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18
votes
5answers
2k views

Does drafting cause resistance to the lead rider?

I know that when riding close to another cyclist, I expend less energy to go the same speed. But does the Conservation of Energy "law" mean that the lead cyclist is going to expend more energy to ...
17
votes
3answers
2k 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 ...
9
votes
4answers
841 views

What would cause variable air resistance on a day with no wind?

I commute to work regularly. I find that on some days when there's no perceivable wind, I feel like there's almost no air resistance at all and it's so easy to ride at speed. It's also relatively ...
7
votes
4answers
3k 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 ...
7
votes
2answers
528 views

What are the disadvantages of wearing an aero helmet?

During the Olympic Final of the Men's Keirin one competitor (Chris Hoy) was wearing an aero helmet (red helmet in the picture below), the other competitors wore normal helmets: The advantages of ...
7
votes
2answers
1k 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 ...
5
votes
2answers
203 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 ...
5
votes
1answer
165 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 ...
4
votes
2answers
816 views

how come some cyclists look like they are making a 45 - 60 degree angle with their bodies and I don't?

I just wanted to ask how come some cyclists when they ride they lean in, while their arms straight, and some resemble a 45 to 60 degree angle (which looks cool by the way). I have a hybrid bike and I ...
4
votes
1answer
365 views

DIY computational fluid dynamics for aerodynamics?

Has anyone experimented with using consumer 3D software to do CFD-like aerodynamics simulations? Specifically, I was thinking: Setup the bike on a trainer (with rider) Take a series photos, and ...
1
vote
1answer
652 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 ...
1
vote
1answer
106 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
vote
1answer
248 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. ...
1
vote
1answer
201 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 ...
0
votes
2answers
1k 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 ...