Questions tagged [aerodynamics]

Questions relating to a bicycle's ability to efficient move through the air.

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1answer
478 views

Where does aero wheels noise come from?

One time I hear someone said, with satisfaction, that his aero wheels sound awesome. I wonder where does the noise come from, is it because you ride so fast the pushed air makes the noise or is it ...
13
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5answers
8k views

Are aerodynamic rims worth additional weight?

I was under the impression that reducing the weight of your wheels is important. However, I'm noticing that many of the extremely high-end aerodynamic rims are actually heavier than cheaper rims by ...
1
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1answer
405 views

Why am I not seeing improvement in my bike split time?

My training went up significantly between half-iron events. There was improvement in the swim and run. But no improvement in the bike... In fact I could say I did worse because there was little ...
2
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1answer
192 views

Does hub diameter or hub size have a notice able effect on the aerodynamic performance of a wheel set?

If you were to change the rear hub on your hypothetical or real zipp 808 wheel set to a large diameter internal gear hub like a shimano alfine or a rohlhoff hub would there be a measure able aero ...
3
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3answers
1k views

What sort of bicycle helmet gives me better speed?

I am working to improve my segment times on Strava riding 10km to/from work. My average speed is 32 kmph, and over short segments (1km) I can set avg speed 44 kmph / max 49. Over the last year I ...
1
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2answers
626 views

Cube Agree GTC - Tri-Bars

I have a Cube Agree GTC (2012), and I would like to buy some tri-bars for it. I've read that this model ( Although, on second thoughts, maybe this is a newer model...) has compatibility issues with ...
5
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2answers
2k views

Does group riding negate the aero benefit of deep rim wheels?

I've been weighing up some options over wheels and in doing my research I've noticed that rim depth may be a bigger factor than I had previously considered. On the one hand, shallow rims are typically ...
1
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1answer
205 views

Aerodynamic effect of drafter to the draftee [duplicate]

I thought I read somewhere something like having someone drafting behind also has effect to the rider in front. I wonder if it's true and would like to understand how does it work because it's quite ...
1
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1answer
1k views

Wheel performance in cross wind

I'm looking to buy a pair of Mavic Cosmic Carbone SLE or Mavic Ksyrium SLR. The Cosmic's are 50mm height, Ksyrium 25mm. I'll only be using the wheel for racing. How do they perform in cross wind. I'...
1
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1answer
1k views

Advice on aero wheels

I have decided to buy new wheels for this season. I'm currently riding the Bontrager Race Lite wheels that came with my bike, and now it's time to move to aero wheels to keep up. I'll do about 1300 km ...
19
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3answers
6k views

What are the most significant factors affecting downhill cruising speed?

When I'm riding with my friend, I notice that he rolls down hills significantly faster than me. We can be riding next to each other, both in a similar aerodynamic position, but if we both coast he ...
6
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1answer
1k views

quads feel over used while in an aero position

I typically ride on the hoods, but I've been working lately on a more aero position. When in the drops or using clip-on aero bars I find that my quads get fatigued much more than when I'm in a normal ...
7
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2answers
3k views

Why choose a traditional frame over an aerodynamically streamlined frame?

I'm not talking specifically about triathlon frames, just frames which have aerodynamically shaped tubes. As I understand it, both types of frame are legal for road-racing under UCI rules. So, why ...
1
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2answers
3k views

Crosswind effect on an aerodynamic front wheel vs a rear wheel

I am looking to purchase a new wheelset in the not too distant future and am debating between wheels that are 58mm and 85mm deep. Or, and this is the part I'm curious about, a hybrid of the two. (58 ...

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