Cycling Equipment · Public discussion

Campag chainring bolt stripped

Started by Rik O'Shea · · Last activity · 6 posts · 658 views

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Cycling Equipment
Published
2 April 2004
Last activity
28 April 2004
Original author
Rik O'Shea
Posts
6
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Public discussion
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  1. Did you ever start a maintenance job then wish you hadn't ?

    Help me understand what I did wrong.

    I was in the process of replacing a chainring on a Campag
    Record Chainset - a new 10-s version - there's a digram of
    it in the catalogue
    campagnolo.comspares04 A.pdf

    As with all my training bikes I was replacing a 53 for a 51
    chainring. It's a job I've carried out before on Shimano
    chainsets without any problems.

    I sprayed some penetrating oil on the chainring bolts. I
    loosened the four outward facing ones ok; they were VERY
    tight. When I tried loosening the inward facing chainring
    bolt (part FC-RE102), the non-standard one that screws the
    chainring to the crankarm, it

    it out, but this one screws into the crankarm. Anyway tring
    to salvage a bad situation, I carefully drilled this bolt
    but am left with a small piece in the crankarm. I replaced
    this chainring bolt with a normal one, but have lost the
    benefit of having the chainrings secured to the crankarm -
    anything else I can do here ?

    Given that chainrings on top-end chainsets are supposed to
    be replaceable, and that I worked very carefully, what did I
    do wrong ?

    Thanks in advance.

  2. rikoshea-<< Given that chainrings on top-end chainsets are
    supposed to be replaceable, and that I worked very
    carefully, what did I do wrong ? >><BR><BR>

    Nothing...we have had this problem but have been able to get
    the remnant out. Try using an easy out. Then grasso on the
    threads. WE take all the bolts out when new and grease them.

    Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St.
    Boulder, CO, 80302
    (303)440-3535 vecchios.comvecchios.com "Ruote convenzionali
    costruite eccezionalmente bene"

  3. << Given that chainrings on top-end chainsets are
    supposed to be

    Quoted message said:

    replaceable, and that I worked very carefully, what did I
    do wrong ?

    Quoted message said:

    <BR><BR>

    Nothing...we have had this problem but have been able
    to get the


    remnant out.

    Quoted message said:

    Try using an easy out. Then grasso on the threads. WE
    take all the


    bolts out

    Quoted message said:

    when new and grease them.

    I think it's the only part on the bike that really can be
    improved, maybe by adding some sort of profile to the
    chainrings so you don't have to worry about the back part
    turning while turning the outside part. Those suckers
    always seem glued together and it's hard to get a good
    grip. The general tool for it like ParkTool's CNW-1 (
    parktool.comCNW 1.shtml) or Shimano's
    equivalent tool also suck cause you always come one hand
    short using it and it's easy to strip the groove at the
    back of the chainring. I'm going to try the Cyclus tool now
    (roseversand.derose main.cfm
    134&spr_id=2 &MID=0&CID=175), looks like the best
    tool/design for the job.

    "Qui si parla Campagnolo " <[email hidden]> wrote in
    message "]news:[email hidden]...

    Quoted message said:

    rikoshea-<< Given that chainrings on top-end chainsets are
    supposed


    to be

    Quoted message said:

    replaceable, and that I worked very carefully, what did I
    do wrong ?

    Quoted message said:

    <BR><BR>

    Nothing...we have had this problem but have been able
    to get the


    remnant out.

    Quoted message said:

    Try using an easy out. Then grasso on the threads. WE
    take all the


    bolts out

    Quoted message said:

    when new and grease them.

    Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St.
    Boulder, CO, 80302
    (303)440-3535 vecchios.comvecchios.com "Ruote convenzionali
    costruite eccezionalmente bene"

  4. Rik O'Shea wrote: -snip-

    Quoted message said:

    I was in the process of replacing a chainring on a Campag
    Record Chainset - a new 10-s version - there's a digram of
    it in the catalogue
    campagnolo.comspares04 A.pdf


    -snip-

    Quoted message said:

    I sprayed some penetrating oil on the chainring bolts. I
    loosened the four outward facing ones ok; they were VERY
    tight. When I tried loosening the inward facing chainring
    bolt (part FC-RE102), the non-standard one that screws the
    chainring to the crankarm, it

    Quoted message said:

    it out, but this one screws into the crankarm. Anyway
    tring to salvage a bad situation, I carefully drilled this
    bolt but am left with a small piece in the crankarm. I
    replaced this chainring bolt with a normal one, but have
    lost the benefit of having the chainrings secured to the
    crankarm - anything else I can do here ?


    -snip-

    That bolt, like most new chainring bolts, arrives dry and
    tight. Except this one is aluminum. It might have been
    better to prep it, and the other four, with grease when the
    crank was first put in service, rather that wait for the
    inevitable oxidation to make it more difficult.

    Then again, it might have been overtorqued dry when
    received. (IOW, it may not be your fault but you can't
    know that)
    --
    Andrew Muzi www.yellowjersey.org Open every day since 1
    April, 1971

  5. "Ronald" <[email hidden]> wrote in message news:<[email hidden]>...

    Quoted message said:


    I think it's the only part on the bike that really can be
    improved, maybe by adding some sort of profile to the
    chainrings so you don't have to worry about the back part
    turning while turning the outside part. Those suckers
    always seem glued together and it's hard to get a good
    grip. The general tool for it like ParkTool's CNW-1 (
    parktool.comCNW 1.shtml) or Shimano's
    equivalent tool also suck cause you always come one hand
    short using it and it's easy to strip the groove at the
    back of the chainring. I'm going to try the Cyclus tool
    now (roseversand.derose main.cfm
    ID=17134&spr_id=2 &MID=0&CID=175), looks like the best
    tool/design for the job.

    Hi, the Cyclus tool looks interesting, are they available in
    the USA? I did a search on them and only came up with
    European dealers. Thank you, Jeff

  6. Thanks for the feedback. I removed the remnant and
    replaced the inward facing chainring bolt (part FC-RE102)
    - a chainring bolt for a triple worked as a good
    substitute for this.

    [email hidden] (Qui si parla Campagnolo ) wrote in
    message news:<20040402084939.01433.00000513@mb-
    m15.aol.com>...

    Quoted message said:

    rikoshea-<< Given that chainrings on top-end chainsets are
    supposed to be replaceable, and that I worked very
    carefully, what did I do wrong ? >><BR><BR>

    Nothing...we have had this problem but have been able to
    get the remnant out. Try using an easy out. Then grasso
    on the threads. WE take all the bolts out when new and
    grease them.

    Peter Chisholm

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