Help I need smaller gears - what can I do? A GUIDE

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John.T
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby John.T » Fri Dec 28, 2012 14:54 pm

TheFD wrote:
John.T wrote:The smallest ring that will fit on those cranks is 38 teeth. For 50/34 you will need a new chainset.

So I would need to change the cranks as well? Would the front mech be ok?

Yes. You would need to lower it though. May need a link out of the chain too. If it works fine without then leave it alone.

SmoggySteve
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby SmoggySteve » Wed Jan 02, 2013 00:37 am

THIS THREAD IS OVER 4 AND A HALF YEARS OLD, LET IT GO DUDES!!!

mlebon
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby mlebon » Mon Feb 11, 2013 13:20 pm

Hi all,
My first post on here - and it's to do with the the very topic of wanting a wider range of gears to aid me up the local terrain that is glorious Snowdonia :) All the biking I've done in the last 10 years or so have been on my trusty old mountain bike that has a triple chainring - it has served me well on road and trail.
I have now got myself a new road bike last year that is kitted out with Microshift White - 10 speed, and with a compact 50/34 and 11/26 cassette. And surprise surprise - I'm really struggling with the hills around here - and it's a shame to have to adjust my routes as it is a stunning place to ride. I'm hoping to get fitter and stronger, but I still think changing the rear cassette to something like a 11/28 or 12/28 or something would be a wise move for me.
Can anyone tell me if there would be any problems with doing so regarding the RD as it is a short type. I don't think I would need to be changing the chain as it has only done around 200 miles.
Any info would be appreciated greatly - thanks!!

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John.T
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby John.T » Mon Feb 11, 2013 13:41 pm

The rear mech is listed for up to a 28 sprocket and a max difference of 33 so an 11/28 would be fine. You may get away with a 12/30 cassette. It would be OK with Shimano but I have no experience of Microshift.

mlebon
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby mlebon » Mon Feb 11, 2013 14:06 pm

Thanks for that John - good to know. Apparently the Microshift is fully compatible with Shimano and each component can be changed bit by bit with no problems - which was one of the reasons I had no fears of buying this bike - if I didn't like the components, then at least I could upgrade as I go along.
Very tempting idea, the 12/30 by the way :) I think I will try and go for the 11/28 in the hope that by getting fitter/stronger as the year goes on, then I will be sorted.
Many thanks once again!! :)

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ednino
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby ednino » Sun Feb 24, 2013 19:27 pm

Glad i spotted this topic. I recently bought a Giant Defy and i've done about 50 miles on it so far. I love how fast it is, but noticed i have to use the smallest gear alot on hills.

I've just looked and its an 12-25 cassette and 35/50 up front

No wonder it feels hard as my old XC bike had 11-34 :roll:

...and the XC bike was about the same weight :|

sickbuoy
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby sickbuoy » Wed Mar 06, 2013 18:52 pm

Would suggest going to a 11-27 or 12/28. I am thinking your chainset is a 34/50 not a 35 which is a compact so you should be fine with either of those. Which groupset is it you have?

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ednino
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby ednino » Thu Mar 07, 2013 18:50 pm

It is a giant defy 2 compact

I've now had a 11-28 fitted by my local bike shop. Loads better now

thanks

Gethinceri
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby Gethinceri » Sun Mar 17, 2013 00:44 am

What was the cost of purchase and fitting? I want to do the same on my Trek.

LittlePlums
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby LittlePlums » Sat Mar 30, 2013 22:50 pm

I currently have a Campag Veloce compact(50/34) with a 12-25 cassette. I find myself running out of gears on the longer and steeper hills in the area and find some of the gears are quite "samey". This may be because I am used to mountain bike gearing.

I would like to increase the range of gears and one option would be to go for a 13-29, but I'm a bit reluctant to lose the top end on my current set-up (12). What I want to know, therefore is, if it is possible to mix and match 2 cassettes to end up with, effectively a 12-29? I understand that Campagnolo have individual sprockets, so in my mind this should be possible, but I don't know if there are any limitations and appreciate that there would be bigger jumps in perhaps the middle gears.

You help would be much appreciated.
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ashburton1
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby ashburton1 » Thu Apr 04, 2013 12:51 pm

This is all incredibly useful. Thanks

Paulj700
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby Paulj700 » Fri Apr 12, 2013 15:20 pm

LittlePlums wrote:I currently have a Campag Veloce compact(50/34) with a 12-25 cassette. I find myself running out of gears on the longer and steeper hills in the area and find some of the gears are quite "samey". This may be because I am used to mountain bike gearing.

I would like to increase the range of gears and one option would be to go for a 13-29, but I'm a bit reluctant to lose the top end on my current set-up (12). What I want to know, therefore is, if it is possible to mix and match 2 cassettes to end up with, effectively a 12-29? I understand that Campagnolo have individual sprockets, so in my mind this should be possible, but I don't know if there are any limitations and appreciate that there would be bigger jumps in perhaps the middle gears.

You help would be much appreciated.


I'm in the same boat here, looking for a slightly smaller gear for hills. Miche do a cassette called the primato which is Campag compatible (in fact my bike has a miche 12-25 on it now).

The do it in 12-27 and 12-29 versions for about £32 from wiggle.

hannahk
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby hannahk » Sat Apr 13, 2013 16:45 pm

This thread is really helpful, especially for a newbie who doesn't know too much about this sort of thing!

Boabie38
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby Boabie38 » Fri Apr 26, 2013 23:48 pm

Hi guys,

Great thread. After riding a triple for 2 years last year I bought a Giant TCR with 105 gearing 52/39 and 12/25 was really struggling on the long climbs, my mates would spin away on climbs, while I was left grinding away....convinced myself it was down to the beer belly and I would get used it.

After a year the climbs are only slightly better (cadence can be as low as 65rpm) so I'm now thinking its time to change my gearing.

What would be the best setup and most cost effective to help with climbing? Do I go to a compact or stick with a standard and change the cassette (if so what would you recommend), would I need to change any other parts? At the moment all parts are 105 and have been used for about a year. Ideally I don't want to lose any topend speed, infact I could use some more, sometimes in 52/12 I spin-out only on descents mind you.

The good news the beer belly has got slightly smaller.

I know I have asked many questions..... 4 hours ago, I had no idea about gearing and cogs ratios, but doing some reading I have a gained a little but would really like to hear different opinions.

Many Thanks

Mark

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John.T
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby John.T » Sat Apr 27, 2013 09:20 am

http://www.chainreactioncycles.com/Models.aspx?ModelID=67228
Cheapest option is fit one of these. The 12/28 will fit with your rear mech OK. The 12/30 may be pushing it a bit but would probably be OK. You may need a new / longer chain depending on how worn / long your current one is. You could also fit a 38 inner ring which is as small as you can go on 130 BCD cranks. After that you are looking at a compact chainset.

Boabie38
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby Boabie38 » Sat Apr 27, 2013 11:31 am

Thanks John T,

As the bikes a year old I was expecting I would need a New chain, that eases
that cost

Would a 105 28-11 fit with the rear mech? I know this would cost more, than your suggestion.

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John.T
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby John.T » Sat Apr 27, 2013 12:05 pm

Yes. The 11/28 would fit. I prefer the 12/28 as I find the 16 sprocket much more use than the 11. I only have an 11 on my TT bike and that is more for a better chain line on the 12. I can not push the darn thing and I am doing over 40 mph before the 12 gets too much. Time to free wheel and recover.

Boabie38
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby Boabie38 » Sat Apr 27, 2013 13:19 pm

Thanks John.T

12/28 it is then.

Now these "races" uphill with the boys are going to become a lot fairer.

Mark

Manc33
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby Manc33 » Sun May 05, 2013 16:55 pm

I got a road bike with 30/40/50 front chainrings and a 12-25 on the back. I am so weak the lowest gear was far too high for me to get up hills (30 divided by 25 = 1.2) so, I "purged" the cassette, rear mech and chain off my MTB and now the setup is 30/40/50 front and 11-32 back. This gave me a lowest gear of 30 divided by 32 = 0.94 which granted is so low I hardly ever use it, but the point to me is that I still have all the gears I used to have anyway, I actually have a higher high gear because of the 11t sprocket. so the last 66% of the gears are the whole range of what the road bike was and the first 33% is lower gearing. The only downside to this is there is no close ratio anymore.

If you had to buy all the parts it wouldn't cost that much, you just need a long cage rear mech (Alivio is adequate, £30) then a new chain (£12) and a new cassette (check CRC for discounts, I got a SRAM PG850 for £20) so altogether this can be done for about £65.

It was either that or I don't get up hills and I didn't buy a bike to never see any scenery. 8)
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Re: Help I need smaller gears - what can I do? A GUIDE

Postby jibberjim » Tue May 21, 2013 10:00 am

Has anyone bodged a HollowTech2 MTB crank onto a road bike? The extra width would probably mean that it wouldn't manage to use the outer ring, but would it manage to use the inner alone?

I'm noodling on the possibility of being able to climb alp d'huez on my road bike with Otter, but I think I'll need a 29 or something...
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