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  1. #1
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    On-one 456 carbon

    Any of you hooligans riding this as a 650b? Looking for a frame to set up with all my parts from my current SS (Jamis Dakota elite converted to 27.5). Problem with the Jamis is I don't like the XC geo, which combined with the now 13" bb height leads to a twitchy descender even with a 120mm xfusion. Tire space is also limited out back to 2.1 and even that is tight, and as a single speed it's not optimal (though magic gear 32:19 has worked great).

    Want SS capability, slacker angles, BB not sky high, and plenty of clearance for the biggest tire I can find. Kona Explosif would have been a perfect choice but frames appear to be nonexistent. LBS checked computer and said no go.

    Thoughts/experiences on 456?

  2. #2
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  3. #3
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    If you still want to consider steel then you might want to look at the Soma B side. The geo given is with a 80 mm 650b fork but I am using a 100mm 29er fork which slackens the geo to just where I like it. They are readily available.

  4. #4
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    Thanks Sti--good info there and nice bike. Plenty of room in back for a 2.35/2.4?

    @LowOnO2--steel is fine, just trying to get a more trail playful geo and at the same time re-use as many parts as possible...especially expensive bits like the fork, the xfusion I have works great...

  5. #5
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    I agree on your assessment of slacker is more fun. The geo of the Soma B is 71 HTA and 73 STA with an a2c of only 453. However, the 490 mm a2c (with sag) of my fork makes the ride very playful with the trail geo.

    Your 120 mm fork that has been modded for 650b should have a similar a2c.

    EDIT: I just ran the numbers and 490 a2c changes the geo to 69.12 HTA and 71.12 STA.

  6. #6
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    Hmmm, good point O2... Xfusion site says the a2c of the enix I have is 499 @120mm. So I'd be 69ish HTA on the b-side... Room in back is good I assume? Been riding my fatbike a lot and 2.25 looks like tour de france cookie cutters to me now, would be looking to get all the cush and traction possible out of it. Being steel and about 4.5lbs I'm assuming the B-side is pretty smooth ride?

  7. #7
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    It's my first steel frame so I can't compare to others steel. It's amazing compared to Al.

    I am currently running neo-moto 2.3 in the back and there is plenty of room. The sliding dropouts work like a charm.

  8. #8
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    Further research says the Jamis has exactly the same 71/73 geo. So maybe it's the cranked up bb I don't like? Maybe I've been riding the fat bike so much I just can't deal with normal tires anymore? Have to think about it some more. Thanks for the feedback!

  9. #9
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    Quote Originally Posted by montana_ben View Post
    Thanks Sti--good info there and nice bike. Plenty of room in back for a 2.35/2.4?
    Plenty of space. You could probably squeeze a skinny 29" wheel there.

  10. #10
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    Does the B Side have sliders? I cant remember. I almost bought one but got a Pipedream Sirius from the UK instead. The Pipedream will give you the SS capability.
    2013 Rocky Mountain Vertex 990 RSL
    2013 Rocky Mountain Altitude 730
    2013 Pipedream Sirius R853 - 650b

  11. #11
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    @Zerort, yes, the B Side has sliders. It also has a derailleur hanger to run gears.

  12. #12
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    Nice. Now that I think about it I went with the Pipedream because I could get it in different colors.
    2013 Rocky Mountain Vertex 990 RSL
    2013 Rocky Mountain Altitude 730
    2013 Pipedream Sirius R853 - 650b

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