21 votes
Accepted

Should saddle height be changed in relation to different crank arm lengths?

Actually, imagine your leg at full extension. With longer cranks, your foot is 5mm further away. To maintain the same leg extension at the bottom of the stroke, you would lower the saddle with longer ...
Weiwen Ng's user avatar
  • 31.4k
17 votes

Why do people seem to choose "aero hoods" over "aero drops"?

Short version: If you raise the bars, now the drops are too high for their best use: steep and technical descents. Longer version: “Aerohoods” are used in flats. You can get the brakes if you need to, ...
Paul H's user avatar
  • 4,102
17 votes
Accepted

Is Lemond's saddle height method outdated?

(The Lemond method is to measure inseam by 0.883 in socked feet and use that to set the distance between the BB center and the top of the saddle). The Lemond method gets into the ballpark of correct ...
Nathan Knutson's user avatar
15 votes

Does it really matter if my stem doesn’t block the hub?

No, it doesn't matter. Riders have different body weight distributions, degrees of upper body strength, body proportions, and sets of priorities for their hunched-over versus upright positioning, even ...
Nathan Knutson's user avatar
14 votes

Is a dropper post a good solution for sharing a bike between two riders?

Using a dropper for this purpose is not a good solution. Droppers do not let you easily choose a set height other than all the way up or down, and most of them don't give you a quick visual way of ...
Nathan Knutson's user avatar
11 votes

I inherited a new bike; when I coast my leg shakes and that thigh burns. What is going on?

I don't see how the slight weight increase should matter. The fact that your extended leg is the one with the issue(I am assuming you get this in both legs depending on what leg is at 6 o clock) ...
WornChain's user avatar
  • 1,263
10 votes

Should saddle height be changed in relation to different crank arm lengths?

In theory, yes. The relevant distance is from the saddle's midpoint to the farthest point of pedal travel (taking into account pedals, cleats and shoes). This is what determines if your leg is ...
calofr's user avatar
  • 1,059
9 votes

Is a dropper post a good solution for sharing a bike between two riders?

To take the opposite argument to the most upvoted answer: using a dropper for that purpose is a good solution. It was in fact the most upvoted answer in this question. But it would not be convenient ...
Rеnаud's user avatar
  • 20.2k
8 votes

Is Lemond's saddle height method outdated?

Consider the formula of 220 - age for maximum heart rate. This formula is typically presented as a formula for your maximum heart rate. It categorically is not. It is an estimate of the average ...
Weiwen Ng's user avatar
  • 31.4k
7 votes

Why do people think the upright position is comfortable?

Old question but came up in my search in 2023, so here's the issue, at least for me...It's not a matter of back upright necessarily, but when you have to lean forward too far, then your spine AND NECK ...
what do I know's user avatar
7 votes

Help me choose a new bicycle size having different geometry

James Thomas, a bike fitter, occasionally collaborates with Francis Cade for YouTube videos. He recently described 9 bikes that he hates as a fitter. The first one was the Specialized Aethos, which he ...
Weiwen Ng's user avatar
  • 31.4k
7 votes

Is a dropper post a good solution for sharing a bike between two riders?

I normally wouldn't make suggestions which go against Nathan's, but here, I do think a dropper is a good and workable idea. Using some of the ideas in this question about marking different saddle ...
MaplePanda's user avatar
  • 15.5k
7 votes
Accepted

Saddle fore-aft compensation in relation to crank length change

There is no rule of thumb for this that I've ever seen. Saddle fore-aft adjustment is used by different types of cyclist in different ways. Performance-oriented cyclists and people that fit bikes for ...
Nathan Knutson's user avatar
7 votes
Accepted

Do increasing flexibility affect bike fit?

It sounds like the flexibility training might be working - for some bits. You're getting lower, which was your goal, so that's good. But if you deliberately ride more upright, is it more comfortable?...
Chris H's user avatar
  • 58.9k
6 votes

Does it really matter if my stem doesn’t block the hub?

The plum line from knee to pedal spindle is bang on. This is a rule of thumb that originated in an era when we were a lot less empirically-minded. The notion that your stem should just block the ...
Weiwen Ng's user avatar
  • 31.4k
6 votes

Can large bike size will be solved by replacing the crank arm with a longer length?

The frame size of the bicycle is designed according to the rider's height and inseam length to ensure a suitable and comfortable pedaling. Swapping the crank arms to shorter or longer ones can adjust ...
Gary's user avatar
  • 121
6 votes

Can a more aggressive geometry/set up be more fatiguing?

Likely the geometry has changed, and your body has yet to adapt to the change. The obvious answer is the new bike is not as efficient as the old bike, but I do not believe this will have as ...
mattnz's user avatar
  • 50.5k
5 votes

Can a more aggressive geometry/set up be more fatiguing?

Are you going faster, but ending up with tired legs? I ask because my old carbon fibre Trek road bike tires my legs (and lungs) more than my touring and mountain bikes. But I go faster while it does ...
Andy Hutcheon's user avatar
5 votes

Can a more aggressive geometry/set up be more fatiguing?

A low and backwards saddle position (as is common with a cruiser) will put more load on your glutes and hamstrings. A higher, more forward position will put more load on your quadriceps (especially ...
Michael's user avatar
  • 27.4k
5 votes

Why do people seem to choose "aero hoods" over "aero drops"?

If you raise the bars, you'll also have a more upright position on the hoods, that is the most used position. If someone is riding dominantly on the hoods, it makes little sense to optimise for a ...
Rеnаud's user avatar
  • 20.2k
5 votes
Accepted

How to decide crank arm length?

Shorter cranks mean a smaller rotation circumference your feet/pedals have to travel to do 1 revolution. That also means your knees and hips move through a smaller angle, your knee won't come up quite ...
Criggie's user avatar
  • 124k
4 votes

Riding out of the saddle and bike size

It's difficult to tell what you're asking about here, and what actually is the problem you're experiencing. But I'm going to go on a limb and say it's definitely not that the bike is too small. You ...
leftaroundabout's user avatar
4 votes

Can large bike size will be solved by replacing the crank arm with a longer length?

Maybe - a longer crank arm lets your foot go lower, permitting the saddle to be a little lower. But it also forces your opposite foot to move higher to complete the circle, and that may not be ...
Criggie's user avatar
  • 124k
4 votes

Is a dropper post a good solution for sharing a bike between two riders?

Given you have a quick release and the same person uses the bike to and from the destination you could do this instead... Have two seats and seat posts with a clamp tightened on the seatpost so that ...
Mauro's user avatar
  • 525
4 votes
Accepted

Struggling to get comfortable on bike

I wrote a guide to adjusting your saddle height and fore-aft position here. It outlines a tests you can use to check for fore-aft position. Basically, if you can ride hands free, just go out on the ...
Weiwen Ng's user avatar
  • 31.4k
4 votes

Saddle fore-aft compensation in relation to crank length change

In theory, trigonometry could help you do this. You can measure the distance from the center of the BB to the top of the saddle, which is the hypotenuse of the triangle. You know the bike's seat tube ...
Weiwen Ng's user avatar
  • 31.4k
4 votes

Advice on Sizing - Vitus

Sizing your bikes small, medium, large, etc, is called nominal sizing. The dictionary definition of nominal that applies here is (of a quantity or dimension, especially of manufactured articles) ...
Weiwen Ng's user avatar
  • 31.4k
3 votes

Struggling to get comfortable on bike

Specific to foot placement: As a starter, the shoe should be "snug" around the foot but not compressing the toes. This is because toes tend to swell, and the instep will compress slightly ...
Criggie's user avatar
  • 124k
3 votes

Is a dropper post a good solution for sharing a bike between two riders?

I'll offer different reasons than Nathan. You are adding a complex mechanical component to the bike. If you get a cheap dropper, it's possible that the post wears out, and that you can't replace or ...
Weiwen Ng's user avatar
  • 31.4k
3 votes

Aftermarket options for adjusting Giant Aero Bars angle

Differently shaped spacers is the likely solution I also came across after a brief Google search. Now, it appears that Aerocoach is not the only purveyor of such spacers. These guys on AliExpress sell ...
Weiwen Ng's user avatar
  • 31.4k

Only top scored, non community-wiki answers of a minimum length are eligible