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  1. #1
    dazed and confused newkie's Avatar
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    Rear rack w/ disc brakes

    Hi again, what's the difference between regular pannier racks and those that specify disc brakes? Are they wider? Is it the way they mount?

    I'm not seeing a lot of options for disc brake compatible racks. For example, on CRC there are 40 racks which don't mention disc brakes and only 3 that do.

    Are my choices really that limited?

  2. #2
    Senior Member alan s's Avatar
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    I use the Topeak Explorer disc-compatible rack, which works well with the Topeak slide on trunk bags.

  3. #3
    tsl
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    A lot of it depends on where your caliper is mounted. If the caliper is inside the rear triangle, any rack will do. This location is becoming more common.

    In any event, that's where my caliper is so I didn't need a special rack and I don't know exactly what makes them special.
    My two favorite things in life are libraries and bicycles. They both move people forward without wasting anything.
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    Lucky for me, I work at a library and bike to work.

  4. #4
    Senior Member alan s's Avatar
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    Quote Originally Posted by tsl View Post
    A lot of it depends on where your caliper is mounted. If the caliper is inside the rear triangle, any rack will do. This location is becoming more common.

    In any event, that's where my caliper is so I didn't need a special rack and I don't know exactly what makes them special.
    Rather than the rack going straight to the dropout, the rack is designed to clear a caliper mounted on the back of the seatstay. Kind of an L-shaped mount, rather than straight. This pushes the rack stays outboard, without which you would have to come up with a DIY installation.

  5. #5
    Older than dirt CCrew's Avatar
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    Quote Originally Posted by alan s View Post
    Rather than the rack going straight to the dropout, the rack is designed to clear a caliper mounted on the back of the seatstay. Kind of an L-shaped mount, rather than straight. This pushes the rack stays outboard, without which you would have to come up with a DIY installation.
    Yup. Think of it as a regular rack, but where it mounts to the stay there's about 3/4 inch or so standoff to clear the caliper. You could easily use a regular rack spread with a stack of washers on each side, but the disc specific ones just look neater. I have one of the same racks alan s does.

  6. #6
    dazed and confused newkie's Avatar
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    Quote Originally Posted by CCrew View Post
    Think of it as a regular rack, but where it mounts to the stay there's about 3/4 inch or so standoff to clear the caliper.
    Does anyone have a closeup pic of this?

  7. #7
    Senior Member shouldberiding's Avatar
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    EDIT: Recalled incorrectly.

    A quick Google search turned up a bunch of results under "disc compatible rack."

  8. #8
    Papaya King waynesworld's Avatar
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    Quote Originally Posted by rumrunn6 View Post
    walk right in and punch the first guy you meet in the head
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  9. #9
    coprolite fietsbob's Avatar
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    Does anyone have a closeup pic of this?
    from a sellers site: htthttp://www.calhouncycle.com/produ...oduct=1327p://
    see detail #2

    the stand off itself is a pretty basic machine shop project.
    Last edited by fietsbob; 01-19-11 at 12:48 PM.

  10. #10
    Senior Member canyoneagle's Avatar
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    Quote Originally Posted by fietsbob View Post
    from a sellers site: htthttp://www.calhouncycle.com/produ...oduct=1327p://
    see detail #2

    the stand off itself is a pretty basic machine shop project.
    I'm using a standard rack that I (carefully) bent to the correct configuration, and I used a simple hardware store coupling nut [IMG]file:///C:/DOCUME%7E1/P23368/LOCALS%7E1/Temp/moz-screenshot-2.png[/IMG] to get the needed offset.[IMG]file:///C:/DOCUME%7E1/P23368/LOCALS%7E1/Temp/moz-screenshot.png[/IMG][IMG]file:///C:/DOCUME%7E1/P23368/LOCALS%7E1/Temp/moz-screenshot-1.png[/IMG] I've since replaced the coupling nut with one of the spacers that comes as standard hardware with PB cascadia fenders.
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  11. #11
    Grizzled Curmudgeon keithm0's Avatar
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    I have the Old Man Mountain "Cold Springs" rear rack on my disc-equipped Specialized Stumpjumper hard tail. See http://oldmanmountain.com/Pages/Rack...ar_gallery.htm for photos. In the top photo you can clearly see the stand-off on the mount. This requires an extra long rear skewer, but seems to work well. I've had mine for about 3 years with zero problems.

  12. #12
    dazed and confused newkie's Avatar
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    Thanks for the details. I went to the LBS yesterday where they have the non-disc brake Topeak SuperTourist and held it up to a couple of bikes with disc brakes. Now re-reading this thread it all makes sense.

    I'm not sure how common it is to have the caliper mounted inside the rear triangle. It appeared all the disc equipped bikes at this shop would need a disc specific version rack. However, I did get an email from Cube which said,

    "The Mounting points are on the outside of the frame and the disc brake is on the inner side."

    So it looks like I might be able to use any rack afterall.
    Last edited by newkie; 01-24-11 at 05:56 AM. Reason: new info

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