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  • Nimbus 36" frame question

    Would it be possible to mount a caliper brake through the crown of the Nimbus 36" frame (as seen with a standard frame in Uni Mag Issue 1)? I can't tell from the picture if there's enough room below that back tubing. link
    Last edited by boo radley; 2007-02-22, 07:36 AM.
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  • #2
    i would love to run one too because i'm too cheap to get a magura.
    maker of the happy birthday threads
    _________
    Just put the new uni together in the driveway stopped to move the car and ran over the uni.
    Felt like putting my head under the tire.
    - JustOneWheel

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    • #3
      You certainly couldn't get one behind the frame, you might be able to mount one on the front of the frame if you drill the hole really low so the bolt doesn't interfere with the rear bracing.
      Dave

      - what a thoroughly post-modern subversion of the cycling genre -

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      • #4
        I think it is, cause i'm doing it soon to my coker.
        I am one weird and unusual Greek Cypriot Australian with a pienormous heart.

        Can't wait till this game is finally released.

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        • #5
          Doesn't look so judging from the picture at least, perhaps on the front (as someone already pointed out).

          May i ask why - because you want a drag brake?

          In that case wouldn't V-brake + Magura to V converter (from a trials shop) + "normal dragbrake setup with shifter" work? (Of course this would cost a bit more, but on the positive side, you don't have to put a drill to your new frame!)

          I don't know if there is a big ratio difference from road/bmx brake to a V-brake, that could cause problems (or perhaps it would be even better) though.

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          • #6
            i think UDC sells some brake adapters
            http://www.unicycle.co.uk/shop/shopd...?catalogid=909

            isnt that wat u are looking for?


            i'm not sure how these things work... but might be it :P
            I'm a soldja.

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            • #7
              Originally posted by boo radley
              Would it be possible to mount a caliper brake through the crown of the Nimbus 36" frame (as seen with a standard frame in Uni Mag Issue 1)? I can't tell from the picture if there's enough room below that back tubing. link
              Sadly, No.

              That was one of the first things I looked at when I got mine. I bought a BMX style caliper brake from eBay after reading the article you're refering to, with the intention of fitting it to my 29er. It was only when it arrive that I realised it was a back brake, and the bolt wasn't long enough for the thicker tube at the crown of my 29.

              So, looking at the rear brace of the new Nimbus, I thought it would work a treat. Sadly though, the distance between the brace and the wheel rim is about 1/2 - 3/4" too far.

              As Kington99 says, it should work on the bottom of the main tube though (if it's a front brake not a rear one!), but I think the mechanism would have to go at the front rather than the rear.

              I'm keeping my eyes open for cheap Maguars on eBay now though :-)

              STM

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              • #8
                A few interesting things to note for purposes of a caliper brake install.

                First, the main (seat) tube on that frame is an external butt, with much greater wall thickness than the higher section of the tube. Thus drilling a fore/aft hole in the lower section to mount a caliper brake will not weaken the tube.

                Second, Roger has apparently positioned the main (seat) tube such that the legs (downtubes) are welded to it at a more forward point on the sides of the tube. So indeed there is more room at the back of this tube for caliper style brake shoes to not hit the downtubes.

                Third, make sure the width of a caliper brake and its cable stop will not interfere with your legs while pedalling. Otherwise, this frame looks very useful for a caliper style brake.

                Fourth, on all my rim brakes, I grind off about half of the brake shoe area, thus making the brake shoes less effective and grabby on the rim.
                Pete

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                • #9
                  I don't want Maguras or anything too complicated/expensive because I hardly ever use the brake anway. Here's a couple pictures of what I've got now. I'm hoping to replicate it on the Nimbus frame. It's an Odyssey 1999 BMX brake drilled through the seat tube. It came with 2 bolts, one short and one long. I think I'm using the longer one. The brake pads are not too grabby at all, which is nice. I'm thinking it will work if I mount it on the front of the frame as suggested.



                  Last edited by boo radley; 2007-02-23, 06:11 AM.
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                  • #10
                    Originally posted by boo radley
                    I don't want Maguras or anything too complicated/expensive because I hardly ever use the brake anway.
                    To be honest, bearing in mind the magura mounts are already in place, maguras are probably simpler to fit than anything else. The set I have on my nimbus 36 i got for 10.50 on ebay, and I spent another 8 on new pads and a tpi dial. The set on my muni i got got for 22 on ebay and were usable straight out the box. There are currently sets on ebay starting at 1.
                    Last edited by kington99; 2007-02-23, 08:55 AM.
                    Dave

                    - what a thoroughly post-modern subversion of the cycling genre -

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                    • #11
                      Originally posted by kington99
                      To be honest, bearing in mind the magura mounts are already in place, maguras are probably simpler to fit than anything else. The set I have on my nimbus 36 i got for 10.50 on ebay, and I spent another 8 on new pads and a tpi dial. The set on my muni i got got for 22 on ebay and were usable straight out the box. There are currently sets on ebay starting at 1.
                      Have you got a link? Every time I've checked eBay all the stuff due to finish in the next day or two is at least 40.

                      (Yes, I know it seems I'm being lazy not looking now, but I can't use eBay whilst at work, so will have a look tonight as well)

                      STM

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                      • #12
                        Originally posted by semach.the.monkey
                        Have you got a link? Every time I've checked eBay all the stuff due to finish in the next day or two is at least 40.

                        (Yes, I know it seems I'm being lazy not looking now, but I can't use eBay whilst at work, so will have a look tonight as well)

                        STM
                        Here goes:

                        1
                        2
                        3
                        4
                        Dave

                        - what a thoroughly post-modern subversion of the cycling genre -

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                        • #13
                          Originally posted by kington99
                          Here goes:

                          1
                          2
                          3
                          4
                          Thanks. I'll have a butchers when I get home tonight.

                          STM

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                          • #14
                            Originally posted by boo radley
                            I don't want Maguras or anything too complicated/expensive because I hardly ever use the brake anway. Here's a couple pictures of what I've got now. I'm hoping to replicate it on the Nimbus frame. It's an Odyssey 1999 BMX brake drilled through the seat tube. It came with 2 bolts, one short and one long. I think I'm using the longer one. The brake pads are not too grabby at all, which is nice. I'm thinking it will work if I mount it on the front of the frame as suggested.



                            Would you say there's enough clearence for the brake to be used on a 24 x 2.6 tire? Also, could you take a picture of how you set up the brake lever?

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                            • #15
                              Originally posted by zfreak220
                              Would you say there's enough clearence for the brake to be used on a 24 x 2.6 tire? Also, could you take a picture of how you set up the brake lever?
                              Not sure. It would be a tight fit if it did. The pads are far enough apart for pretty much any rim (the tire can be deflated to pass between the pads), but the knobs of your tire might rub the lower part of the brake arms. I did a quick test on my 2.5" trials tire and it seemed pretty close to the limit. The brake lever is mounted to the left handle of my T7. Others have recently posted pictures of that setup... mine looks the same.
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