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1
vote
4answers
841 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 ...
6
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 ...
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?
1
vote
2answers
537 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 ...
3
votes
3answers
936 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
523 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 ...
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
539 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
8k 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 ...
3
votes
4answers
335 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 ...