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  • - Gears on a bike can seem really complicated.

  • I mean, in a car

  • you've probably only got six to worry about or,

  • you might drive an automatic, in which case you don't need

  • to worry at all.

  • But on a bike, you might have 18, 20,

  • 22, maybe even 33 gears.

  • So what are you supposed to do with them all?

  • (smooth, upbeat jazz music)

  • Well the good news is, firstly, that you can forget

  • about the number of gears that you have.

  • It's not actually important.

  • There are gears on my bike that I literally never use.

  • What is crucial, though, is the range of gears

  • that you've got and being able to swap

  • from your easiest gear, right through to your hardest gear.

  • So,

  • instead of explaining about all the different gears,

  • what I'm gonna give you now

  • is some basic rules.

  • So, your left hand controls big jumps in the gears

  • by moving the chain from the little cog

  • to the big cog at the front,

  • which are also called your chain rings.

  • Whereas your right hand

  • moves the chain across the smaller cogs at the back

  • and that makes finer adjustments.

  • You'll probably find

  • that when you're riding fast, so above 18 miles an hour

  • or about 30 kilometres an hour, that you'll be in

  • your big chain ring at the front, and when you're riding

  • on the flat, and climbing,

  • you'll be in your little chain ring.

  • But, you'll probably also find

  • that your left hand generally doesn't do all that much.

  • Your right hand will be much busier.

  • How do you know, then, when you're in the right gear?

  • Well, it is actually very straightforward.

  • You'll be pedaling

  • at between 70 to 100 pedal revolutions per minute,

  • and you'll be putting in the effort that you want to put in.

  • So, not going too hard

  • in order to keep the gear turning over, but then

  • not pedaling really fast and not going anywhere, either.

  • So, it is quite straight forward.

  • There are, however, one or two mistakes that you will

  • need to avoid.

  • Firstly, you want to make sure

  • that, if possible, you change gear

  • before you really need to.

  • So, in advance of perhaps a hill that's coming up.

  • Because if you do leave it a bit late,

  • gears don't generally like changing under pressure.

  • So, if you have to change from your big chain ring

  • to your little chain ring when you're on a climb,

  • you may find it's actually quite hard to do so.

  • So,

  • plan in advance

  • and

  • try and ease off the gears slightly when you do change.

  • One final point to be aware of, and that, is as I said

  • at the beginning, there are certain gears

  • that I almost never use.

  • Firstly, because

  • they actually don't feel all that nice

  • to use, but they also

  • put the chain

  • under a little bit more pressure than it would normally be.

  • So if you find that you're in your big chain ring

  • and the big cog at the back, that's called cross chaining,

  • and it will, if you do it a lot,

  • wear the chain out a bit more quickly.

  • And then conversely, the small chain ring and the smallest

  • cog in the back would also do the same thing.

  • But then, that is literally it.

  • Gear shifting

  • made easy.

  • Now, if you want some more content like this on GCN,

  • your first thing to do is to subscribe to the channel.

  • We have new videos up everyday and it's completely free.

  • So make sure you click on the globe and it'll do it for you.

  • And then for more content, well set your gear shifting

  • up to another level, you could click up there for how to

  • change gear like a pro, or, for some tips on how to

  • actually set up your gears, click just down there.

- Gears on a bike can seem really complicated.

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自転車でギアを変えるには? (How To Change Gear On Your Bike | Road Bike Shifting Made Easy)

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    dkdk に公開 2021 年 01 月 14 日
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