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  • Triton Triple Questions

    Hello all,
    I have done a pretty thorough search of the forum and read quite a bit about the UCM and d'Brake options for going disc with a non-tabbed frame - but seeing as I have a couple of questions regarding my Triton Triple frame I thought it might be useful to 'house' them all under a new thread.

    1) I've read the specs of the frame and see it says max 29" tyre is 2.5" yet I seem to remember reading it could take a Knard. Am I right? And what is the max if running a fat 24"? I know that at 26" it is 3.8 - any chance it could take a 24x4 on a LM rim?

    2) Regarding brakes: do Maguras fit if using a Surly LM rim without special mounts or do you need something like the Tensils that allow more sideways adjustment?

    With discs I see that the MountainUni UCM is probably the best choice for a Triton. With the Triple I was told some filing is needed to get it to fit. I know this may be a tad demanding of me, but could someone post a pic of their set up?

    Again with the d'Brake option specifically with Tritons (and even more specifically with the Triple) is my only option to stack up washers to create a planar surface and tighten down the bracket side/arm to direct the braking force into the frame? Or is there some filing needed also. A photo would be lovely if some kind soul would oblige

    I do like disc brakes from riding my Oregon and KH36(tabbed) but I'm a little cautious to rig something up that may not last or even damage the superb Triton - so I am being extra careful here before deciding on a disc set up over the 'old school' Magura route. (With the Triple a Magura set up does have some sense and a kind of charm..)

    I will appreciate any tips or info people can give me - and if I do go the disc route I'll make a little video tutorial on how to set up an outboard disc with with Spirits using either a UCM or d'Brake

    Thanks in advance,
    Felix
    Last edited by mindbalance; 2015-01-14, 03:43 PM.
    The wheel is come full circle, I am here.

  • #2
    (Just for the sake of your information gathering, I add the link to the other thread about Triton Triple with some other answers).

    I don't remember a setup with a Large Marge 24 and Magura but I know for sure that it takes a Large Marge 26 with a 26x4 tire without any problem including using Magura with the regular brackets (translation drop down on the top of the right column). I don't see why it wouldn't work with the 24 inches version as I am sure they spec'ed their frame when the Large Marge was out and available. You can double check the distance between the frame's legs at the 26in magura mount and the 24in magura mount. The Large Marge has a fixed width, so if the measurements are the same, you're golden

    And as for the D'Brake or MountainUni UCM, you won't need to use shim because the frame as a flat surface you can tighten against (like a KH). At least for the MountainUni UCM, they have a v2 version that is compatible out of the box with Triton frames so that should be the way to go if you are unsure about filling a D'Brake.

    And finally, don't be shy with your frame, you will have a hard time really damaging titanium especially just with a caliper & a disc in the even a D'Brake failure (your bones may not be as forgiving on a bad landing... ).
    Last edited by Siddhartha Valmont; 2015-01-14, 06:03 PM.
    => CrMo 29: KH XC rim, Nimbus CrMo hub, Spirit 110/137 & Schwalbe Big One
    => Flansberrium 26: Nextie rim, JumboJim 4.0, Spirit 127/150mm, M4O ISIS

    Comment


    • #3
      I thought filing down the mountainuni ucm caliper would be demanding, so I was hesitant at first. But I just got another ucm set-up and it took me less than 10 minutes to do. Just get a rounded aluminum filer at any hard wear store for a few bucks and grade down the holes a little but until your bolts can be properly fitted to the bottom bracket and frame. My caliper is set-up to my muni right now, but I may be getting my frame powdercoated soon, in which case I'll take pictures of how and what I did. It probably won't be until 1-2 weeks though.

      I'm also trying out the magura rim brakes on another build just to see if I prefer disc or rim brakes. The only limitation I've found in using the mountainuni set-up is the fact that SINZ cranks do not exceed 145mm (as far as I have found...does anyone know if there are 150+ sinz cranks out there?). I would definitely prefer more leverage. However, I do like the speed of the 145mm vs. 165 so maybe I'll get used to it. It's all a matter of preference. Jeff is really helpful at Mountainuni and Bryce is really helpful with Maguras. Whichever way you go, keep us updated with lots of pics!!
      Last edited by bwrightback; 2015-01-14, 06:13 PM.

      Comment


      • #4
        Originally posted by mindbalance View Post
        Again with the d'Brake option specifically with Tritons (and even more specifically with the Triple) is my only option to stack up washers to create a planar surface and tighten down the bracket side/arm to direct the braking force into the frame? Or is there some filing needed also. A photo would be lovely if some kind soul would oblige
        Since the Triton Frames have machined bearing housings (and not the cheap stamped sheet metal ones) there is already the needed planar surface. No washers or adaptors needed.

        Machined bearing housings:


        Sheet metal beraing housings:


        For sheet metal beraing housings you need washers or an adapter

        Washers:


        Adapter:
        Einradfahren in Sachsen:
        einradsachsen.com
        f/EinradSachsen
        07.06.2020: Europamarathon

        Comment


        • #5
          Originally posted by bwrightback View Post
          The only limitation I've found in using the mountainuni set-up is the fact that SINZ cranks do not exceed 145mm (as far as I have found...does anyone know if there are 150+ sinz cranks out there?).
          If you'd consider it, longer ISIS cranks have been shortened for use on recumbents, and by special needs riders, kids on the back of tandems, etc. E.g., this guy, who's a long-time stalwart of various cycling lists:
          http://bikesmithdesign.com/Short_Cranks/index.html

          It looks like he could do 150-ish 110 bcd ISIS cranks of some kind if not Sinz. The site shows FSA Gossamer cranks shortened to 153.5mm with 130 bcd--the hole spacing for the chainrings/MountainUni disc--but I've seen them @110.

          Fwiw...

          Comment


          • #6
            Thanks everybody for all the helpful replies and info. I am going to try the d'Brake set up and see how it works out. Will post feedback.
            Cheers
            Felix
            The wheel is come full circle, I am here.

            Comment


            • #7
              Hello Again
              I checked how a d'Brake lines up with my triton and the holes are way off and it looks like it would need quite a bit of filing to get them to line up properly, and even then I don't think I'd trust it to last long.

              I will go with a UCM (hopefully V2 so I can use a 160mm disk)...

              This then got me thinking about Spirits and disk clearance with the angled triton frame legs. They are not dead straight up from the bearing holders like the normal Tritons or KHs. Does the disk clear the frame when using Spirits? I have seen a Triple with Sinz and MountainUni rotors, but don't seem to recall a Spirit set up.

              When I get a chance I will take the crank with rotor off my KH36 and test to see the clearance I get in the Triton Triple. I hope it won't be as tight as I think it could be.

              Maybe it's something to do with the what seems to be a shorter axle on the Nimbus 32h as it has a 6mm spacer when it should be an 8mm - when I put an 8mm the axle left sticking out for the crank itself looked way to short so I used a 6mm and that fits perfectly. Now curious if other users of the Nimbus 32h ISIS hub have come across the same thing? And could this make fitting Spirits problematic / impossible clearance wise?

              Thanks a lot in advance
              Felix
              Last edited by mindbalance; 2015-01-24, 08:57 PM.
              The wheel is come full circle, I am here.

              Comment


              • #8
                Originally posted by mindbalance View Post
                This then got me thinking about Spirits and disk clearance with the angled triton frame legs. They are not dead straight up from the bearing holders like the normal Tritons or KHs. Does the disk clear the frame when using Spirits? I have seen a Triple with Sinz and MountainUni rotors, but don't seem to recall a Spirit set up.
                I haven't seen a Triton fram IRL but I have seen Sinz & Spirit cranks. Both have the disk mount set back compared to the inner edge of the crank. And even if the Sinz has a slightly more important setback, the MountainUni rotor is a 180mm. Going for a 160mm rotor & Spirit sound safe. And if you already have some to test, you're golden
                => CrMo 29: KH XC rim, Nimbus CrMo hub, Spirit 110/137 & Schwalbe Big One
                => Flansberrium 26: Nextie rim, JumboJim 4.0, Spirit 127/150mm, M4O ISIS

                Comment


                • #9
                  Originally posted by mindbalance View Post
                  Hello Again
                  I checked how a d'Brake lines up with my triton and the holes are way off and it looks like it would need quite a bit of filing to get them to line up properly, and even then I don't think I'd trust it to last long.

                  I will go with a UCM (hopefully V2 so I can use a 160mm disk)...

                  This then got me thinking about Spirits and disk clearance with the angled triton frame legs. They are not dead straight up from the bearing holders like the normal Tritons or KHs. Does the disk clear the frame when using Spirits? I have seen a Triple with Sinz and MountainUni rotors, but don't seem to recall a Spirit set up.

                  When I get a chance I will take the crank with rotor off my KH36 and test to see the clearance I get in the Triton Triple. I hope it won't be as tight as I think it could be.

                  Maybe it's something to do with the what seems to be a shorter axle on the Nimbus 32h as it has a 6mm spacer when it should be an 8mm - when I put an 8mm the axle left sticking out for the crank itself looked way to short so I used a 6mm and that fits perfectly. Now curious if other users of the Nimbus 32h ISIS hub have come across the same thing? And could this make fitting Spirits problematic / impossible clearance wise?

                  Thanks a lot in advance
                  Felix
                  Your Triton is may be an old one priour to the modification of holes I required in 2010
                  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


                  • #10
                    @Sidd - Thanks for your input - yes I will just try it out myself, but wanted to see if someone knew of any problems I might run into... Cheers

                    @bouin - How can I tell what version of the triple I have is? And regarding holes, do you mean on the D'Brake/UCM - they they need some modification, or is there something "wrong" with the older frames that was later corrected? Thanks a lot

                    Felix
                    Last edited by mindbalance; 2015-01-25, 10:15 AM.
                    The wheel is come full circle, I am here.

                    Comment


                    • #11
                      Originally posted by mindbalance View Post
                      @Sidd - Thanks for your input - yes I will just try it out myself, but wanted to see if someone knew of any problems I might run into... Cheers

                      @bouin - How can I tell what version of the triple I have is? And regarding holes, do you mean on the D'Brake/UCM - they they need some modification, or is there something "wrong" with the older frames that was later corrected? Thanks a lot

                      Felix
                      Older Triton had the holes in the middle of bearing cap and not in the axis of the bearing, Macduni had this issue. Can you put a close photo of your frame ?
                      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


                      • #12
                        Photos regarding disk clearance on Triple.
                        It just about clears the frame when crank is mounted with a 6mm spacer. I get around 2mm. If I were to use a 180mm rotor in stead of the 160mm I believe the disk would rub on the frame. It could all be solved with an 8mm spacer moving the crank out a bit more, but when I put one on the remaining axle looked way to short.
                        -- Am I right in thinking there should be enough axle to go all the way into the crank splines (up to the space were the threads start for the removal bolt)?

                        @bouin - thanks a lot, yes I will take out my wheel later this week (away now with work) and get a close up pic of the bearing mounts. Curious about this...
                        Maybe Maguras would be the simplest way to go, but I would like to get a disk option working with this lovely frame and LM wheel

                        Cheers
                        Felix
                        Attached Files
                        The wheel is come full circle, I am here.

                        Comment


                        • #13
                          .
                          Attached Files
                          The wheel is come full circle, I am here.

                          Comment


                          • #14
                            Triton Triple Bearings

                            @bouin-bouin

                            Here is a close up of the bearing cups. I suspect I do have the off centre version of the frame. I can see that the bearings are not in line with the bolt holes of the frame.

                            What are the downsides of this set up? Apart from problems with disk brake set ups using UCM or d'Brake. Are the bearings under more stress seeing as the frame isn't centred above them? Does this arrangement mean a weaker set up overall?

                            I am curious what the thinking was behind this to make things this way...

                            Thanks a lot
                            Felix
                            Attached Files
                            Last edited by mindbalance; 2015-01-30, 04:03 PM.
                            The wheel is come full circle, I am here.

                            Comment


                            • #15
                              It'is better to have the bearing in line with bolts for bearing stress but not an issue with Triton frame as bearing holders are machined with precision. Your frame is corresponding to original design, Macduni attapted a Dbrake on such frame but not easily
                              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

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