2018 N9 Geo/reach Question- Mtbr.com
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  1. #1
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    2018 N9 Geo/reach Question

    I just switched from a large size 2013 to a XL 2018 N9.

    I did not change any component except my handlebar stem. The old frame had a 90mm stem. Admittedly, it's kind of an XC setup. That's another reason for the switch to XL: less XC, longer, slacker, blah blah blah...

    L 2013 ETT = 609mm
    XL 2018 ETT = 650mm

    Swap in a 45mm stem for a 90mm stem and I should be pretty close to where I was, right?

    Wrong.

    The distance from the back of the saddle to the bar clamp was 34".
    The new setup was 33". That means I should have bought a 70mm stem.

    How did this happen? I obviously overlooked something.

    Possibly because the seat post is not extended as far on the XL frame? I doesn't seem like that is the case, but maybe the top tube is a tad lower on the '18.

    This question may never be answered since I didn't measure the saddle position relative to the BB on the 2013. ...and my eyeball on these pix isn't telling me much. Pedaling seems to be normal.

    I also took out a 5mm spacer from under the stem to account for the 5mm longer headtube, but the bars felt too far below the saddle so I put it back. Fuzzy math?

    2013
    2018 N9 Geo/reach Question-2013n9.jpg

    2018
    2018 N9 Geo/reach Question-2018n9.jpg

    Thanks,
    -F
    It's never easier - you just go faster.

  2. #2
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    The missing component is that the actual seat tube angle went from 70.9 on the 2013 to 72.8 on the 2018. So at a given saddle height, your seat will be a bit further forward on the 2018 vs. the 2013.

  3. #3
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    Quote Originally Posted by coleam View Post
    The missing component is that the actual seat tube angle went from 70.9 on the 2013 to 72.8 on the 2018. So at a given saddle height, your seat will be a bit further forward on the 2018 vs. the 2013.
    That's probably it. The actual, not the effective. As the saddle is raised, it goes back farther on the 2013.
    Adding a dropper will probably not help, either, unless I want to spring for a set-back dropper.

    Thanks.

    -F
    It's never easier - you just go faster.

  4. #4
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    Quote Originally Posted by Fleas View Post
    That's probably it. The actual, not the effective. As the saddle is raised, it goes back farther on the 2013.
    Adding a dropper will probably not help, either, unless I want to spring for a set-back dropper.

    Thanks.

    -F
    Yeah, a dropper won't make a difference. There aren't that many setback droppers, and none of them have enough setback to make a difference. Looks like you already have 15-20mm of setback with your current post, and I don't know of any droppers with more than 25. Also looks like your saddle is slid all the way back already. I would say try riding with the current setup for a bit, and if it's too uncomfortable, try the longer stem.

    Sent from my SM-G950U using Tapatalk

  5. #5
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    Well I did get the dropper and the 70mm stem and it got me out to 33-1/2" so I rode it many miles this past weekend. The '18 frame has that real steel feel, as opposed to the '13 which felt like a stiff DJ frame. It was nice! And the slacker head angle saved me at least once for sure.
    I think the BB is just a tad lower - could be as much as 3/8" - but not at risk of pedal strikes unless I am just careless.
    I still kinda want that last 1/2" of reach back, so maybe an 80mm stem is in my future.

    -F
    It's never easier - you just go faster.

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