ROS 9 Plus BB drop- Mtbr.com
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  1. #1
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    Reputation: pbasinger's Avatar
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    ROS 9 Plus BB drop

    Hey

    I was wondering if anyone can confirm what the bb drop is on the ROS 9 Plus?

    I was thinking about purchasing one from Jenson where they listed the bb drop at 56 mm, but then noticed it was listed at 71 mm (with rigid fork) on the Niner site. I'm thinking the Jenson info is just wrong. Can anyone confirm this?

    Or, does anyone have any bb height information from their own ROS? What tires / rims and where is the ecentric bb set?

    Thanks

    Pete

    ROS 9 Plus


    Niner Ros 9 Plus 2 Star SLX Bike > Bikes > Mountain Bikes | Jenson USA

  2. #2
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    Quote Originally Posted by pbasinger View Post
    Hey

    I was wondering if anyone can confirm what the bb drop is on the ROS 9 Plus?

    I was thinking about purchasing one from Jenson where they listed the bb drop at 56 mm, but then noticed it was listed at 71 mm (with rigid fork) on the Niner site. I'm thinking the Jenson info is just wrong. Can anyone confirm this?

    Or, does anyone have any bb height information from their own ROS? What tires / rims and where is the ecentric bb set?

    Thanks

    Pete

    ROS 9 Plus



    Niner Ros 9 Plus 2 Star SLX Bike > Bikes > Mountain Bikes | Jenson USA
    56mm is ROS9 BB drop, 71mm is ROS9plus BB drop IIRC, I have both and run my EBBs pretty much in the 11-1 o'clock orientation. So effective crank centerline is probably 1/4-1/2" or so higher(never measured the EBB offcenter). Also have Mag Pro fork on ROS9+ so 63mm according to that chart.

    EDIT: Yeah ROS9 stuff was still there at Niner ROS 9

    EDIT2: If you're running a true 29+ tire like DHF/DHR then you get back about 1/2" over a similar 29 version. Dirt Wizards are short in comparison although 3" wide, still a larger diameter though.
    Canfield R1OT SS
    ROS9+ SS
    ROS9 SS

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