The speed tag has no wiki summary.
25
votes
19answers
11k 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
213 views
What is the braking (stopping) distance for bicycles?
A vehicle driver must keep enough braking distance (aka stopping distance) between him/her and a vehicle in front in order to avoid collision. It depends on the driving speed.
What is the braking ...
2
votes
3answers
334 views
Why is cycling on a road so much faster than cycling on a cycle path?
I normally cycle on a cycle path and I struggle to go over 10Mph on my bike for any distance. My Daily commute took me 58 to 42 minutes depending on how much I push myself.
This morning and yesterday ...
-4
votes
1answer
78 views
Speed On a Road Bike [closed]
My old (But freakin' awesome) french road bike goes fast, considering that the only times im racing is pretty much against my friends who all have mountain bikes. Needless to say I always win. But I ...
13
votes
3answers
1k 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 ...
4
votes
6answers
460 views
How do I estimate how long it will take me to ride my commute?
How can a cyclist, new to commuting by bike and not all that experienced in riding, estimate how long a commute will take?
I have been riding for 4 days to and from work. 156km over over 4 days. I'd ...
5
votes
4answers
596 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, ...
2
votes
1answer
73 views
How can one estimate the length of a commute? [duplicate]
How can a cyclist, new to commuting by bike and not all that experienced in riding, estimate how long a commute will take?
Answers will of course vary, and actually riding the commute will tell the ...
13
votes
4answers
1k 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 ...
2
votes
2answers
245 views
Are flat handlebars stable at high speed?
I live in a mountainous area, and so there are lots of opportunities for descending at high speed. I currently have a bike with drop bars, and when in the drops, I feel very stable doing this.
I am ...
6
votes
6answers
371 views
What is the most efficient way to ride up or down hills, and into or away from wind?
I'm trying to work out how hard I should push myself when riding up or down a hill. Similarly, how hard should I push myself when riding into, or away from, or perpendicular to wind?
My aim is to ...
0
votes
2answers
263 views
Is there any bicycle that can fly? [closed]
In E.T. the bicycles fly. In old films we see some inventors try to construct a bicycle which flies, with wings similar to a bird's.
Yogi bear has a flying ship.
See the picture above the site. The ...
14
votes
9answers
10k 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 ...
5
votes
5answers
619 views
How do you shift your weight when leaning on a turn?
When I turn I usually shift my weight on the same side I'm turning to. To ease the discussion let's assume we are turning left, on a paved road (no mud/gravel/potholes/grease/oil/ice/door traps).
I ...
10
votes
7answers
1k 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 ...
2
votes
4answers
402 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 ...
3
votes
2answers
640 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 ...
7
votes
4answers
2k 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 ...
9
votes
3answers
835 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
300 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 ...
2
votes
5answers
634 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 ...
3
votes
3answers
524 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 ...
0
votes
2answers
309 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
3k 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 ...
1
vote
2answers
214 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 ...
12
votes
4answers
2k 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 ...
2
votes
4answers
251 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 ...
