• Does anyone run this configuration, and are there ensuing problems with chain adjustment in conjunction with fore-and-aft positioning of caliper mountings with the brake disc being so mobile?
    I had thought of attempting this set-up, but can see about a dozen ways for it to go breasts elevated

  • I did it once, a few years ago.

    with an azonic steelhead, works ok, you just have to make sure your optimum position for the disc caliper works with your gear combo and chain tension

  • RPM I did it once, a few years ago.

    with an azonic steelhead, works ok, you just have to make sure your optimum position for the disc caliper works with your gear combo and chain tension

    aka pain in the arse

  • sounds a right faff. i use an EBB

  • I was going to fit the disc mount myself, but maybe I'll just go with the v-brakes. Incedentally, Does anyone have a link to a tech drawing of where an IS disc mount attaches to the frame as regards bolt circle diameters and hub spacing, please.

  • I run a discs on my Surly 1x1 which has horizontal rear mounting drop outs. It is a little bit of a faff in terms of every time I take the wheel out I have to slacken off the nuts on the disc caliper and to moveit out of the way of the disc as the wheel is pulled out, but this is only seconds of work each time. I first went with a Surly Tug Nut chain tug as I was told I would only need one, but I had a few problems when I grabbed a big handful of brake I tended to pull the wheel out of alignment. Since then I have added another chain tug on the other side to guard against this. It is by no means ideal, but it works and is'nt really to much of an issue.

  • Take a look at on ones inbread frame for ideas.

  • what do you want a disc on the back for anyway?
    you can lock the wheel up perfectly fine with a v. or if you really want more power, get some of those magura hydraulic rim brakes (pricey tho).

  • The cotic roadrat runs that config.

    http://www.cotic.co.uk/roadrat/

  • sliding dropouts are the way forward IMHO if you want discs and single speed:

    http://www.paragonmachineworks.com/

    My Voodoo mountain bike has a very similar setup for running a geared hub.

    or an EBB can be very effective too.

  • I'd second the v-brake option. Use an XTR if possible as they have so much power.
    But then it's the setup I run so I would say that.

  • mister k what do you want a disc on the back for anyway?
    you can lock the wheel up perfectly fine with a v. or if you really want more power, get some of those magura hydraulic rim brakes (pricey tho).

    Magura Hydrolic rim brakes!!! It ain't 1995 you know....

  • Good for trials though, when you don't actually need modulation.

  • BillB sliding dropouts are the way forward IMHO if you want discs and single speed:

    http://www.paragonmachineworks.com/

    My Voodoo mountain bike has a very similar setup for running a geared hub.

    or an EBB can be very effective too.

    was talking about this in the bike porn thread, thanks for reminding me what they are.

  • hippy Good for trials though, when you don't actually need modulation.

    yeah. that's what i was thinking of.
    used to have a little bash at trials and thats what all the kids use as you can't run a rear disc on a trials bike without ripping the frame apart.
    they look pretty sweet as well!
    tbh, avid v's are almost as good.

  • I saw a guy on Uxbridge Rd. tonight.. I glanced left and saw this bike in the air and I'm like "what the fscking hell?!".. then I realised the dude had just like j-hopped up a wall.. he was hopping on the back wheel as I rode along..
    Don't see much in the way of trials here, which is a bit odd coz I remember studying loads of trials videos from guys riding in the UK.. they must've all been country boys or something?

  • i've seen some trails riders in london, but i doubt that they ride those bikes every day, just get them out to play.

  • Trials gearing is stupid low and useless for riding any distance on, so yeah they won't ride around much.

  • i saw that guy on the trials bike earlier, jumping onto the railing, at the flats near mine.

  • yeah. there's no chance of commuting on a trials bike. a proper trials frame won't even have a saddle, and the stem is about 3 feet long!

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Freewheel, Horizontal Rear-facing Drop-outs and Rear Disc Brake

Posted by Avatar for Bobfix @Bobfix

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