Cycling Equipment · Public discussion

Crank questions?

Started by Ken Marcet · · Last activity · 2 posts · 414 views

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Cycling Equipment
Published
23 March 2005
Last activity
24 March 2005
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Ken Marcet
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  1. I I have this old "Sugino human technology cycloid" crank set, 2 crank arms,
    triple chain ring, 48t 38t 28t rings, that came off a schwinn something or
    other mtb / atb that I thought would make a nice upgrade for my Western
    Flyer road bike that still has an old ashtabula style crank. I have found a
    couple of conversion kits,
    http://www.bikepartsusa.com/product_info.phtml?p=01-96769&large=1 and
    http://www.jensonusa.com/store/product.aspx?i=BB610Z00 I would like to use
    a sealed cartridge bottom bracket, but the bottom bracket that was with the
    sugino is an older type with open cup and cones. Has any one used one of
    these kits? DO they take a cartridge bb, from the pictures it looks like
    they do. If they don't take the cartridge type is there a kit that will take
    a cartridge? Oh yeah and what is up with the oblong chainrings?

    Ken
    --
    More of my mind dribblings: http://mind-dribble.blogspot.com/
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  2. On Wed, 23 Mar 2005 18:03:54 -0500, "Ken Marcet" <[email hidden]>

    may have said:

    I I have this old "Sugino human technology cycloid" crank set, 2 crank arms,
    triple chain ring, 48t 38t 28t rings, that came off a schwinn something or
    other mtb / atb that I thought would make a nice upgrade for my Western
    Flyer road bike that still has an old ashtabula style crank.

    You're probably going to lose a little of the high-gear speed
    capacity, but as road bikes are generally geared higher than the
    average rider really needs, that's probably not a disadvantage.

    Quoted message said:

    I have found a couple of conversion kits,
    http://www.bikepartsusa.com/product_info.phtml?p=01-96769&large=1 and
    http://www.jensonusa.com/store/product.aspx?i=BB610Z00 I would like to use
    a sealed cartridge bottom bracket, but the bottom bracket that was with the
    sugino is an older type with open cup and cones. Has any one used one of
    these kits?

    Assuming that you're talking about using the Sugino non-sealed BB with
    the adapter, and assuming that the Sugino was set up for a 68mm BB
    shell (which is likely), it will work. The Sugino BB you have fits
    the same as the sealed cart type, except that you have to adjust the
    left cup and then lock it in place with a spanner on the lockring. No
    problem, as long as you have the tool(s).

    Quoted message said:

    DO they take a cartridge bb, from the pictures it looks like
    they do.

    The adapter is used with any 68mm "English thread" BB, sealed or not.

    Quoted message said:

    ...Oh yeah and what is up with the oblong chainrings?

    They were an attempt to capitalize on Shimano's advertising hype for
    the Biopace chainrings, which were also more or less elliptical. Some
    people like them, most have no real experience with them, some loathe
    them, and a few folks claim they will destoy your knees and send you
    into a nursing home in Florida. I have a set of Biopace rings on one
    of my bikes, and they neither seem to help nor hinder me. I think
    that in many cases, the hype - in both directions - is just that. For
    the amount of riding that I seem to recall you plan to do with this
    bike, I can't imagine that the elliptical sprockets will make a
    difference one way or the other.

    --
    My email address is antispammed; pull WEEDS if replying via e-mail.
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