Do new rigid/singlespeed frames use old school geometry?- Mtbr.com
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  1. #1
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    Do new rigid/singlespeed frames use old school geometry?

    I was responding to another thread about rigid forks when this question occured to me.

    Back in the pre suspension days, frame geometry was very slack, and bikes were made of compliant steel. This helped enormously in allowing the frame to suspend the rider. After more than a decade of frame development centered around suspension, geometry has steepened, and new aluminum frames are stiff. Retrofitting a rigid fork onto an new frame is not the same a riding rigid on a frame designed from scratch for riding rigid.

    Are there any New Old School frames for rigid riding?

  2. #2
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    Not a singlespeed, but otherwise just like the old days:

    http://www.rivercitybicycles.com/pro...d55caefa432915
    “The only Zen you find on tops of mountains is the Zen you bring there”---Robert M. Pirsig

  3. #3
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    Hmmm...the use of 71/73 angles with <17" chainstays became pretty widespread well before suspension forks were the norm.
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  4. #4
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    yes. check the soma singlespeed. maybe they changed but it used to have a 22.25 top tube on a 17in c-c frame. that's as old school as it gets.
    not only top tubes were short but wheelbase was usually 1in shorter. snappy bikes. new geom. looks like "bomb the trail" philosophy to me.
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  5. #5
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    Quote Originally Posted by colker1
    yes. check the soma singlespeed. maybe they changed but it used to have a 22.25 top tube on a 17in c-c frame. that's as old school as it gets.
    not only top tubes were short but wheelbase was usually 1in shorter. snappy bikes. new geom. looks like "bomb the trail" philosophy to me.
    71.5/73 angles with a 23.07" ETT
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  6. #6
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    Quote Originally Posted by shiggy
    71.5/73 angles with a 23.07" ETT
    19 c-t right? the 17 c-t was 22in.. though i am not that sure.
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  7. #7
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    Quote Originally Posted by colker1
    19 c-t right? the 17 c-t was 22in.. though i am not that sure.
    Nope, 17" http://www.somafab.com/geometry03.html
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  8. #8
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    Quote Originally Posted by shiggy
    their geared model still has a 1in shorter top tube. i guess if you want old school geom. you need an eno.
    Last edited by colker1; 03-14-2007 at 05:44 PM.
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  9. #9
    Nouveau Retrogrouch SuperModerator
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    Quote Originally Posted by colker1
    their geared model still has a 1in shorter top tube. i guess if you want old school geom. you need an eno.
    But still the same steep angles. Hardly the slack "old school" geo ebb is talking about.
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  10. #10
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    Quote Originally Posted by shiggy
    But still the same steep angles. Hardly the slack "old school" geo ebb is talking about.
    i know... the old bikes and those 69/70º head angles plus big rake forks were rock stable.
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  11. #11
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    You can find one on ebay!! Plenty of old bikes on there

  12. #12
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    Were those old bikes really slacker than today's ? I think it's the other way round. To get an old school geometry out of a newer frame you have to use a shorter fork. And even then recent top tubes seem much longer than say 1994.

  13. #13
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    Quote Originally Posted by Pooh Bear
    Were those old bikes really slacker than today's ? I think it's the other way round. To get an old school geometry out of a newer frame you have to use a shorter fork. And even then recent top tubes seem much longer than say 1994.
    My 1983 Univega had 68/68 angles, 18.25" chainstays, 46" wheelbase and a 23.5" TT on a 23" frame. THAT was old school.
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  14. #14
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    Quote Originally Posted by shiggy
    My 1983 Univega had 68/68 angles, 18.25" chainstays, 46" wheelbase and a 23.5" TT on a 23" frame. THAT was old school.
    that was in the pleistocenic period, before the invention of schools!
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  15. #15
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    Quote Originally Posted by shiggy
    My 1983 Univega had 68/68 angles, 18.25" chainstays, 46" wheelbase and a 23.5" TT on a 23" frame. THAT was old school.
    maybe my old school is younger than yours...

    1983? okay.

    I own a bike from the seventies that is very slack. But it is no mtb. It's a touring bike (says "touring sport" on it).

  16. #16
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    The old-school is back... kinda.

    For those that don't know Specialized has reintroduced the 25 year-old Stumpy with the same geometry, but new parts. Check out the http://www.specialized.com/bc/SBCBkM...&bikeTab=story

    If they also made a 17" I know what I'd be getting with my employee purchase this year. Of course you could just hunt Ebay and find plenty of slack geo fireroad bombers for cheap if you wanted.
    best,
    MonkeyB

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