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2
votes
6answers
1k views

Do higher speed crashes result in less serious injuries.

I have heard that the severity of injuries tend to decrease while riding a road bike at high speed. An instance of high speed would be like those in the Tour de France. The reasoning behind this idea ...
7
votes
2answers
2k views

How do I descend faster on the straightaway?

I've heard a lot of advice about descending mountain roads involving cornering and braking. I want to know how to go faster when descending on the long straightaway. Is it worth pedaling at speeds ...
17
votes
3answers
4k 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 ...
2
votes
2answers
554 views

How do you estimate the speed of Tour de France riders on tv?

I was watching Tour de France with my father (who is a cat 3 racer), and he claimed to be able to estimate how fast the riders were going by observing the cyclist on the screen. I didn't believe him ...
9
votes
6answers
10k views

Does a 700c wheel help you go faster?

Someone suggested going with a 700c wheel to go faster, and after thinking about it I am wondering if a larger wheel actually does go faster. I understand that your gears will cause a wheel to rotate ...
13
votes
7answers
4k views

What skills/drills should I learn to descend faster and more confidently? (for mountain biking)

I've ridden road and mountain bikes for years, and this is my first year riding as a part of a team (and actually doing races). I've been stuck at nearly the same level of skill when descending and ...
5
votes
4answers
5k views

Sources of vibration at high speed in and around rear wheel

I’m experiencing vibration somewhere in the rear half of the bicycle when descending at high speed (say more than 30 mph), and I haven’t been able to pinpoint the cause. Everything looks fine, ...
3
votes
3answers
963 views

Speed and Cadence Bike Sensor Opinions

I'm looking to start tracking my speed and cadence for my iOS app, Cycle Meter. The app works great for distance, time, but is not accurate at all for measuring my speed. So I'm thinking of buying ...
1
vote
2answers
531 views

If not Kona Asphalt Commuter then what?

Recetly I spotted Kona Asphalt Commuter, one of this series here: http://www.konaworld.com/asphalt_commuter.cfm?content=dew_plus Why such bike is so special for me -- because right from the shop I ...
55
votes
25answers
46k views

Why aren't Tour de France riders going any faster?

I was having a look at the average speeds of the winner of the Tour de France over the years on this page. To help things along I put the data into LibreOffice and produced a plot: I put on the ...
3
votes
2answers
7k views

Options for replacing a 7 speed Shimano cassette / chain

I would like to replace my 7 speed HG70 cassette and chain. My problem is that it is increasingly difficult to find quality parts for 7 speed system. My bike is a Trek 970 from 1993, originally with ...
3
votes
2answers
578 views

Speed and the sizes of tires/gears

Does the speed of a normal mountain bike vary according to the diameter of the wheels? If it does, will a larger diameter increase the speed or decrease it? Similarly, if the speed varies according ...
15
votes
4answers
10k views

Why am I slow on flat surfaces?

I've been riding about 300 miles a week for the last 2 years. I'm not riding in races, just riding with friends. I always ride 60+ miles (95+ km), and I'm in excellent shape. I have a low end road ...
15
votes
4answers
4k views

Can I ride faster with a bike jersey?

I normally wear a cotton t-shirt when I ride. If I get a bike jersey, how much difference will the reduced air resistance make at, for example, 20 mph? I realize it's not possible to be precise, but I ...
4
votes
4answers
350 views

Effects of design on speed?

I'd like to understand more about how the design of a bike affects its speed (assume a normal, two-wheeled bike with gears). Can I assume that weight has little effect, on level ground, except when ...
10
votes
3answers
2k views

How fast do you need to be going to get an effective slipstream on a bike?

How fast do you need to be going to get an effective slipstream on a bike?
25
votes
9answers
69k views

What is a reasonable speed for long distances on a bike?

I am curious what a reasonable speed to travel on a bike is. Speed will obviously vary based on the conditions in which you are riding. I am planning on taking the GPS out with me this weekend to ...
20
votes
13answers
24k views

How can you speed a road-bike up?

So, I have an 80's raleigh bike, reassembled from spare parts. I'm wondering what the best way to get more speed out of the bike is. Wheels? Gears? Lighter gear? Different pedals? I'm rather fond ...