44 votes

What happened to riding with no hands?

Nothing happened or changed. It's just your observational bias coupled with different demographics preferring different bike capabilities. Many children's bikes have relatively relaxed geometry, ...
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  • 11.8k
17 votes
Accepted

How does fork offset affect bike handling?

Offset primarily affects your mechanical trail - that is, the distance between the imaginary straight line going through your head tube down to the ground, and your tire’s contact patch. Normally, the ...
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  • 11.3k
15 votes

What is the difference between a horizontal top tube and a sloped one?

The trend towards compact frames goes back to the early 90s and an Englishmen named Mike Burrows. Burrows helped design several time trial frames which featured a radically lowered (but not sloping) ...
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  • 1,594
15 votes

What happened to riding with no hands?

I think there's a large element of selection bias, combined with changes to roads and traffic rather than bikes. When you were a kid you used to ride with kids who rode a lot, probably on fairly ...
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  • 47.2k
14 votes

Apparent pedal force improvement from swept back handlebars; why not use them?

For one thing, the aerodynamics are terrible. For another, most cycling is not dependent on peak power, but on sustainable power, for which leg strength (or body strength) isn’t as important as ...
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  • 24.5k
14 votes
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What makes a bike good or bad for climbing?

This is not an especially aero bike, although it does have some aero-looking feature (which does not mean it was in fact aerodynamically optimized). There's also nothing about it that makes it ...
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  • 24.5k
13 votes

Why are endurance bikes so bulky or wide nowadays?

Second moment of area increases with distance to the power of 4. This means a tube with a wide diameter and thin walls is much stronger against bending or torsion than a narrow tube with thick walls ...
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  • 20.4k
11 votes

Where should pedals be located?

Where should pedals be located (relative to the rider)? Wherever its most comfortable for you. It's a matter of personal preference (*). What works for person A won't necessarily work for person B, ...
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  • 45.6k
11 votes

Why are endurance bikes so bulky or wide nowadays?

I disagree that Endurance bikes look "huge". Taking your example of Canyon, the current model of the endurance has very slender tubes by modern standards. However there are a number of ...
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  • 16.3k
9 votes

Are bikes with aggressive positions required to achieve high fitness levels when training on a bike?

TL;DNR - The bike you will ride most often is the bike that will get you fittest. Fitness and power transfer are unrelated. Your bike fitter is presuming you want to make the most of the power you ...
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  • 41k
8 votes

Install suspension forks on non-suspension bike

You might be able to fit a suspension fork on your bike, depending on frame geometry, but I think it’s likely you will not be able to. Frames designed for suspension forks locate the head tube ...
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8 votes
Accepted

Are Adjustable Stems With Reasonable Merit?

Whether they work: Short answer yes, they do not have major widespread problems. Most problems that do occur are related to undertightening the bolts on them to start with, or adjusting them without ...
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7 votes
Accepted

What effect does seat tube angle have?

As for sheer maneuverability, seat tube angle may in some (rather extreme) cases affect wheelbase, which affects stability at variety of speeds. Also seat tube angle will have some minor effect on the ...
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  • 1,344
7 votes

What happened to riding with no hands?

The biggest influence on how a bike steers is 'trail'. Trail is the distance that the contact area of the front tyre on the ground trails behind a line drawn through the steering axis to the ground. (...
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  • 179
7 votes

Evaluating hybrid bike geometries

TLDR; Essentially the same answer as Argenti Apparatus, but with more background explanations. Which among the two is a more performance oriented geometry and which one is more comfortable? It ...
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  • 29.9k
6 votes

What is the difference between a horizontal top tube and a sloped one?

Its all about inventory and stock levels. Historically frames came in increments of 2 or 3 cm. So one model might be stocked in 48/51/54/57/60 cm or 48/50/52/53/56/58/60 By having more adjust in ...
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  • 101k
6 votes

I sit real far back on my saddle

As others have said, just because the bike shop says it's a good fit, doesn't make it so. Their incentive is to sell a bike off the floor so they'll find the one that fits best and sell it to you. I ...
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  • 8,926
6 votes

Bottom Bracket Height

No, it is not. Different bikes in the same class (mountain, cross, road, etc.) may even have different bottom bracket heights even among comparably sized bikes. It is a per manufacturer design ...
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  • 45.6k
6 votes

Evaluating hybrid bike geometries

I think you are totally over-thinking the geometry. Don't look at the numbers, go test ride the bikes. First make sure you are looking at the correct size in each model for you. If you don't have ...
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6 votes

Why do current mountain bikes have such steep top tube? Comparing my Kona Blast 2001 vs 2019

Circa 2000 a Blast had 80mm travel and 26" wheels on 1.90" tires, compared to a modern Blast -27.5" wheels, 100mm travel, on 2.25" tires. The crown height on the modern Blast is significantly higher ...
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  • 41k
6 votes
Accepted

In bike geometry, what is 'RC Length'?

Rear Center Length It’s the distance from the rear hub to the bottom bracket. More or less the chainstay length. Unfortunately Reid Cycles doesn’t have a diagram of what and where exactly they are ...
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  • 20.4k
6 votes

Apparent pedal force improvement from swept back handlebars; why not use them?

Many cruisers have swept-back bars, as do some bikes designed for more athletic riding (notably Jones Bikes). I have two bikes set up with Jones bars (one an aggressive hardtail mountain bike, and one ...
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  • 1,365
6 votes
Accepted

Striking pedals on a full suspension bike

Yes, while it is a common enough problem for people moving from hardtail to softtail, it can also happen when people change bikes of the same type but different geometries. The lowering of the BB when ...
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  • 41k
5 votes
Accepted

Understanding the bike geometry through riding

What would be some good examples of test cases to assess the impact of these parameters? Build a testbed bike that has adjustable parts covering the different parameters you care about. Instrument ...
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  • 23k
5 votes

What is the difference between a horizontal top tube and a sloped one?

Physics answer here. I'm going to use the term "low clamp bike/design" for the form with the slanted top tube, as well as "high clamp bike/design" for the form with the horizontal tube. Advantages of ...
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5 votes

What benefits does a tapered head tube afford?

Regarding MTB: The taper allows for a bigger lower bearing while keeping the upper bearing smaller. The lower bearing receives a greater part of the load as most of the time it carries all the weight ...
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  • 10.8k
5 votes

Should I prioritise reach over stack (in choosing a new bike)?

Endurance geo tends to be shorter reach with a higher stack, but variation on the recipe between brands. Cyclocross bikes are race bikes (although years back they were often marketed as do all bikes, ...
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  • 29.9k
5 votes
Accepted

Upgrading a dual sport bike - a geometry question

That bike is what it is, a great urban and light trail machine built to a price point. You got what you paid for. Get out and braap. Most worthy upgrades like wheels, drive train, brakes and ...
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5 votes

Geometry question: shorter stack with same reach?

Don't just look at the stack and BB drop, consider the steering geometry as a whole (chainstay length, BB drop, head angle, front-center [BB axis to front wheel axis]) which will affect how the bike ...
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5 votes

Apparent pedal force improvement from swept back handlebars; why not use them?

In addition to aerodynamics, there are two more things: It is more efficient use of your muscles to pedal faster in lower gear, except maybe for very short bursts Clipless pedals or toe clips and ...
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  • 19.6k

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