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Questions tagged [performance]

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6 votes
1 answer
189 views

How does the frame geometry of a cyclocross bike affect its performance in off-road conditions?

The frame geometry of cyclocross bikes aims to offer a responsive and agile feel while providing stability and control over mixed surfaces. It allows riders to handle the demands of cyclocross racing, ...
Arunabh Bhattacharya's user avatar
1 vote
3 answers
100 views

When does power meter accuracy matter?

For a given use case power meter accuracy may or may not matter. Here are two use cases: BikeRumor - Power Meters Explained No matter which power meter you land on, the most important aspect is ...
David D's user avatar
  • 21.5k
4 votes
2 answers
642 views

Can a lightweight cyclist climb better than the heavier one by producing less power?

I guess it's possible because on the climbs you need to beat gravity more than the wind resistance but is there a formula to calculate how much the weight of the rider affect the climbing performance?
Ender's user avatar
  • 2,032
-2 votes
1 answer
134 views

Holding all other things constant, what is the performance difference of adding a pound of weight to each pedal on a bicycle?

I am looking for an answer that may include watts and/or calories per hour only. Please do not discuss wheels, tires, bearings, body weight, frame weight. Just help me understand the physics of adding ...
Ben Marshall Berg's user avatar
0 votes
3 answers
358 views

Best specifications to look for a mixed use bike

I enjoy riding on narrow trails, going on cross country and exploring the woods with my bike. But sadly, I spend most of my time on the bike commuting to my job. My question is what are the best specs ...
Jonathan Pacheco's user avatar
10 votes
3 answers
823 views

What are (a) the source of and (b) the justification (e.g. experimental) for the concept of "normalized power" used in physical endurance training?

In lots of places, I see the concept of "normalized power" recommended for measuring the intensity of a workout and it is claimed in many of these places to be superior to "average ...
Byron Dom's user avatar
  • 151
7 votes
6 answers
3k views

losing weight versus getting lighter bike

Which would boost riding performance more: losing weight, or keeping the weight but a lighter bike? I know that a good bike is not just about weight, so assume that the new bike purely weighs less ...
Lightsout's user avatar
  • 1,737
1 vote
3 answers
39k 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 ...
Caren's user avatar
  • 11
2 votes
4 answers
3k views

Commuter bike for better performance: less weight, or internal gear-hub?

Background I commute daily to work, the ride is about 10 km each way, across the city. The path is mostly streets with intersections, and a few long cycling lanes. Some hills here and there: Strava ...
Mehdi's user avatar
  • 123
0 votes
2 answers
249 views

How do you bicycle the most efficiently on a road bicycle? [closed]

I assume this has been studied to no end for e.g. UCI governed bicycle racing, and probably by others as well. Simply: How do you ride the most efficiently, in the context of putting down power? I'...
AlphaCentauri's user avatar
15 votes
3 answers
9k views

How efficient is string bike? Is this really a revolutionary bike?

Bicycles are getting evolved with good technologies or methodologies as the period changes. Now, this one bike, so called string bike has been introduced, which doesn't have chain, derailleur but ...
HariDev's user avatar
  • 316
2 votes
1 answer
896 views

Curious about foot position on clipless and regular pedals when mountain biking

I normally ride flat pedals and being a mountain biker with a little bit of training behind me, I pedal with the balls of my feet in front of the spindle. I had a pretty good trainer and once I ...
Chris's user avatar
  • 809
4 votes
3 answers
9k views

Disadvantages of using QR->Thru Axle Adapters?

I have a 100x15 front 142x12 rear cyclocross frame. I'm considering getting mid range wheels with quick releases that come with thru axle adapters. The wheels are lighter and better than most options ...
ELion's user avatar
  • 123
9 votes
1 answer
12k views

Effects of jockey wheel sizes & types

I'm wondering about the variations in jockey wheels / derailleur pulleys and what differences they make; There's a lot of conflicting and confusing information out there, so I'm after some general ...
Synchro's user avatar
  • 201
2 votes
2 answers
3k views

Just how much difference does your bike make?

I'm new to cycling and got a cheap (not the very cheapest probably one step up) mountain bike as a way to get around the country lanes in Cornwall, with the odd rough track here and there down to a ...
Mr. Boy's user avatar
  • 305
5 votes
2 answers
328 views

Planning to purchase a road bike

I am 57 years old, 182 cm and weigh 105 kg. I have been cycling for the past 5 years, mostly with a city bike, Trek 7.5 FX. After a trial of a long distance lasting a week with that bike, I realized ...
mazhar celikoyar's user avatar
3 votes
1 answer
140 views

Running tires with significantly different pressures?

I ordered a replacement for one of the old Schwalbe Marathon 700x28C tires on my ancient road bike, and it turns out that "new" Marathons of that size are meant to be inflated to 80-110psi despite ...
errantlinguist's user avatar
2 votes
2 answers
610 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. ...
osm's user avatar
  • 121
4 votes
1 answer
426 views

Does cannabis affect cycling performance?

Some of my friends like to smoke (using both traditional methods and vaporizers that produce no "smoke") or eat edibles before rides, they say it makes it more enjoyable. I always wonder if it ...
ebrohman's user avatar
  • 5,518
4 votes
3 answers
2k views

Is a Roadie with wider tyres still faster then a MTB with slicks?

I need a new bike, but I´m in a dilema on which too choose, because my rides involve 4 kinds of pavement: smooth cycle ways, cobblestone, ok city roads and rough city roads. Was thinking just to keep ...
Sergio Tomasso's user avatar
6 votes
2 answers
363 views

Why does hunger have a much more drastic effect in cycling than in other endurance activities?

When I'm out cycling I know that once I feel hungry, I only have around half an hour to refuel, otherwise I will bonk in a way that all performance is lost and it feels as if the only way to get me ...
Benedikt Bauer's user avatar
10 votes
1 answer
11k views

belt vs chain for what matters performance only

Let's set apart all pros/cons of chains vs belts, like: ease of maintenance, need of a custom frame, cost, spare part availability, all of that: nope. This question is very focusing only on ...
Dakatine's user avatar
  • 443
5 votes
4 answers
5k views

Would Lowering my Handlebars Help my Performance?

I ride now with pretty decent comfort, I have no real back/neck/shoulder pain. As I ride now I feel decent, but I feel as though I might be in too much of an upright position on the bike to get the ...
Weirix's user avatar
  • 525
4 votes
3 answers
3k views

Would Putting BMX Bike Brakes on my Road Bike be Ok?

I am a bit of a bigger guy (260lbs) and I'm not too confident with riding my bike at higher speeds just yet. Mainly because I feel as though my brakes, (Stock V brakes that came with my Specialized ...
Weirix's user avatar
  • 525
3 votes
3 answers
11k views

Is a 29.5 km/h average speed decent for a 90 km ride (on road) with an elevation of 1200 m?

I have been riding about 150 km a week commuting and on the weekend. I frequently do rides over 80 km. I'm riding a carbon cyclocross (Ridkey x-fire) with slicks. My latest ride was on the ...
Robaggs's user avatar
  • 327
0 votes
4 answers
293 views

Air Pressure on wheels [closed]

Does the perfect air pressure is related to the performance of bikes? If yes, what is the exact amount of pressure required on MTB, Hybrid, City Bikes and BMX?
HariDev's user avatar
  • 316
2 votes
2 answers
290 views

Optimal beginner training

I have been road biking for about 6 months now (before that mostly running and gym.) I signed up for a 300km race (mostly flat), and my goal is to pass it in 9h. My current level of biking is 90km in ...
Johan's user avatar
  • 363
1 vote
2 answers
214 views

Should one pedal over a mild slope? [duplicate]

I do a bit of cycling these days, as in nearly 50 km a day. I do a ring-route. And, there is a mild slope, safe enough to sprint on, and roughly 2 km long with at a worst-case 400 m line of sight ...
WedaPashi's user avatar
  • 203
2 votes
1 answer
2k views

Why is it important to keep bearing sets when greasing a campagnolo hub?

In almost all cases where hubs are regularly serviced, bearings don't need to be replaced. The general consensus though is to replace bearings after so many thousands of kms. Many posts on the web say ...
r3mnant's user avatar
  • 155
1 vote
3 answers
9k views

Giant Revolt 2 vs Giant Anyroad 2 drag/roll resistance

I own two bikes: Giant Revolt 2: http://www.giant-bicycles.com/uk-ua/bikes/model/revolt.2/17270/72372/#specifications Giant Anyroad 2: http://www.giant-bicycles.com/uk-ua/bikes/model/anyroad.2/17256/...
Max Ch's user avatar
  • 13
1 vote
2 answers
7k views

Pedal weight and performance

What's the performance difference between getting speedplay zero stainless and titanium, 206g vs 164g. Only focus on weight and not quality of bearings etc. I suspect the difference won't be ...
Karsten's user avatar
  • 352
1 vote
1 answer
1k views

Wheel performance in cross wind

I'm looking to buy a pair of Mavic Cosmic Carbone SLE or Mavic Ksyrium SLR. The Cosmic's are 50mm height, Ksyrium 25mm. I'll only be using the wheel for racing. How do they perform in cross wind. I'...
Karsten's user avatar
  • 352
5 votes
5 answers
435 views

What subtle factors affect performance in unsubtle ways?

As a non-professional biker who commutes on a bike daily I've been noticing that some factors that I didn't think would make much difference in how fast I go or how quickly I get tired have a much ...
mkoryak's user avatar
  • 1,291
49 votes
10 answers
62k views

Are there any scientific studies proving the benefits of clipless pedal systems?

Have there been done any scientific studies that proves that clipless pedals actually improve pedaling efficiency etc. over flat pedals? Clipless pedal enthusiasts are quick to say that you must use ...
user1049697's user avatar
  • 4,302
7 votes
3 answers
1k views

DIY computational fluid dynamics for aerodynamics?

Has anyone experimented with using consumer 3D software to do CFD-like aerodynamics simulations? Specifically, I was thinking: Setup the bike on a trainer (with rider) Take a series photos, and plug ...
dbr's user avatar
  • 2,539
12 votes
4 answers
10k views

Extra power needed uphill for weight increase

How much does weight mean when going uphill? Let's say I'm going up a mountain with 1000 m of elevation and it's quite steep: 10%. Let's also say I can maintain 250 watts. If I add 1 kg of weight to ...
Karsten's user avatar
  • 352
19 votes
1 answer
2k views

Relative efficiency of different commute bike setups

My interest is in long distance commuting (e.g. more than 50 km a day) and the relative efficiencies of different commute bike setups (e.g. drop bars vs flat bars, fenders vs no fenders, panniers vs ...
Rider_X's user avatar
  • 30.7k
5 votes
1 answer
453 views

How much does nipple choice affect wheel weight/stiffness?

Would I be a fool to replace the nipples on a Dura Ace 7900 C24 wheelset with a set of DT Swiss anodised alloy nipples, in the interest of aesthetics? I want the bike to look nice, but don't want to ...
Will Vousden's user avatar
  • 3,981
-1 votes
1 answer
397 views

Lighter bike for climbing [duplicate]

Possible Duplicate: What is the effect of adding weight to a wheel vs adding it to the frame? Do lighter wheels make a significant difference when climbing or would a lighter frame do the same? ...
danny's user avatar
  • 469
4 votes
4 answers
3k views

How does stiffness affect experience and performance?

I see many mountain bike reviews and articles discuss the stiffness of frames, forks, wheels and other components. Here are some questions which cross my mind: What is the definition of stiffness? ...
zr.'s user avatar
  • 517
11 votes
6 answers
6k views

Will changing from a touring bike to a racing bike improve my energy level?

I'm 50 and have been cycling for years, but only 25 mile rides and indoor training. I've been training for 8 weeks, adding 5 miles a week to my big ride, but at 60 miles it is taking me 4:20 and I can'...
Steve ford's user avatar
5 votes
1 answer
462 views

Maintaining an old bike properly

I have a 6 years old bike, I got it when I was 9. It's a great bike, however I've always had the problem of maintaining it properly. I have a few questions which I hope to get answered here. Before ...
Bugster's user avatar
  • 153
20 votes
11 answers
24k views

How does a bike's weight affect the overall experience of owning it?

Naturally, carrying a light bike up the stairs is much more enjoyable compared to a heavier bike. Are there any other aspects of a bike which are affected by its weight? For example, would the weight ...
Mike Mazur's user avatar
8 votes
2 answers
4k views

How do half link chains perform for long term use?

I was wondering if there is anyone with a Rohloff hub riding using a half link chain for its longevity. OK, the hub isn't essential it's just a single speed chain, so experience from anyone who rides ...
Hecke's user avatar
  • 81
9 votes
2 answers
23k views

How to significantly lower HR[avg] while improving performance output

On my Saturday's ascent race I was riding 181bpm HRAVG and saved some power for the last km where my HR peaked at 190 (which is my highest ever recorded HR at my 37 years or age). I felt rather normal ...
Robert Koritnik's user avatar
2 votes
3 answers
246 views

warm up without bike

Next weekend I'll participate in a relay triathlon (1100 mts. swim, 7 kms. run and 13 kms. MTB). I'll be doing the bike section, which is the last. Bike needs to be at the boxes area an hour before ...
Narcís Calvet's user avatar
1 vote
5 answers
13k views

Choosing a foldable 20" bike: Schwinn S2280 vs. Citizen Bike Miami [closed]

At the moment, I'm in the market for a foldable 20" bike, for commuting purposes. I've done my research, and have found two appealing models: Schwinn S2280 Citizen Bike MIAMI Which of them would you ...
Maxim Zaslavsky's user avatar
6 votes
7 answers
1k views

Age-specific information for cyclists

I was reading a discussion (Cycling: mashing versus spinning) in which someone commented ... In the big picture, winning against other age-groupers is pretty unremarkable. ... which implies ...
ChrisW's user avatar
  • 12.1k
7 votes
4 answers
3k views

How to warm up / stretch and cool down?

I'm starting to ride again after a couple of years of not doing any sports at all. I dimly remember some stretching exercises back from school, but I don't know if I'm doing it right at all. Instead ...
Dave Vogt's user avatar
  • 171
14 votes
3 answers
6k views

Should I eat breakfast before or after morning ride?

I am planning to do some (1-2 hours) base training rides in the morning before work. Should I eat something before the ride? From my knowledge, there should be enough glycogen in muscles to power me. ...
Papuass's user avatar
  • 3,279