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Gears in the drivetrain of a bike.

3 votes

Gear shifts and drive speed on bikes

A simple way is to count wheel revolutions directly, this is how most cycle computers work, as you can ignore the gear you are in. If you don't have a cycle computer, paint a white mark on the front t …
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4 votes

Difference between a 7 speed chain and a 10 speed chain

Yes, while the internal width is the same, the external width of 10 speed chains is narrower. Refer https://www.parktool.com/blog/repair-help/chain-compatibility
mattnz's user avatar
  • 53.1k
4 votes

How do I tune slipping gears?

Another possibility is the derailleur is flogged out, although in my experience kids don't change gears enough for this to happen …
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12 votes

Help choosing right chainset / crankset - commuter looking for a faster top speed

meaning "1 times" rear cogs vs 2x or 3x) has been around for a long time in the MTB world and taken over, but the user benefits are largely limited to novices and riders who struggle with front and rear gears … Another thing to consider is we get a lot of questions on this site asking how to get taller gears so the person can go faster. …
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9 votes

How can I lower the gear ratio on my son's bike?

While not suggesting its the best option, another option from a new cassette is a 30 tooth chainring. which will give close to same ratios as a 14-34 cassette. Square taper cranks can often be picked …
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4 votes
Accepted

What is a better gearing combination for downhill?

I ride a hard tail over all sorts of terrain. Generally I ride on the middle chain ring in these situations. Its less to do with the mechanics, and more to do with whats possibly coming up, and fast + …
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4 votes
Accepted

What is the advantage of a "compact crankset" vs changing a chainring?

Getting though all the hype and testosterone - Compact cranks allow a smaller small chain ring as they have a smaller BCD. Modern tech means you can have a wider gap between chain rings, giving larger …
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7 votes

What cadence saves power when climbing?

Every rider has a different optimal cadence. You need to find yours. This will depend to some extent how you are feeling on the day ('Ohh that hurts' vs 'pain, what pain'). Most novice riders pedal …
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0 votes
Accepted

Can I use a Shimano XT 11-gear derailleur with a 10 ring cassette on a mountainbike?

10 and 11 speed systems are not compatible. The pull ratio of the shifters is different, as is the cog spacing of the clusters. You may get away with some combinations of frankien-mixandmatch, but as …
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4 votes

Can I 'upgrade' a 9 speed Tiagra RD to Sora to lower my gears?

If she does not need the higher gears then there are ways to bodge a cassette of say 14-34 that would close the gap (at the risk ramps would not line up making shifting less smooth) Decreasing the chain … A hybrid solution of a smaller chainring and larger, but not as large as 34 cassette, adds the cost of a chain ring but reduces the jump between gears, but allows you to tert some things before spending …
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2 votes

front gear shifter cable sleeve, shifter to frame needs replacing, the old wire rusted inside

By sleeve I presume you are meaning the Shifter cable outer. If this is the case, yes, any shifter cable will do. Easiest way to to get a 'kit' that comprises of shifter inner and outer and endcaps. …
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3 votes

Why does my rear derailleur's indexing work for either the high or the low gears, but not both?

Obvious thought is a mismatched set of shifter/deralieur/cassette mixing pull ratios and number of gears incorrectly. …
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3 votes

Replaced drivetrain but gears still skipping

Most likely cause is the shifter cables are binding. My recommendation would be replace them with new ones, consider new outers as well as inners, these are relatively cheap and new inner and out will …
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5 votes

Bike cable tension not consistent when shifting up as compared to down

This is normally a divide and conquer problem, although on a cheap bike, it could be the sum of a number of small problems - if the latter, be prepared to have your patience tested. First instinct is …
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2 votes

Need easier gearing. What would the effect of changing the chainring or cassette be?

10 speed with a 42 really needs a Rad-Cage or Wolftooth Goatlink. It's a dogs breakfast, starts out smelling dodgy, and ends up smelling even worse. Some have succeeded, but many have found the conver …
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