this board, yet from what I have read they are all pretty slick in the tunnel and maximise their Watts for the position they ride in.
I don’t think a cookie cutter approach like low and narow or try to look like Basso is the end all for positioning. In my opinion Basso is one of the best looking riders in the bunch. I don’t think you can possibly figure out your fastest position without some flow studies.
Post this on biketechreview.com.
You won’t get any sense from the fools over here.
AndyG wrote: Post this on biketechreview.com.
You won’t get any sense from the fools over here.
This comment gets the second “AMEN” from me today.
First off- it looks like you have a great position. My guess is you’re on the larger side to still have an approximate CdA of 0.3.
You could try raising your forearms until the tops are about parallel to the ground. This should result in a slight decrease to your frontal area, and is what John Cobb used to stress at the best arm angle.
I’m not sure going lower will help. That hunch in your back will likely stay in the same place and not result in less frontal area. You can even produce more frontal area with a lower position when your elbows and upper arms begin to get wider than your knees. Of course you could get lower and pull the elbows in, but then you’re opening up a few more variables with possible reduced power, comfort, etc.
Thanks for the tips. I guess I’ll post to biketechreview.