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  1. #1
    underachiever
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    Syncros Revolution Bottom Bracket Sizing

    I have an NOS Syncros Revolution crankset and am looking for the correct bottom bracket size (for a 68mm shell). I've done some searching and have come across anything from 109mm (from the 1994 catalog) to 117.5 (BikePro), and one occurrence of 122mm (retrobike). Anyway, the serial number is stamped 175 17840 if that helps.

    Here are some photos:

    Attachment 450738

    Attachment 450739

    Attachment 450740

    Attachment 450741

    Attachment 450742

    Attachment 450743
    Last edited by misterdangerpants; 12-23-2011 at 04:57 AM.

  2. #2
    VRC Illuminati
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    I ran my Rev's with a 110 on several bikes with no issues.





    -eric-

    http://www.rumpfy.com

    Wanted: Syncros 27.2 x 425 seatpost, 26.8 x 400 IRD seatpost

  3. #3
    underachiever
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    Quote Originally Posted by Rumpfy
    I ran my Rev's with a 110 on several bikes with no issues.
    Thanks a bunch. I was actually going to ping you as I saw you had a few sets (listed in an old thread) when I searched this site, but you got to me before I had a chance.

  4. #4
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    Quote Originally Posted by misterdangerpants
    Thanks a bunch. I was actually going to ping you as I saw you had a few sets (listed in an old thread) when I searched this site, but you got to me before I had a chance.
    No prob. Contrary to popular belief, I am on the rare...actually helpful.

    110 World Class Ti on the Slinger, UN-90 on the GT. Fat was running the press fit...might have been wider.
    -eric-

    http://www.rumpfy.com

    Wanted: Syncros 27.2 x 425 seatpost, 26.8 x 400 IRD seatpost

  5. #5
    artistic...
    Reputation: colker1's Avatar
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    Quote Originally Posted by Rumpfy
    No prob. Contrary to popular belief, I am on the rare...actually helpful.

    110 World Class Ti on the Slinger, UN-90 on the GT. Fat was running the press fit...might have been wider.

    what's the difference in the real world b/ween a UN90 and the UN7x?
    want: Ibis ti handlebar. suntour 31.8 front derr. bottom pull

  6. #6
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    UN70 had the non drive "cup" was made of plastic also the seals didn't hold up as well which led to the demise of the bearings.IIRC. BTW how did the marathon go for you MD?

  7. #7
    underachiever
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    Quote Originally Posted by chefmiguel
    BTW how did the marathon go for you MD?


    Attachment 450797
    Last edited by misterdangerpants; 12-23-2011 at 04:57 AM.

  8. #8
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    Quote Originally Posted by colker1
    what's the difference in the real world b/ween a UN90 and the UN7x?

    I'd say about 20.
    -eric-

    http://www.rumpfy.com

    Wanted: Syncros 27.2 x 425 seatpost, 26.8 x 400 IRD seatpost

  9. #9
    artistic...
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    Quote Originally Posted by Rumpfy
    I'd say about 20.
    ha

    ha


    ha
    want: Ibis ti handlebar. suntour 31.8 front derr. bottom pull

  10. #10
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    the manual for the syncros revolution cranks reads the following:
    Road: 109mm bb (i.e. 130 bcd with 2 chainrings)
    Mtn: 117mm bb (i.e. 58/94 or 74/110 bcd with 3 chainrings)

  11. #11
    'Calm Down'
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    Nothing to add.

    jw

    Quote Originally Posted by Inigo Montoya
    You killed my father. Prepare to die.
    -

    "And single-speeding 29ers are mountain biking's equivalent of Scientologists..." - Captain Dondo

  12. #12
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    Quote Originally Posted by Inigo Montoya
    the manual for the syncros revolution cranks reads the following:
    Road: 109mm bb (i.e. 130 bcd with 2 chainrings)
    Mtn: 117mm bb (i.e. 58/94 or 74/110 bcd with 3 chainrings)
    Is there a version of that manual?
    Last edited by misterdangerpants; 05-14-2009 at 07:12 PM.

  13. #13
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    i have pdfs of the manuals for some syncros products (revos, aluminum cranks, crank-o-matic asf.). will try to get them up somewhere and post the link.

  14. #14
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    they are available at retrobike.co.uk now. see:
    Synrcos Manuals

  15. #15
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    I would like a set of those. That is all.

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