Chainring ratio compatibility

trivial_poursuivant
trivial_poursuivant Posts: 1,136
edited May 2017 in Workshop
I am changing the chainrings on my Ultegra chainset. I currently have 52-36 as this was all that was available when I bought it. I am going to put a 53 tooth chainring on but not sure on changing the inner ring from 36 to 39. Would the 36 still work fine with the 53? I know it's only 1 tooth extra so shouldn't matter but you never know. I don't really use my small ring that often since I never tackle any really steep climbs I can't get up on the big ring but I do drop down now and then to spin up hills if I'm knackered out on longer rides

TIA

Comments

  • svetty
    svetty Posts: 1,904
    Not worth bothering to change a 52 to a 53 IMO....
    FFS! Harden up and grow a pair :D
  • Svetty wrote:
    Not worth bothering to change a 52 to a 53 IMO....

    That's yours. Mine is I notice it so there you go.
  • svetty
    svetty Posts: 1,904
    Svetty wrote:
    Not worth bothering to change a 52 to a 53 IMO....

    That's yours. Mine is I notice it so there you go.

    First you ask a fairly basic question about chain-ring compatability and then you somewhat petulantly claim that you can detect a 2% difference in chainring size. Hmmmm.......... :roll: :roll:

    Still, there are bigger issues in the world so perhaps I shouldn't bother to debate this one...
    FFS! Harden up and grow a pair :D
  • Svetty wrote:
    Svetty wrote:
    Not worth bothering to change a 52 to a 53 IMO....

    That's yours. Mine is I notice it so there you go.

    First you ask a fairly basic question about chain-ring compatability and then you somewhat petulantly claim that you can detect a 2% difference in chainring size. Hmmmm.......... :roll: :roll:

    Still, there are bigger issues in the world so perhaps I shouldn't bother to debate this one...

    Hang on. I ask a question that you fail to answer with something other than your opinion which was not asked for. I asked are they compatible not what your personal opinion to whether I will notice or not. That's not up to you. Roll your eyes all you like but you offer nothing to the question posed. Wasting your own time and mine. And it's not about noticing 2% it's about feeling comfortable in certain ratios I am used to with chainring and cassette combinations. I can change 1 chainring or 3 cassettes on 3 wheel sets. Since Cassettes are more expensive to replace x3 than the single chainring it's a valid point.
  • andcp
    andcp Posts: 644
    Back nearly OT. Similar situation, I'm using a short cage with a 34/52 front and 12/28 rear. It's not recommended by Shimano but works for me.
    "It must be true, it's on the internet" - Winston Churchill
  • trailflow
    trailflow Posts: 1,311
    it's only 1 tooth

    it's only 1 tooth
  • The Rookie
    The Rookie Posts: 27,812
    it's not about noticing 2% it's about feeling comfortable in certain ratios I am used to with chainring and cassette combinations. I can change 1 chainring or 3 cassettes on 3 wheel sets. Since Cassettes are more expensive to replace x3 than the single chainring it's a valid point.
    It's in your head to be honest, or 2% gradients or 1mph difference in headwind would also mess with your CDO.
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • trailflow wrote:
    it's only 1 tooth

    it's only 1 tooth

    If it was only 1 tooth is only 1 tooth why exactly would semi compacts exist in the first place?

    In the middle of the cassette ratios change when it comes to preference in cadences etc. Obviously too many people on here do not understand this concept. :?
  • Forget personal opinions etc. Fact is I have bought 1 x 53 chainring . Question I have STILL unanswered is do I NEED to change the inner ring as well?
  • trailflow
    trailflow Posts: 1,311
    My reply was in relation to the compatibilty not ratio's. Which is what you're asking. 1 tooth bigger will not throw your drive train into haywire. It may shift a little more sluggishly that's all.
  • trailflow wrote:
    My reply was in relation to the compatibilty not ratio's. Which is what you're asking. 1 tooth bigger will not throw your drive train into haywire. It may shift a little more sluggishly that's all.

    Thank you. It was not so much the front mech adjust on the frame but more of the jump in gap from 53 to 36 instead of 39. Will the sweep of the derailleur catch the chain correctly to push it over was more my concern.
  • drlodge
    drlodge Posts: 4,826
    If have a 34/50 chainring and 11-27 cassette, and change to 36/52 with 12-29 cassette, will I notice a difference? :roll:

    Answer: Yes, my wallet will be lighter.
    WyndyMilla Massive Attack | Rourke 953 | Condor Italia 531 Pro | Boardman CX Pro | DT Swiss RR440 Tubeless Wheels
    Find me on Strava
  • drlodge wrote:
    If have a 34/50 chainring and 11-27 cassette, and change to 36/52 with 12-29 cassette, will I notice a difference? :roll:

    Who asked this question? I didn't!!!
    Answer: yes, my wallet will be lighter

    Not when I bought new ring for £30 which is a lot less than I could probably get for the old one with only a few hundred miles on it.

    Add to that the cassette remains the same only the front changes your post is moot
  • milemuncher1
    milemuncher1 Posts: 1,472
    trailflow wrote:
    My reply was in relation to the compatibilty not ratio's. Which is what you're asking. 1 tooth bigger will not throw your drive train into haywire. It may shift a little more sluggishly that's all.

    Thank you. It was not so much the front mech adjust on the frame but more of the jump in gap from 53 to 36 instead of 39. Will the sweep of the derailleur catch the chain correctly to push it over was more my concern.

    It's a bit of a drop :shock: but it will work.
  • meanredspider
    meanredspider Posts: 12,337
    I've run 50/33 (a 17-tooth step) and it was fine. I wanted to steal an extra tooth for climbing because 30 was the largest cassette at the rear I could fit.
    ROAD < Scott Foil HMX Di2, Volagi Liscio Di2, Jamis Renegade Elite Di2, Cube Reaction Race > ROUGH
  • trailflow wrote:
    My reply was in relation to the compatibilty not ratio's. Which is what you're asking. 1 tooth bigger will not throw your drive train into haywire. It may shift a little more sluggishly that's all.

    Thank you. It was not so much the front mech adjust on the frame but more of the jump in gap from 53 to 36 instead of 39. Will the sweep of the derailleur catch the chain correctly to push it over was more my concern.

    It's a bit of a drop :shock: but it will work.

    Cheers. As MRS says also. Bigger gaps have worked. I was sure stepping down would always be fine but dragging the chain back onto the big ring can sometimes be a problem on a big gap but im just going to give it a try. In the long run it'll just be more taking the chainset on and off.
  • keezx
    keezx Posts: 1,322

    If it was only 1 tooth is only 1 tooth why exactly would semi compacts exist in the first place?

    Weak cyclists wanna look a bit less weak with a 36....

    Sorry , I can't take folks serously who want a 53 for a 52....
  • I don't think many people take anything you say seriously anyway.
  • The Rookie
    The Rookie Posts: 27,812
    More seriously than wanting to change the chainring by 1 tooth though.......
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • The Rookie wrote:
    More seriously than wanting to change the chainring by 1 tooth though.......

    I manage to get a chainring very cheap. It so happens to be different from the one I bought originally. If I had been able to I would have got 53/39 but was unavailable. I am not deliberately going out of my way to change this just for the sake of it. It's only cos I got a cheaper one. End of the day I see people speed hundreds if not thousands on wheels that are a few hundred grams lighter than the ones they already have. I spend £30 on a chainring that normally retails at 3 times that and I'm the one not to be taken seriously. Dick heads who seem to know better when they actually know sfa and just want to mock with without actually having any solution to a question posed. Wasting everyone's time just to look a smug tw at. I pity people like you.
  • svetty
    svetty Posts: 1,904
    The Rookie wrote:
    More seriously than wanting to change the chainring by 1 tooth though.......

    I manage to get a chainring very cheap. It so happens to be different from the one I bought originally. If I had been able to I would have got 53/39 but was unavailable. I am not deliberately going out of my way to change this just for the sake of it. It's only cos I got a cheaper one. End of the day I see people speed hundreds if not thousands on wheels that are a few hundred grams lighter than the ones they already have. I spend £30 on a chainring that normally retails at 3 times that and I'm the one not to be taken seriously. Dick heads who seem to know better when they actually know sfa and just want to mock with without actually having any solution to a question posed. Wasting everyone's time just to look a smug tw at. I pity people like you.

    The problem is that you have managed to antagonise several other posters in this thread, not just the one. There's always a chance of one person being a dick-head sure, but all of them?? Think about it......
    FFS! Harden up and grow a pair :D
  • keezx
    keezx Posts: 1,322

    I manage to get a chainring very cheap. It so happens to be different from the one I bought originally. If I had been able to I would have got 53/39 but was unavailable. I am not deliberately going out of my way to change this just for the sake of it. It's only cos I got a cheaper one.

    You were only talking about how much better 1 tooth more was, nothing about the price.
    Price makes sense, 1 tooth does not...
  • Svetty wrote:
    The Rookie wrote:
    More seriously than wanting to change the chainring by 1 tooth though.......

    I manage to get a chainring very cheap. It so happens to be different from the one I bought originally. If I had been able to I would have got 53/39 but was unavailable. I am not deliberately going out of my way to change this just for the sake of it. It's only cos I got a cheaper one. End of the day I see people speed hundreds if not thousands on wheels that are a few hundred grams lighter than the ones they already have. I spend £30 on a chainring that normally retails at 3 times that and I'm the one not to be taken seriously. Dick heads who seem to know better when they actually know sfa and just want to mock with without actually having any solution to a question posed. Wasting everyone's time just to look a smug tw at. I pity people like you.

    The problem is that you have managed to antagonise several other posters in this thread, not just the one. There's always a chance of one person being a dick-head sure, but all of them?? Think about it......

    I antagonise. Wait on. I asked a question. A few people decide that instead of answering the question they will come out with unhelpful opinions. Why not just answer the question? Personally I got an answer eventually and I am grateful to those who did genuinely try to come up with an answer. How or why I am changing is completely irrelevant to the point. It's not for you or anyone else to say why I am doing it. Question was will a 53 still work with a 36 tooth. That was all I required an answer to. I didn't need your opinion of permission. So again, if you helped me, thank you, if not please go f@ck yourselves. I didn't come on here to make pals. Which after a few posts I have read on here seems pretty evident is unlikely since there are a lot of self opinionated idiots who offer nothing and would serve the forum better by just keeping quiet. I will continue reading as there are some good people on here who offer very good advice. There are also utter knobs. You decide which one you want to be.