How to use self-extracting crank bolts?
Steven Correll
I'm the happy but dense owner of a new set of cranks (Campy Chorus,
specifically) which claim to have self-extracting bolts. I don't know
how to use the bolts to remove the crankarms, and the manufacturer's
instruction booklet neglects in a variety of different languages to
explain this. Can someone explain? Thanks.
--
Steven Correll == PO Box 66625, Scotts Valley, CA 95067 == s...@netcom.com
Sheldon Brown
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Steven Correll wrote:
>
> I'm the happy but dense owner of a new set of cranks (Campy Chorus,
> specifically) which claim to have self-extracting bolts. I don't know
> how to use the bolts to remove the crankarms, and the manufacturer's
> instruction booklet neglects in a variety of different languages to
> explain this. Can someone explain? Thanks.
Here are the detailed step-by-step instructions:
1. Turn the Allen wrench counterclockwise until the crank falls off.
Sheldon "Some Force Will Be Required" Brown
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Richard Strayer
>> I'm the happy but dense owner of a new set of cranks (Campy Chorus,
>> specifically) which claim to have self-extracting bolts. I don't know
>> how to use the bolts to remove the crankarms, and the manufacturer's
>> instruction booklet neglects in a variety of different languages to
>> explain this. Can someone explain? Thanks.
>
>Here are the detailed step-by-step instructions:
>
>1. Turn the Allen wrench counterclockwise until the crank falls off.
>
>Sheldon "Some Force Will Be Required" Brown
1. Insert allen wrench into crank bolt.
2. Turn wrench counterclockwise until the crank falls off.
Your explanation wasn't detailed enough...he did say he was dense.
RES
Steven Correll
In article <3336bc4e...@news.mite.net>,
Your instructions don't work; the allen bolt comes completely out of
the cranks, but they remain attached to the spindle. You have confirmed
my suspicion that I was sold this year's cranks with some past year's
bolts (specifically, the disk-like gizmo that surrounds the head of the
allen bolt does not have a threaded edge, does not contact the crank,
and does not rotate relative to the bolt.) Sigh.
Jeff Orum
Steven Correll (s...@netcom.com) wrote:
> >>> I'm the happy but dense owner of a new set of cranks (Campy Chorus,
> >>> specifically) which claim to have self-extracting bolts.
> Your instructions don't work; the allen bolt comes completely out of
> the cranks
Well, sounds like they work to me. Notes that the claim was the bolts
were self-extracting, it didn't say anything about the cranks. :-)
Jobst Brandt
Steven Correll writes:
> Your instructions don't work; the Allen bolt comes completely out of
> the cranks, but they remain attached to the spindle. You have
> confirmed my suspicion that I was sold this year's cranks with some
> past year's bolts (specifically, the disk-like gizmo that surrounds
> the head of the Allen bolt does not have a threaded edge, does not
> contact the crank, and does not rotate relative to the bolt.) Sigh.
Aha! You have a racing version that mechanics demanded because the
extractor was such a pain. You'll have to get the special Campagnolo
left-hand-thread extractor that fits these cranks. While you're at it
you might just want to get some regular crank bolts with a hex head
and washers so you can tighten them with a reasonable wrench as team
mechanics have done. The whole self extracting deal was for people
who have the socket head mentality of chromed surfaces with only a
hint of a hole for a hex key. Nuts and bolts are OUT these days.
Jobst Brandt <jbr...@hpl.hp.com>
Thomas H. Kunich
In article <5hp59s$g...@hplms2.hpl.hp.com>,
Jobst Brandt <jbr...@hpl.hp.com> wrote:
>Nuts and bolts are OUT these days.
I don't know, nuts seem as plentiful as ever.
Steven Correll
>> ..You have
>> confirmed my suspicion that I was sold this year's cranks with some
>
>Aha! You have a racing version that mechanics demanded because the
I'm not sure that anyone should still be interested in this minor problem,
but it now seems I was sold Athena bolts along with Chorus cranks. Not
only do Athena bolts lack the self-extracting feature; they also use a
slightly larger allen wrench, and mine match that size. Either Campy or
Nashbar messed up. A normal extractor tool works fine.