Questions tagged [speed]

how to go faster or how to go faster safely. For questions about gears or derailleurs, use 'gears'

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14 votes
7 answers
6k 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 ...
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58 votes
11 answers
399k 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 ...
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3 votes
1 answer
171 views

How to estimate the speed of cyclist with given parameters

How is the speed of the cyclist determined? If I know the effort of pedaling in watts, the air drag area in meters squared, the rolling resistance details of the tires, and the mass of the cyclist and ...
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8 votes
13 answers
3k views

Why aren't average speeds computed over distance? [closed]

Average speed is computed so that average speed = total distance / total time. This means that if you go up a hill, which takes a long time, your average speed drops. This isn't regained on the ...
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  • 199
10 votes
5 answers
15k views

Why does reducing bike weight have such an impact on speeds?

I am trying to understand the physics of bike weight. I have just made a switch from an 11Kg road bike to an 8Kg one (obviously there are many more factors and differences between the 2 bikes other ...
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  • 221
11 votes
7 answers
2k 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 ...
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  • 310
9 votes
9 answers
85k 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 ...
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7 votes
2 answers
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 ...
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  • 231
0 votes
2 answers
1k views

What to upgrade to achieve a higher top speed?

I enjoy going fast and my current bicycle tops too early, what kind of upgrades would I need to make to achieve a taller final gear?
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  • 65
19 votes
3 answers
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 ...
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  • 8,856
72 votes
27 answers
60k 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 chart ...
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  • 1,094
25 votes
13 answers
28k 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 ...
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  • 443
4 votes
4 answers
642 views

Maximum Descending Speed

This is a hypothetical question but I'm curious. Assuming an endless, freshly paved road with no turns, what would be my maximum speed? EDIT My question is too general so to help I'm adding some ...
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12 votes
5 answers
6k views

Legs are very weak

So, I've been riding at different levels of difficulty for years now, from a 33lb, one gear bmx to a 21 speed, 44lb mountain bike, and now to a 22lb, 21 speed road bike. Each bike had its own ...
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9 votes
6 answers
6k 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 ...
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  • 496
7 votes
3 answers
7k views

At what speed does Aerodynamics of a bike come into play?

Is a more aero bike more efficient than less aero bike at 10mph? At what speed does Aerodynamics affect your speed significantly. update: "The question is dealing with the minimum speed that a ...
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  • 1,260
11 votes
8 answers
28k views

Will increased weight make me go downhill faster?

I have had this question for a while. I want to know how I can get down a hill as fast as I can. So, I was wondering if increasing the weight of a bike increases the speed on downhill stretches, or ...
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  • 554
10 votes
4 answers
2k views

Does rocking the bike side to side when e.g. sprinting or climbing help?

Or would more power go through the pedals if the rider held the frame still/upright? Or is there little difference? How would it be measured and what are the forces acting on the bike when rocking ...
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  • 1,240
9 votes
2 answers
19k views

How much faster will I be if I lose 10kg (from 100kg, all else equal)

All else being equal (power output, weather, wind resistance, etc.), how much faster will I be if I lose 10kg (going from 100kg to 90kg) while riding? Acceleration and climbing might be much ...
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  • 901
5 votes
6 answers
2k views

I want an old road bike to fix up that goes fast. Where do I start?

I would like to get into road biking with some co-workers who have fancy new road bikes. However, I prefer to buy an older bike from the 70s, 80s, or 90s because I like fixing up older stuff and I'm ...
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  • 51
5 votes
2 answers
659 views

At what slope will the best bikes keep a constant speed?

At what slope will the best bikers (in terms of aerodynamics) on the best bikes roll at a constant speed at 80 km/h on an asphalt surface on a dry day? The reason for this question is because it gives ...
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  • 175
3 votes
2 answers
907 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 ...
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  • 1,451
2 votes
2 answers
582 views

Switching to touring bicycle: Performance considerations

I'm using a road bike more than 2 years for holiday tours and commuting. Merida Scultura 903 Shimano Tiagra groupset (50-34, 12-28) 8-9 kg 700x23 tyres Now i have plans to switch to touring bike. ...
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  • 121
2 votes
2 answers
348 views

Riding fast on an MTB

I have been cycling for quite some time now (an MTB - hardtail) and I intend to go for higher speeds above 45kmph (on road). I typically cruise around 38kmph (on road). I can endure my cruise speed ...
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1 vote
3 answers
612 views

How much faster when using drops

How much faster would a person on a road bike go when using drop handlebars in drop position vs. using flat handlebars? Assume that the power output is the same in either case and that one is going on ...
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  • 179
0 votes
2 answers
748 views

Increasing speed and reducing effort on steel MTB on the road [duplicate]

I have a low end steel MTB, which is heavy by itself, and I also a heavy man weighting in at 100kg, and on my MTB I have knobby dirt tires. As you can imagine, riding on the road any faster than 20km/...
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  • 111