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Cassette help please!

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  • May 18, 2013 at 1:17 pm #18826
    climbingkev

    Hi all, I’m new around here so hello – and go easy on me!

    I’ve got some events lined up for when summer arrives, namely the Dartmoor Classic and Etape du Tour and hills are not my forte (strange choice of events given my weaknesses, but they’re the ones we’re meant to target right!?). I have a compact chainset and 11-28 cassette. My question is how bigger cassette (sprocket) can I squeeze in on my 105 (5700 short cage) rear mech? Was wondering specifically if a 11-32 would fit and whether the real world gains would be significant?

    Any help appreciated,

    Kev

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  • December 30, 2014 at 9:56 am #736331
    0
    SPIKE718

    I “being of a certain age
    I “being of a certain age beyond 70” have ordered a 12-30 Ultegra chainset to replace my existing 11-28. My thinking is that it’s a relatively cheap way to give me an easier ride up the local hills and it will (hopefully) be a simple exchange. Again, hopefully, I won’t have to go down the road of a replacing the rear mech from the existing 6770.
    Would appreciate any thoughts or experiences in this regard.

    I have since made the change. A very simple swap out. Works very well indeed and the DI2 handles everything.

    December 1, 2014 at 4:30 pm #736329
    0
    birzzles

    2 points.
    1. 52/36 1 speed
    2 points.

    1. 52/36 1 speed with 11-32 sees to cover all bases.

    2. a 53/39/30 triple is the same as a standard chainset with the addition of a 30t ring if you need it.

    November 30, 2014 at 11:58 pm #736327
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    5th

    As far as gearing goes, run
    As far as gearing goes, run whatever you want that enables you to do the riding you enjoy. My mate runs either a double or triple depending on where he’s riding and at least an 11-28 cassette, sometimes bigger; but he’ll freely admit to being short, fat and unfit. I run compact and 12-25 (commuting) or 11-23 (racing) and can get up any hill up including 1:3s where I’m chewing on the bar tape, but what works for me would never work for my mate.

    As far as the whole 53/39 thing goes, few need bother. I can hit 80kmh+ on 50-12 or 50-11; at that speed your legs are a blur and 53-11 will make little difference. The bonus is that compact and a smaller cassette is both lighter and will give you closer ratios to avoid annoying cadence jumps, both of which matter to me. Why spend £££s on weight weenie bits when you can replace the stuff that wears out with something lighter for the same price?

    November 30, 2014 at 10:52 pm #736325
    0
    Yorky-M

    it is no problem, as long as
    it is no problem, as long as the 11 is a lock ring. and 11 can jump up to a 13 (second) sprocket with ease. Sram have an amazing 10T on the market.

    But are you really going that fast that a 12 isn’t enough?
    East Germans worked out in the 1990 that 107revs per min was the most efficient. Most modern coaches studding effort vs HR land in the 95-100 range. I can only manage a 90 ave- but 52 by 13 (103 inches) at 100 cadence is kicking above 35mph.

    November 30, 2014 at 9:44 pm #736323
    0
    Royal1664

    Would it be possible to take
    Would it be possible to take the 12t of a 12-30 cassette and replace it with an 11t so you would have a fast 11-30 cassette that could climb??

    September 10, 2014 at 2:20 pm #736321
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    ldb30

    How true chaps,already shed
    How true chaps,already shed 50lb,but want my 1st on strava,and have ordered my 11-32 cassette. and 18hrs after group ride with new club,sitting here in office with my legs still aching!!, but at least i slept like a baby!!!………happy cycling…. 8|

    September 10, 2014 at 2:05 pm #736319
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    Simon E

    pablo wrote:The only way

    pablo wrote:
    The only way you’ll be decent at climbing is to practice and be as light as you can.

    Pah, cheap talk like that won’t sell more carbon to the Mamils 😉

    Seriously, as pablo says, shedding the lard and climbing hills are the only two things that really make a difference.

    September 10, 2014 at 7:31 am #736317
    0
    fukawitribe

    ldb30 wrote:CXR94Di2

    ldb30 wrote:
    CXR94Di2 wrote:
    It’s worthwhile if you struggle with the 30t getting up hills in your area. For the 11t , how fast do you want to go? I can hit 55 mph without even pedalling on steep hills!

    Well,it would be nice to go just a bit faster down hills,like my triple trek?,and i know its less than 10% difference in real terms,but im chasing 1st spot on Strava,and am currently 3rd out of 471!. More importantly ive joined a new cycle club tonight,who have pushed me hard,maybe i just need to concentrate on fitness more??!!…….. :”(

    Let me get this straight – you spec your cassette so you can do 90+ km/h to grab a downhill Strava segment ?

    Each to their own 🙂

    September 9, 2014 at 10:22 pm #736315
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    ldb30

    CXR94Di2 wrote:It’s

    CXR94Di2 wrote:
    It’s worthwhile if you struggle with the 30t getting up hills in your area. For the 11t , how fast do you want to go? I can hit 55 mph without even pedalling on steep hills!

    Well,it would be nice to go just a bit faster down hills,like my triple trek?,and i know its less than 10% difference in real terms,but im chasing 1st spot on Strava,and am currently 3rd out of 471!. More importantly ive joined a new cycle club tonight,who have pushed me hard,maybe i just need to concentrate on fitness more??!!…….. :”(

    September 9, 2014 at 10:20 pm #736313
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    pablo

    Choose the equipment that
    Choose the equipment that suits the situation for you not what’s fashionable.
    I run 11-25 on a compact (mainly flat area) but if I know i’ve got some Cat 3 & 4 long climbs i’ll swap to my 12-30 takes five minutes to do with practice. I also have a tripple which i’ve never got on with but if i was doing a mega climb and the gearing worked out lower i’d be walking past the carbon. The only way you’ll be decent at climbing is to practice and be as light as you can.

    September 9, 2014 at 7:03 pm #736311
    0
    Hensteeth

    Well I have been out on the
    Well I have been out on the new carbon bike with 12-28 cassette (as opposed to previous 11 – 32 alloy bike) and done a bit of hill work. 50 miles with 2000ft of climbing, including 4 fords and one cat 4 hill. It is a route I have done quite often, and it is always quite hard but I can ride it all no problem.
    The new bike is definitely faster all round but I thought I was having to push harder on the hills, although I haven’t done any hills for a while so am no doubt rusty!
    However when I got back and looked at Strava it turns out I had new PR’s on all the hills and other segments, knocking minutes off some of them.
    So it just shows how true the old saying is ” it doesn’t get easier you just get faster”!
    Definitely feel better for pushing the bigger gear.
    Got the “Durham Beast” this weekend so will see how I feel after that! :S

    September 9, 2014 at 5:50 pm #736309
    0
    CXR94Di2

    It’s worthwhile if you
    It’s worthwhile if you struggle with the 30t getting up hills in your area. For the 11t , how fast do you want to go? I can hit 55 mph without even pedalling on steep hills!

    September 9, 2014 at 2:41 pm #736307
    0
    ldb30

    +2 & -1
    i have a new trek
    +2 & -1
    i have a new trek Domane that has a compact 12-30, and as much as i love the bike and its gears, i have 2 issues, i would like a bigger gear on rear for help on steep hills,and a small one for the flats and down hills,ideally maybe a SRAM 11-32. Is it worthwhile?,or too similar to bikes standard set up?…….

    August 15, 2014 at 8:10 am #736305
    0
    CXR94Di2

    dunnoh wrote:Is it possible

    dunnoh wrote:
    Is it possible to get Di2 in 32? I might get that to go with my World Champion Socks and Sky Jersey. Hopefully that alone will try to keep the ‘true’ roadies from making eye contact with me while out riding.

    You certainly can, straight swap of cass and gs long cage derailleur.

    You can even have a 36T cass with a cage from another shimano mtb derailleur. Or there is a company in the USA that will modify your derailleur with their own design.

    I did a quick check and I have nearly the same ratios as a triple, so I am totally happy with my setup.

    From a personal point , I wish I could climb up long hills more quickly, but what I tend to lose on the way up I tend to gain back on the down.

    August 15, 2014 at 4:06 am #736303
    0
    macrophotofly

    I read the triple-users
    I read the triple-users comments with interest. I’ve got a compact for riding in the mountains near me in Tokyo with a 11-26 on the back (and I’m fairly fit for a 40-year old). It’s perfect for going uphill (34 front) and downhill (50 upfront is fast enough for me), but rides on the flat around town in winter time are constant swapping between the front cogs and never being in the middle of the rear.
    Triple sounds one way to go, but I’ve decided to go the other …..and re-place the compact cogs on my winter bike with a single 42 upfront. Got one yesterday to fit my exisiting 110 SRAM crank and I’ll be going 1×10 this weekend. Interestingly it has the added benefit of allowing the existing RD to be able to take a slightly larger granny on the rear if I needed it. I’ve got a feeling this will become a far more usable (and also slightly lighter) townie-club bike……

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