2 x 9 vs 2 x 10

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Mark909
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2 x 9 vs 2 x 10

Postby Mark909 » Mon Oct 01, 2012 14:19 pm

Hello, could someone tell me the difference between 2 x 9 and 2 x 10.

I'm a bit confused about chainsets and gearing. Does this mean that the 2 x 10 will enable you to go faster or does it mean you will be able to climb hills easier in the lowest gear?

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nicklouse
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Re: 2 x 9 vs 2 x 10

Postby nicklouse » Mon Oct 01, 2012 14:21 pm

Yes and no, and no change.

it all depends on what you put together.
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Mark909
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Re: 2 x 9 vs 2 x 10

Postby Mark909 » Mon Oct 01, 2012 14:54 pm

Thanks I get it a bit more now.

So a 2 x 10 set up with 42-28t combination would enable you to go faster than a 2 x 9 with a 36-22t combination but the 2 x 9 with a 36-22t would make it easier to peddle up a steep hill in the granny gear?

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Re: 2 x 9 vs 2 x 10

Postby Mark909 » Mon Oct 01, 2012 14:56 pm

Whilst I'm trying to figure things out. Do you know the bits between the fork and the frame? What are they called?

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cooldad
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Re: 2 x 9 vs 2 x 10

Postby cooldad » Mon Oct 01, 2012 15:01 pm

Headset?
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supersonic
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Re: 2 x 9 vs 2 x 10

Postby supersonic » Mon Oct 01, 2012 15:03 pm

Wheels? Hubs?

How fast you can go depends on the highest gear: so you need to look at cassette ratios too. Most cassettes have a high gear of 11t, so a 42/11 is the fastest gear, assuming you can pedal it fast enough.

The low gear, well depends on the cassette large cog now.

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Re: 2 x 9 vs 2 x 10

Postby Chunkers1980 » Mon Oct 01, 2012 15:22 pm

I feel this is a bit of a John McEnroe moment?

Mark909
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Re: 2 x 9 vs 2 x 10

Postby Mark909 » Mon Oct 01, 2012 15:25 pm

Ah I see I'm getting it the wrong way round.

I just found this anatomy of a mountain bike picture which is a great help!

Image

Higher rez version here http://www.khurramweb.com/images/anatomy.jpg

Cooldad I think the bit I meant was the bottom cup and bearing and the top cup and bearing!

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cooldad
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Re: 2 x 9 vs 2 x 10

Postby cooldad » Mon Oct 01, 2012 15:43 pm

Which collectively is called the headset.
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Re: 2 x 9 vs 2 x 10

Postby Mark909 » Mon Oct 01, 2012 16:28 pm

Awesome thanks for the links cooldad

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felix.london
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Re: 2 x 9 vs 2 x 10

Postby felix.london » Mon Oct 01, 2012 16:51 pm

Just to let you know my top gear of 36x11 is plenty fast enough for everything I ride over here

2x10 set up btw. 22/36 x 11-32
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Mark909
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Re: 2 x 9 vs 2 x 10

Postby Mark909 » Mon Oct 01, 2012 17:35 pm

Thanks Felix. The reason i asked is that I bought the shimano slx double chainset when it was cheap on CRC a while ago.

Whilst riding at a trail centre the other day I got thinking that when I get it installed my mates will leave me behind on the forest road sections between singletrack and i'll just see tham riding off into the distance!

Its 2 x 9. 22/36 x 11-34

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The Northern Monkey
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Re: 2 x 9 vs 2 x 10

Postby The Northern Monkey » Mon Oct 01, 2012 18:21 pm

Mark909 wrote:Hello, could someone tell me the difference between 2 x 9 and 2 x 10.


2

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Re: 2 x 9 vs 2 x 10

Postby Mark909 » Mon Oct 01, 2012 19:54 pm

Hah thanks for that northern monkey you made me laugh

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The Northern Monkey
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Re: 2 x 9 vs 2 x 10

Postby The Northern Monkey » Mon Oct 01, 2012 20:34 pm

I'm actually surprised no one got there before me! :D

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The Rookie
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Re: 2 x 9 vs 2 x 10

Postby The Rookie » Tue Oct 02, 2012 13:09 pm

Mark909 wrote:Whilst riding at a trail centre the other day I got thinking that when I get it installed my mates will leave me behind on the forest road sections between singletrack and i'll just see tham riding off into the distance!

On MTB tyres you won't max out anything over a 36/11 for very long, there is simply too much drag, I went from 32/11 to 36/11 and am considering going back as I don't use the top gears very often.

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felix.london
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Re: 2 x 9 vs 2 x 10

Postby felix.london » Tue Oct 02, 2012 13:35 pm

Mark909 wrote:Thanks Felix. The reason i asked is that I bought the shimano slx double chainset when it was cheap on CRC a while ago.

Whilst riding at a trail centre the other day I got thinking that when I get it installed my mates will leave me behind on the forest road sections between singletrack and i'll just see tham riding off into the distance!

Its 2 x 9. 22/36 x 11-34


Are these forest roads down hill and made of tarmac? 36 x 11 will be fine if they're not. And I'll second what The Beginner says; for my next build I'm going with a 22/32 crankset. Plenty fast enough for anything I ride. Tbh - I'm more concerned with being able to slow down over here :shock:
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Northwind
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Re: 2 x 9 vs 2 x 10

Postby Northwind » Tue Oct 02, 2012 14:29 pm

The actual difference between 3 chainrings and 2 is very small- you don't lose 9 gears as you might assume, because mostly it's duplication. With a traditional 22-32-44 setup vs a 22-36 setup, you lose only the top 2 and a half gears
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Chunkers1980
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Re: 2 x 9 vs 2 x 10

Postby Chunkers1980 » Tue Oct 02, 2012 15:04 pm

And if you do do, you'll find yourself using the smaller cogs on the rear more which is not as good for wear and longevity of the whole system.

Mark909
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Re: 2 x 9 vs 2 x 10

Postby Mark909 » Tue Oct 02, 2012 16:22 pm

Great thanks for the advice guys


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