53 votes

What is best for your brakes when stopping at the bottom of the hill?

In terms of wearing out the brakes, they will wear less when you brake at the bottom. When you descend a hill you have a fixed amount of energy to lose, and when you descend at a higher speed, a ...
Andy P's user avatar
  • 18.3k
43 votes
Accepted

What is best for your brakes when stopping at the bottom of the hill?

One should not trade their safety for prolonging brake pads life. Thus gaining the speed and hoping to lose it at the very end of the ride is not the wisest thing to do. Having said that the question ...
Mike's user avatar
  • 4,341
38 votes
Accepted

How bad is switching derailleur gears under load?

The answer heavily depends on the groupset construction/generation and personal perception of what is "bad", among other factors. Below are a few aspects that I am aware of. Switching gears ...
Grigory Rechistov's user avatar
23 votes
Accepted

What are the disadvantages of having an old, worn cogset?

As a chain wears out, the distance between links gets bigger (this is what chain wear tools measure). As this is happening, the chain will grind the cogs to match the worn chain (distance between ...
Carbon side up's user avatar
20 votes

ParkTool CC-2 chain checker incorrect readings

Your high CC-2 reading likely relates to how much pressure are applying. The CC-2 device is not particularly solid and its readings are sensitive to how much pressure you apply to the pivoting gauge. ...
Rider_X's user avatar
  • 30.6k
17 votes

What is best for your brakes when stopping at the bottom of the hill?

There are really two optimal solutions: Go as fast as you dare, perhaps slightly braking, maximize your frontal area (thereby maximizing air resistance) then brake at the end quickly. The idea here ...
juhist's user avatar
  • 18.7k
15 votes
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Should the chain diverge that much?

Yes that's completely normal. You have one chainring and it has a fixed position. You have 11 gears on the rear, and only one of those could have "perfect chainline" All the rest are ...
Criggie's user avatar
  • 124k
13 votes
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I failed to replace my chain at the proper interval. Will I have to replace my whole drivetrain?

Yes - after that mileage you will need both a new chain and new cassette. A new chain on the old cassette will not mesh right, and accelerate wear on the new chain. Depending how much chain elongation ...
Criggie's user avatar
  • 124k
10 votes
Accepted

ParkTool CC-2 chain checker incorrect readings

A lot of chain checkers read the chain being worn to x% even on a new chain (esp. on higher speed chains). The variation in new chains and reading inaccuracies can make tools essentially useless. ...
Batman's user avatar
  • 46.2k
10 votes

How bad is switching derailleur gears under load?

You can quite easily get your chain dropped. If you were standing and pushing hard in a climb you could even fall. If the chain drops to a bad place, it can damage your frame near your bottom bracket ...
Vladimir F Героям слава's user avatar
9 votes
Accepted

How thin/worn out can you allow road bike rims to get?

0.8mm is very thin and dangerous. The mechanic is right to tell you to replace the rim! Keep it only if you want to play with your life because it may fail in a catastrophic manner! More dangerous ...
Carel's user avatar
  • 8,289
9 votes
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Cost of lending out a child's bike?

The marginal cost of cycling is extremely low (i.e. the cost for an extra bit of use), especially as kids' lessons are going to be light use (I doubt they're hurtling off kerbs, for example). Kids' ...
Chris H's user avatar
  • 58.9k
9 votes
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Is buying a used bike bad if you are not expert?

I don’t think it’s a bad idea, but be prepared to repair stuff. Things even a novice should be able to check: Frame and fork without damage (i.e. no cracks or dents, nothing bent). Small paint chips ...
Michael's user avatar
  • 27.4k
9 votes

How fast do carbon and aluminium rim brake tracks wear?

The materials you quote are quite different. Even between different types of aluminium rim, wear rates can be significantly different. A set of wheels I built with high end aluminium rims were ridden ...
Noise's user avatar
  • 13.9k
8 votes
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Uneven Chain Ring Wear, or Manufactured This Way?

More or less all contemporary multi-speed chainrings are like that. The idea is the different profiled teeth correspond to different areas of the ramps and/or pins to create specific assisted areas ...
Nathan Knutson's user avatar
8 votes

Lost teeth on second ring?

This is a common misconception. The shorter teeth are not chipped or broken off. Modern chainrings and cassette sprockets have features to assist the derailleur with moving the chain. The shorter ...
Argenti Apparatus's user avatar
8 votes

What are the disadvantages of having an old, worn cogset?

I've done the opposite to a lot of riders - I had a chainset of unknown mileage and rather than guess, I simply rode the whole thing into the ground. Shifting got progressively worse over time, but ...
Criggie's user avatar
  • 124k
8 votes

I failed to replace my chain at the proper interval. Will I have to replace my whole drivetrain?

The other posters are probably right. But, if you haven't money to burn, I would replace the chain first and see how it goes. You say you keep it clean and well lubed so damage to the front chainrings ...
Kev Peard's user avatar
  • 151
7 votes

How thin/worn out can you allow road bike rims to get?

I don't know exact numbers, but you will know when you need to replace your wheel when the rim starts to have a concave feel to it when you run your fingers over it (I'm talking about aluminum rims ...
lulubelle's user avatar
  • 704
7 votes
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Average lifetime for 26inch spokes

From the info you've given it's hard to tell how old your bike/the spokes are. If the spoke tension is too low/if there is too big a difference in the tension of the spokes in the wheel this can ...
Maarten -Monica for president's user avatar
7 votes

How do I adjust V-brakes as the pads wear?

The rim brakes on my last bike had a barrel adjuster that did what you ask. My new bike has disk brakes and they self-adjust. The barrel adjuster here is the black cylinder on the right-side. The ...
Ross Millikan's user avatar
7 votes

How bad is switching derailleur gears under load?

Expanding on a comment I made on Gregory's answer: I agree fully that it's better not to shift under load. However, modern drivetrains are much less sensitive to shifts under load than older ones. You ...
Weiwen Ng's user avatar
  • 31.4k
7 votes

Do you automatically have to replace your chainrings once your chain reaches 1 % chain wear?

I think that one rule of thumb I saw asserted that if you replaced promptly, you could get 2-3 cassettes per chain, and 2-3 sets of chainrings per cassette. I'm not able to provide a concrete source ...
Weiwen Ng's user avatar
  • 31.4k
7 votes

Crankset for 2006 Raleigh MTB

The SunRace crankset is cheap. They are still available and probably have an identical specification. The cheapest types have non removable chainrings. The steel used to make them is not particularly ...
Noise's user avatar
  • 13.9k
7 votes

How fast do carbon and aluminium rim brake tracks wear?

Wheel rims live a very long time, but are still consumables when used with rim brakes. If they're not damaged, braking will wear out a rim in 20,000km ~ 100,000km in my estimates. The back wheel wear ...
Criggie's user avatar
  • 124k
7 votes
Accepted

Recommended wall thickness on rims with caliper brakes

Many wheels have wear indicators From documentation resources of Shimano's R5000 wheels: https://si.shimano.com/en/pdfs/si/4BG0B/SI-4BG0B-001-ENG.PDF The hollow on the opposite side to the valve ...
DoNuT's user avatar
  • 4,431
6 votes
Accepted

When should a disc brake be replaced?

There is no way you can accurately assign a distance to disk brake replacement. Someone commuting in a stop and go method in a wet climate like the pacific northwest will get much less life out of ...
Deleted User's user avatar
  • 9,978
6 votes
Accepted

If chain/ BB/ casette are dead can chainrings and derailleurs still be OK?

The load is spread across more teeth on the chainrings than on the cassette, so they tend to last quite a bit longer. If they said your chainrings are fine, then they are probably no problem. ...
Kibbee's user avatar
  • 21.7k
6 votes
Accepted

How exactly does cross-chaining accelerate wear?

When the chain is bent sideways, the load at links is concentrated on one end of the pin and single side plate while the link is turned. This is supposed to wear that side of the link faster. Once the ...
ojs's user avatar
  • 22k
6 votes

What is best for your brakes when stopping at the bottom of the hill?

This question is about whether you should execute the bicycle equivalent of a suicide burn. It is faster and more energy-efficient to brake as hard as you can as late as possible than to control your ...
Kafein's user avatar
  • 161

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