29er gear ratios
 

[Closed] 29er gear ratios

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you guys who switched from 26er to 29er, did/do you run the same gear ratios and just get used to longer overal gearing of the 29er or did/do you alter the gearing to something more like the 26er.

if it's the latter, what chain ring/cassette combination are you using.

cheers


 
Posted : 10/08/2010 12:11 am
 mboy
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OH MY GOD!

You ever gonna stop with the questions? ๐Ÿ˜‰

Basically, I pretty much took the option that I went for approximately the same ratios as I would on a 26" wheeled bike, figuring that I'd just pedal harder if needed... 29ers have got more traction anyway, so getting up out of the saddle and pedalling harder is less likely to break traction than it is with smaller wheels.


 
Posted : 10/08/2010 1:11 am
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Geared the same, SS slightly lower


 
Posted : 10/08/2010 6:34 am
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Couple of teeth more on the back and you should get around the same ratio. Or be really anal about it and use sheldon brown's calculator. Not that I'd ever do such a thing ๐Ÿ˜‰


 
Posted : 10/08/2010 6:40 am
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I had 24/36 and 11-34 on my 26" bike and changed to 22/32 and 11-34 which seems pretty spot on.

Can't say that I've found the 29er to have significantly more traction when climbing though.


 
Posted : 10/08/2010 6:51 am
 ton
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i run 22/32 front and 12/36 rear on both my 29r's.

with a 12/36 on the back, i tend not to have to drop into the 22 front much. 8)


 
Posted : 10/08/2010 7:31 am
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32:16 to 32:18 on my 26 single speed, 33:19 on my 29er ss


 
Posted : 10/08/2010 9:26 am
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i have a 40t big ring on one of my 29ers, 22/32/40. otherwise i was mostly using the larger sprockets when in the big ring, extreme crossover causing noisey drivetrain. i've also had a 2x9 22/34, which worked well but i thought i might as well have a big ring if i'm using a front mech.
i have a standard 22/32/44 on another that i use mostly for racing (rarely use 44x11,13,15) and 33x20 ss.
if i could get a cheap/deore level chainset with 20/30/40 i'd buy it, but i'm not prepared to spend a lot to achieve it because its not that important to me.


 
Posted : 10/08/2010 9:44 am
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My 29er is 4lb or so lighter, so feels no harder to pedal.
Definitely more traction - damp corners at Whinlatter felt much better (different tyres obviously too, but still better IMHO)


 
Posted : 10/08/2010 9:53 am
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My 29er is 4lb or so lighter, so feels no harder to pedal.

That's a good'un.


 
Posted : 10/08/2010 9:54 am
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damp corners at Whinlatter felt much better (different tyres obviously too, but still better IMHO)

That's even better!


 
Posted : 10/08/2010 10:24 am
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if talking about single speed then yes - adjust the ratio.

gears - then mtfu ๐Ÿ˜‰


 
Posted : 10/08/2010 10:30 am
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What happens if you pre wet the tyres?


 
Posted : 10/08/2010 10:31 am
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thomthumb - if talking about single speed then yes - adjust the ratio.

gears - then mtfu

i was looking on the list of smilies but there isn't one for "yawn" ๐Ÿ˜‰


 
Posted : 10/08/2010 10:44 am
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i have the same rear cassette (no idea of the range, i just ride it) as i had when running 3x9 with a standard Lx chainset (no idea of tooth count here either), now just got s 32T chainring at the front

HTH


 
Posted : 10/08/2010 10:45 am
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having a play with excel *pauses for nerd comments* i reckon dropping a 12/36 on the back will bring it close enough to what i'm used to.

was thinking about ss but then looked at the calendar and realised it was 2010 already! :mrgreen:


 
Posted : 10/08/2010 11:01 am
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My 29er is 4lb or so lighter, so feels no harder to pedal.

That's a good'un.

Assuming irony/sarcasm, why's it a good 'un out of interest.
You don't find lighter bikes easier to pedal (up hill mostly)?

damp corners at Whinlatter felt much better (different tyres obviously too, but still better IMHO)

That's even better!

Why so? Altura trail is ntoriously slippery, but the 29er tyres felt better than any 26" tyres I've used in similar conditions.


 
Posted : 10/08/2010 11:28 am
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Yes, a lighter bike is a bit easier to pedal up hill though in reality a lot of it is just in your head. 4lbs to level out the forces of 10% ish higher gearing would require you and your 26" bike together to weigh about 40lbs...


 
Posted : 10/08/2010 11:38 am
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would require you and your 26" bike together to weigh about 40lbs...

That's an interesting assumption/calculation!
You're probably correct in large part on the "in the head" bit though.


 
Posted : 10/08/2010 11:43 am
 ro
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Q: I like numbers. Should I become a mountain biker?

A: Yes.


 
Posted : 10/08/2010 11:43 am
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Q I think I'm really insightful, funny, clever, etc. despite evidence to the contrary. Should I become ro.
A Yes

๐Ÿ™„


 
Posted : 10/08/2010 11:47 am
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ro... no
clubber... 11.54% ๐Ÿ˜‰

EDIT; btw, you're not just lugging your bike up that hill but your body aswell, if like me you're 14 stones and ride a 30lb bike then you need to shed 24lbs to make up for longer 29er gearing. that's either gonna cost a lot or hurt a lot!


 
Posted : 10/08/2010 11:50 am
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10ish

by my maths it's 11.55343422545% - you forgot to carry the sin23 ๐Ÿ˜‰


 
Posted : 10/08/2010 11:50 am
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Don't understand the maths, but I'm nearly 14 stone and it feels easier, and if it feels easier, that's enough for me.


 
Posted : 10/08/2010 12:00 pm
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It'd cost me a lot more stu!


 
Posted : 10/08/2010 12:04 pm
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Only on the SS, went from 36:19 (26er) to 32:19 (29er)


 
Posted : 10/08/2010 12:16 pm