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My dumb question about geared hubs

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  • #16
    Originally posted by Up Rite View Post
    Instead of a gearing up from 1:1, why not have it on a larger wheel 1:1 and 1: 0.65?
    They might be hard to find if you haven't seen them already and don't know what to search for, but there have been a number of discussions about why they are as they are and what other ways they might be. Certain forum members have argued with great passion for downgearing.

    E.g.:
    http://www.unicyclist.com/forums/showthread.php?t=95916
    http://www.unicyclist.com/forums/showthread.php?t=99913

    Not an owner of one myself but my Occam's Razor answer would be that the Schlumpf hub is what it is because that's what Florian himself wanted when he designed it. It was a labor of love, not an answer to consumer demands.

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    • #17
      The search function does not always yield what I seek.


      Human gyroscope in training.

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      • #18
        Originally posted by LargeEddie View Post
        They might be hard to find if you haven't seen them already and don't know what to search for, but there have been a number of discussions about why they are as they are and what other ways they might be. Certain forum members have argued with great passion for downgearing.

        E.g.:
        http://www.unicyclist.com/forums/showthread.php?t=95916
        http://www.unicyclist.com/forums/showthread.php?t=99913

        Not an owner of one myself but my Occam's Razor answer would be that the Schlumpf hub is what it is because that's what Florian himself wanted when he designed it. It was a labor of love, not an answer to consumer demands.
        Thank you LargeEddie, my concept was detailed here : http://www.unicyclist.com/forums/sho...t=99913&page=2
        http://monocycle.info
        http://www.leblogdumonocycle.fr/
        CITY XTP 26", MUNI KH26" & KH29", ROAD Oracle 32" and KH36"
        my goal : a 3 geared 29" to have only one uni for all kind of rides :-)

        Comment


        • #19
          Originally posted by Bouin-bouin
          Still under 3D design but no recent progress
          It has been presented somewhere in this forum, Greg Harper made some comments at this time. I had long discussion with Florian at Brixen Unicon and he confirmed the right concept
          Hier 18h33
          @Didier (Bouin-bouin) Since it's been your goal for all those years (on your signature), and since it looks like you have all the 3D work done (do you?), why don't you just make a prototype of it to see how it behaves and what must be modified and so on?

          Is it because you don't have the tools to make it, or the budget to make some parts (or all parts) made by a professional, a lack of time or is the 3D work just not complete yet, and in this last case, what are the remaining issues?
          - Geared kh36 + Nightrider Lite + Kh Tbar + HS33
          - Qu-ax 36" + nightrider +Q-handle+ cable rim brake
          - kh 29" + knard 29x3+ kh Tbar + HS33
          - Qu-ax trial 19"
          -24"&26" wheels and forks and spare stuffs.

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          • #20
            Originally posted by UniDreamerFR View Post
            @Didier (Bouin-bouin) Since it's been your goal for all those years (on your signature), and since it looks like you have all the 3D work done (do you?), why don't you just make a prototype of it to see how it behaves and what must be modified and so on?

            Is it because you don't have the tools to make it, or the budget to make some parts (or all parts) made by a professional, a lack of time or is the 3D work just not complete yet, and in this last case, what are the remaining issues?
            About 1/3 of the parts have been designed under CATIA V5 with strong support of Martin Charrier who is less available because preparing is PHD, me too; other points should be OK
            http://monocycle.info
            http://www.leblogdumonocycle.fr/
            CITY XTP 26", MUNI KH26" & KH29", ROAD Oracle 32" and KH36"
            my goal : a 3 geared 29" to have only one uni for all kind of rides :-)

            Comment


            • #21
              Originally posted by Up Rite View Post
              I see a few others here would go for a geared down hub.

              So how would a 24" with current gearing up be compared to a 36" geared down in various situations?
              A geared-up 24 would be better than a geared-down 36 in every conceivable scenario.

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              • #22
                Originally posted by tholub View Post
                A geared-up 24 would be better than a geared-down 36 in every conceivable scenario.
                I agree. It's useless to have a ton of spinning on a 36er. There's plenty of leverage for climbing from using 165 or 150mm.

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