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  1. #1
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    Upgrading from V-Brakes to Mechanical Disc Brakes... Few Questions

    I want to upgrade the brakes on my bike from v-brakes to disc. The frame and fork already have the tabs for the brakes and it came with Avid SD brake levers, so I want to buy Avid BB7s. The current hubs (shimano XT) are not disc compatible, so from the research I made, I have two options: buy a new disc compatible wheelset or upgrade to new disc compatible hubs (which from the research I made, it was frowned upon due to the cost involved, since I could just buy a new wheelset with the same amount of money).

    I want to buy a new wheelset and came up upon a few deals online and one local buy, but I don't know which wheelset is compatible with my bike.

    My current bike is a GT XCR 2000 (I know its old, but it has been well maintained and the previous owner upgraded almost everything except the brakes). By looking at the pictures below, could someone give me some advice as far as what hubs and axles I have in order to be able to buy the correct one. I have no idea if the front hub is 9mm QR, 15mm, etc... or what size is the rear axle (135x10, QR, through axle, etc...)

    If anyone can tell by the pics, I will greatly appreciate it.
    Attached Thumbnails Attached Thumbnails Upgrading from V-Brakes to Mechanical Disc Brakes... Few Questions-front-1.jpg  

    Upgrading from V-Brakes to Mechanical Disc Brakes... Few Questions-front-2.jpg  

    Upgrading from V-Brakes to Mechanical Disc Brakes... Few Questions-front-3.jpg  

    Upgrading from V-Brakes to Mechanical Disc Brakes... Few Questions-rear-1.jpg  

    Upgrading from V-Brakes to Mechanical Disc Brakes... Few Questions-rear-2.jpg  

    Upgrading from V-Brakes to Mechanical Disc Brakes... Few Questions-rear-3.jpg  

    Upgrading from V-Brakes to Mechanical Disc Brakes... Few Questions-rear-4.jpg  

    Upgrading from V-Brakes to Mechanical Disc Brakes... Few Questions-rear-5.jpg  

    Upgrading from V-Brakes to Mechanical Disc Brakes... Few Questions-mtb-wheel.jpg  


  2. #2
    turtles make me hot
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    It looks like standard run of the mill 100mm up front and 135 out back. Standard quick release.
    I like turtles

  3. #3
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    What are the wheel sets you've found?

    If your rims are in good condition don't dismiss having your wheels rebuilt with disc compatible hubs. You might spend a little more, but having wheels hand-built by a good wheel builder will produce a notably better quality wheel for the price. The X517 rims were apparently good quality when they came out, but I really know nothing about them. Find a place locally (if one exists) who specialises in wheel building and ask them for advice.

  4. #4
    bikerbert
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    Mavic CrossRide wheels are a good entry level disc hub wheel.

    Sent from my RM-820_nam_att_100 using Tapatalk

  5. #5
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    Quote Originally Posted by jsilva View Post
    What are the wheel sets you've found?

    If your rims are in good condition don't dismiss having your wheels rebuilt with disc compatible hubs. You might spend a little more, but having wheels hand-built by a good wheel builder will produce a notably better quality wheel for the price. The X517 rims were apparently good quality when they came out, but I really know nothing about them. Find a place locally (if one exists) who specialises in wheel building and ask them for advice.
    I contemplated this, but when I did the math, the cost was higher and due to certain circumstances, I'm working with a small budget. I just want to ensure the wheels I'm looking at are the correct size. Thanks for the advise though.

  6. #6
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    Currently I'm looking locally at some Mavic CrossTrails, 9/10mm quick release dropout tabs, and some DT Swiss that I'm looking at at this week (model/specs unknown at this time). That's the reason I want to know which wheels will fit my bike so when I get the specs I'll know if they will fit.

  7. #7
    Trail Tire TV on blogger
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    Quote Originally Posted by RallyPunx View Post
    Currently I'm looking locally at some Mavic CrossTrails, 9/10mm quick release dropout tabs, and some DT Swiss that I'm looking at at this week (model/specs unknown at this time). That's the reason I want to know which wheels will fit my bike so when I get the specs I'll know if they will fit.
    pretty sure either will work..

    just for reference it looks like you have,
    Standard 26" wheels
    100mm front spaced hub (basic standard front)
    135mm rear spaced hub (basic standard rear)
    both are Quick Release.
    Going to try and bring Trail Tire TV back. go take a look... http://trailtiretv.blogspot.com/

  8. #8
    mtbr member
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    Quote Originally Posted by bikerbert View Post
    Mavic CrossRide wheels are a good entry level disc hub wheel.

    Sent from my RM-820_nam_att_100 using Tapatalk
    +1 awesome wheel for the price.

    Sent from my skz_tenderloin using Tapatalk 4

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