Brake Rotors - Manufacturers Recommendation

Broonster
Broonster Posts: 440
edited October 2008 in MTB workshop & tech
When a manufacturer "recommends" that you shouldn't use a 203mm brake rotor on their forks, do you think they mean it?! :lol:

Or is it likely that they're saying "Well, it will work but we can't guarantee your safety" kinda thing?!

I want to put a 203mm Avid rotor on my Juicy 3's, onto Rock Shox forks, to replace the current 185mm ones, but Rock Shox "don't recommend" using them. Just wondered how safe it actually was, before I go and spend some money?

Ta.
Winter: Moda Nocturne
Road: Cervelo R3
'Cross: Ridley X-Night
Commuter: Genesis Day One

Comments

  • nicklouse
    nicklouse Posts: 50,673
    what fork is it?

    Most RS are fine for 203 so if they say dont i would not.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Broonster
    Broonster Posts: 440
    nicklouse wrote:
    what fork is it?

    Most RS are fine for 203 so if they say dont i would not.

    It's the Tora 302 with 130mm travel.
    Winter: Moda Nocturne
    Road: Cervelo R3
    'Cross: Ridley X-Night
    Commuter: Genesis Day One
  • nicklouse
    nicklouse Posts: 50,673
    the Tora is good to 210mm
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Broonster
    Broonster Posts: 440
    nicklouse wrote:
    the Tora is good to 210mm

    That's good enough for me then, cheers.

    Actually, having re-read it, what it actually says is:

    "185mm and 203mm
    Avid’s larger rotor sizes (185mm and 203mm) are compatible with standard quick-release and Tullio forks but require a different caliper mounting bracket. Avid offers these brackets and they are available through your local bike shop

    Note:Fork manufacturers often discourage the use of anything larger than a 185mm rotor on a standard quick-release."

    So, it doesn't say don't do it. :D
    Winter: Moda Nocturne
    Road: Cervelo R3
    'Cross: Ridley X-Night
    Commuter: Genesis Day One
  • nicklouse
    nicklouse Posts: 50,673
    so where are you reading this?

    on Srams webby there is nothing about Qr's
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Broonster
    Broonster Posts: 440
    nicklouse wrote:
    so where are you reading this?

    on Srams webby there is nothing about Qr's

    Here:

    http://www.sram.com/_media/techdocs/dis ... compat.pdf

    Am I picking the info up wrong?
    Winter: Moda Nocturne
    Road: Cervelo R3
    'Cross: Ridley X-Night
    Commuter: Genesis Day One
  • nicklouse
    nicklouse Posts: 50,673
    Ok i see you are reading the disc makers info. If you look at the RS pages and look at the Tora (any) scroll down and all they say is
    Max. Recommended Rotor Size 210mm
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Broonster
    Broonster Posts: 440
    nicklouse wrote:
    Ok i see you are reading the disc makers info. If you look at the RS pages and look at the Tora (any) scroll down and all they say is
    Max. Recommended Rotor Size 210mm

    Ahhh, cool, thanks alot for your help.

    :D
    Winter: Moda Nocturne
    Road: Cervelo R3
    'Cross: Ridley X-Night
    Commuter: Genesis Day One
  • nicklouse
    nicklouse Posts: 50,673
    BUT if you do go 203 make sure you check the QR often and that you use an enclosed one like a shimano deore one as they are less prone to coming lose.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Broonster
    Broonster Posts: 440
    nicklouse wrote:
    BUT if you do go 203 make sure you check the QR often and that you use an enclosed one like a shimano deore one as they are less prone to coming lose.

    Will do, cheers.
    Winter: Moda Nocturne
    Road: Cervelo R3
    'Cross: Ridley X-Night
    Commuter: Genesis Day One