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  1. #1
    a lazy pedaler
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    New question here. Which frame to double as a 29er?

    Ok guys, "a friend of mine" is thinking about this...a lot!

    "he" has this premises:
    - No Ti.
    - No Custom.
    - Since "he" will probably ride this bike in 29er mode a lot, he would like to, eventually, add a 29er front suspension setup. Here is where I think the geo of the bike will play its important part. "he" as I, don't know much about 29ers geos.

    Obviously he can't afford two bikes, so that is not an option.

    So...which one Fatback? 170mm 907? Mukluk? an On-One?

    "we" would like to hear the experience from double Fat&29er setup riders!

    Thanks!

  2. #2
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    Pick out which 29er suspension fork you would want to run, and then compare it's axle-to-crown and offset measurements (taking sag into account) with the forks that the various fat frames are designed around:

    Fatback fork: 460 mm (I don't have the offset dimension)
    Enabler: 468 mm, 45 mm offset
    907 (Pugsley fork): 447 mm, 43 mm offset

    I don't know if the 2012 Fatback and 907 frames hold to those dimensions- those numbers are for the current production (2011) frames.

  3. #3
    a lazy pedaler
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    Numbers...

    ...and analogies (that's as far as my bicycle engineering will go )

    Salsa's El Mar is made for Front Suspension 100mm or 80 mm and it comes (or came) with a 468 a-c and 45 mm rake rigid fork (cromoto 29er or enabler)

    In their completes they put the frame with a Rock Shox Reba which is 46 mm rake and 506 a-c in 100mm mode and 486 a-c in 80mm mode.

    They said a 29er 80mm at 20% sag is equivalent to the cromoto (which is, at least for the reba)

    So, Mukluk will be fine with a similar fork.

    Fatbacks (their site has been down for the last 10 hours at least btw) may work with a similar fork at 80mm mode if its designed for a similar rake.

    Seems like 2011 907s are just out of the equation. It would be nice if they designed the 2012s around the 468 mm a-c's.

    Fatbacks 2012?

  4. #4
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    Regardless of all the techno mumbo-gumbu above, the newest Fatback is supposed to have a tapered headset which should make it stronger
    If Huffy made an airplane, would you fly in it?

  5. #5
    aka bOb
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    I tried a Fatback 468mm c-r fork on my 2011 907 and it was just Ok. Now I have a 460mm Fatback fork on it and it is much better. I wish Fatback made a 447mm so I could try that out. (really like the look of the Fatback forks)

  6. #6
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    May not need 29er wheels if the Floyd Tyres do the job.
    As little bike as possible, as silent as possible.
    Latitude: 5736' Highlands, Scotland

  7. #7
    aka bOb
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    Hey VB what fork are you running on your 907?

  8. #8
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    Quote Originally Posted by bdundee View Post
    Hey VB what fork are you running on your 907?
    At the moment - Surly 100mm OLD so I can use a drum brake.
    As little bike as possible, as silent as possible.
    Latitude: 5736' Highlands, Scotland

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