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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13
votes
4answers
3k views

Is it possible to accurately measure airspeed on a bike, and is it useful?

So riding into a 15mph headwind at 15mph, your airspeed would presumably show as 30mph. In no wind, airspeed of 15mph. What would the airspeed be if cycling at 15mph with a 15mph crosswind? And ...
0
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2answers
46 views

8 speed shimano claris cassette on Campagnolo Calima C17

I'm looking to replace my two wheels and I've been recommended this Campagnolo Calima C17 Clincher Road Wheelset. I currently have a Shimano Claris 8 speed cassette. The wheels are described as 10/...
4
votes
4answers
239 views

How do sidewinds affect forward speed?

If I'm riding at 20mph on the flat with no wind, and then a 10mph wind kicks up, if I'm heading directly into it I'll slow down by X mph, and if I'm heading directly with it (i.e. pure tailwind) I'll ...
21
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12answers
15k views

Why is a road bike faster than a city bike with the same effort? How much faster it can be?

Why is a road bike faster than a city bike with the same effort? And how much faster it is? (if someone have measured it) Motive of the question: My current bike is a city bike with front fork shock ...
3
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5answers
2k views

Relationship between speed and cadence?

I am having a disagreement with a friend. It stems around the scenario of 2 identical bikes on the same gear ratio side by side. If the rate of pedaling is same for both do both bikes travel at the ...
2
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2answers
132 views

E-bike speed limit in Ontario, Canada

In Ontario, Canada, may I pedal my e-bike up to the road's posted speed limit without motor assistance? Like if my bike does 31 mph but the speed limit is higher, can I travel to that speed without ...
0
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3answers
1k views

Why is my new front wheel not spinning?

Today my front wheel got flat. I took it for repair and when I went back home cycling it was very hard. It felt so heavy and that was not normal for speed 4, when I changed down to speed 3, 2, 1 it ...
1
vote
2answers
123 views

How much can I expect to improve in 1 year?

I am 51 yo, started cycling 2 months ago. I do about 80 km per week (in weekends). Currently my average speed over large distances (max distance I've done so far is 90 km) is around 22 km/h. On flat ...
7
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1answer
971 views

Is it worth upgrading to 28mm tyres from 25 for a 250 mile ride?

Next month I'm embarking on a 250 mile ride over one day - I've done plenty of training and I'm ready. Currently my bike has 25mm tyres and some of the 100 - 175mile training rides I've done have ...
3
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4answers
521 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 ...
1
vote
2answers
125 views

Understanding science of speed difference between two bikes

I have two MTBs and one is slower than the other. Bike1 has Deore derailleurs and a double chainring with 10 sprockets and Shimano hubs. Which has a great speed irrespective of the gear combination. ...
1
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3answers
240 views

How durable are road or hybrid tyre tubes compared to mountain bike tyre tubes?

The context here is that I'm using a mountain bike to commute and I'm considering buying a hybrid bicycle or road bicycle. I'm experiencing various issues that require repairs and maintenance. ...
4
votes
1answer
213 views

Expected time in cycling race

I am about to participate in my first cycling race. The organizers ask me about my expected average speed, presumably for creating suitable groups of comparable speed. I just started cycling on a ...
0
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3answers
206 views

What are all of the speed numbers for a bike?

If you are buying a bike, there are a lot of different speeds. Is there a complete list of speeds? I'm trying to create an array... var allSpeeds = ["single-speed","3-speed","12-speed"];
0
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2answers
557 views

Rim brake on front and disk brake on rear

Good day guys. I would like to know... I've purchased a old fixed gear bike, and i converted it to a freewheel. I've managed to install a rim brake on front. I was going to install ine on the back ...
0
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1answer
43 views

Difference between drivetrains

I have a 3x10 speed MTB. Will it be a upgrade or a downgrade to move towards a 1x10 and will I be able to easily ride above 60km per hour as I can with the 3rd gear in front?
4
votes
5answers
9k views

Is 25 km/h average speed good? What speed should I aim for?

So, I recently got into road cycling and have been riding for a few weeks. My average speed for most of my rides is around 25 km/h for the first 40 km and drops to 15 or 20 km/h for the next 20 or 30 ...
1
vote
4answers
377 views

Faster with lower center of gravity?

If I bend my torso toward the top bar, lowering my center of gravity, will that alone help my bike go faster?
1
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2answers
247 views

Chainring sizes for 11 speed cassette

I have an 11 speed cassette 11-32 teeth. I am running a 52 teeth chainring on the front. What would be a good recommended smaller chainring for the front? It needs to be big enough to take up the ...
2
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2answers
253 views

Laws against electric assist bicycle with energy recovery? [closed]

Is an electric bike like this required any special license. The power applied comes from the collected kinetic inertia from going down hill or stored from the rider then the stored power can then be ...
11
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4answers
11k views

Can you ride a bicycle at 90 km/h on a flat road?

This video was featured in a leading news website in my country. It's a cyclist riding on a highway with very high velocity - said to be 90 km/h - close behind a truck. The road is flat, so it keeps ...
15
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4answers
5k views

For fitness's sake, is it better to ride with low cadence in high gear or higher cadence in medium gear?

I've started riding to get fit and lose weight. As part of that, I set little challenges for myself, eg: "I'm going to ride these next two blocks as quickly as possible in the highest gear". I'd be ...
4
votes
3answers
506 views

Fastest way to get faster up hill

There's a 2.4km, fairly gentle hill near me which I want to get quite a bit faster on. The traditional answer to my question is likely to be 'Go up the hill more often', but I also have a turbo ...
1
vote
1answer
323 views

I generally commute along four-lane 30 mph [50 km/h] main streets. Is this wise?

crasic's view Elsewhere, crasic writes: The Most Direct Route is Not Always the Best ... Your driving commute route is usually a horrible bicycling commute route. I purposefully avoid big ...
0
votes
1answer
234 views

Faster Wheels & Tyres for my Cyclocross bike

I ride a cyclocross bike for commuting but want it to go faster! Instead of buying a new road bike, I'm thinking about new wheels & tyres. My journey is pretty flat at the moment. The currents ...
1
vote
2answers
786 views

Top speed for Cannondale Bad Boy

I have a 2015 Cannondale Bad Boy 3. I'm planning on making a trip tomorrow that goes across a very long, fairly steep road (It's almost completely straight). I've had the bike for about six months, ...
1
vote
4answers
1k views

Does changing gear relation produce different speed at same applied power?

When you are starting the ride, I potentially believe ("know?") that with a smaller plate(cog with fewer teeth in the rear cassette), you obtain more velocity than with a bigger plate(cog with more ...
1
vote
2answers
2k views

Replacing thick tire with thin tire

I ride a Hero Sprint, with tire size 26 inch. The wheels are thick and become slow, given my cycle's weight. Is it possible for me to switch to thinner tires? If yes, what are the plus and minus ...
4
votes
4answers
486 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 ...
6
votes
2answers
921 views

How much does wind affect the speed of a professional cycling peloton?

It's a well known fact that due to air resistance increase of speed on a bike takes non linear increase of power, so the huge marginal increase of power needed to go faster while riding at around 40-...
2
votes
1answer
764 views

How much better are aerodynamics between a vintage road bike and a top of the line aerobike?

(Just up front: (1) All comparisons made keeping all other factors equal! (2) I know this is a really hard comparison, but there seems to be virtually nothing canonical on here or the rest of google, ...
5
votes
3answers
4k views

Do I need a Road Bike to go fast?

Do I need a road bike to go fast, my average mph is normally around 11 - 12mph according to strava & fitbit The thing is I normally overtake most people, and some cars when I'm going downhill, ...
0
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2answers
301 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/...
3
votes
4answers
222 views

Rear view ears at speed

How can you hear cars approaching over wind noise? As I transition from a Sunday rider to a commuter I've gotten a good deal faster. This increases the wind noise in my ears, and it's gotten to the ...
2
votes
1answer
197 views

Cassette compatability regarding Shimano 9 speed

I have a Ultegra CS6700 9 speed rear deraileur that came on my bike. Originally the gearing was 12-25, which I changed to 12-27. I was wanting to know of that deraileur would work without a problem ...
2
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2answers
17k views

105 Shimano 10 speed shifters - compatibility with 11 speed rear derailleur

I am building a bike and I am using 10 speed Shimano 105 shifters. On the back I am using a 11 speed 105 rear derailluer (because is the only one I have at the moment). The cassette I am using is a ...
8
votes
4answers
2k views

Is there a limit to safe downhill speed on a bike

I have a very steep hill on my route which levels out after about 2 km. The first quarter is extremely steep and shortly after I enter it the bike skips around a little bit and by the time I'm at the ...
5
votes
1answer
906 views

Newbie Question: What do speeds mean on chains?

I'm shopping for a new chain, and I noticed some inconsistencies when discussing speeds. Specifically, speeds applied to the cassette refer to how many layer of gears it has (I presume). Speeds, when ...
4
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3answers
2k views

How much slower are big tires?

I've now got a bike with 2.35" (or 60mm) Schwalbe Big Apple and feel a bit slow. There's no testing to prove this claim, but riding my fixie (25mm) the last couple of years just felt quicker/easier. ...
10
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5answers
3k views

How does weight influence your speed when descending?

I have recently bought a road bike and went on a little trip with a friend who is also a novice. We have approximately the same height but he weighs a lot more (I weigh 67-68kg for 1m81 and he weighs ...
17
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10answers
30k views

How do I make a mountain bike go faster (commuting)

I just began biking around 4 months ago, and due to lack of experience I bought a Diadora Orbita Mountain Bike. I've staring commuting to work recently (about 14 km daily) but I'm not exactly happy ...
2
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2answers
282 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 ...
4
votes
3answers
1k views

Maxing out on gears [duplicate]

I have an older specialized bike from 2001 that I ride and race on with a gearing of Shimano 53/39 and 9-speed cassette 12/26. On my regular weekly rides I end up maxing out on my gears and can't get ...
7
votes
3answers
6k 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 ...
2
votes
2answers
633 views

Foot shifting while pedalling

I have been contemplating clipless pedals as the next logical step. So after a bit of research and reading this question and it's answers I find myself a bit unconvinced mainly because nothing covers ...
6
votes
3answers
649 views

Which components affects downhill speed? [closed]

So my riding buddy can never keep up with me downhill. I'm slightly heavier than him (5-10lbs). I have an older non aero bike. He has a newer aero bike. His is probably a few lbs lighter than mine. ...
6
votes
1answer
174 views

Flat land speed development

I guess I'll start off by saying that I am not a necessarily experienced rider. After years of doing ultra-marathon running I decided to move to triathlon to cross train. I signed up for a 70.3 a few ...
2
votes
2answers
429 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. ...
3
votes
2answers
5k views

Spinning bike speed vs outdoor ride speed

I have been riding indoor on spin bike and I average 40 km/h, would someone help me translate these speed to outdoor cycling?
15
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9answers
17k views

Fixie vs Road Bike - the right fixie bike for bunch rides

At our local bunch rides, we're seeing more and more guys out on fixies and they are going at a phenomenal pace. We have a local segment called the "Chicken Run" (and it's flat) and this one guy in an ...