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Thread: Bent RD

  1. #1
    Carpe Diem bdcheung's Avatar
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    Bent RD

    Has this ever happened to you? I was in a crash, bent the RD, but the hanger is fine (checked with alignment tool).

    edit: it's a Rival RD. Been replaced now, everything is fine.
    Last edited by bdcheung; 03-27-08 at 09:12 AM.
    "When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
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    Race to train jrennie's Avatar
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    Which part is bent? Is it the pulley cage, pivot bolt, pivot arms?

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    Carpe Diem bdcheung's Avatar
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    I think it's the cage... when viewed from the rear of the bike, the cage wasn't vertical, and the top (jockey?) pulley was skewed. The team mechanic and I tried bending it back, but could never get it back "to normal" (never really thought we could).
    "When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
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    Making a kilometer blurry waterrockets's Avatar
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    So, the cage probably isn't bent, it's the cage pivot (if the top pulley is misaligned too).

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    Carpe Diem bdcheung's Avatar
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    yeah, probably that.
    "When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
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    Senior Member eskimo85's Avatar
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    Bend it back, it will be fine.

  7. #7
    Carpe Diem bdcheung's Avatar
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    Quote Originally Posted by eskimo85 View Post
    Bend it back, it will be fine.
    Tried that (see my second post), couldn't get it perfect.
    "When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
    ΛΧΑ ΔΞ179 - 15% off your first Hammer Nutrition order!

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    . Namenda's Avatar
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    I'm waiting for the ebay listing..."gently used, low miles, mild cosmetic damage that doesn't affect functionality, sold as-is"

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    Senior Member Brian Ratliff's Avatar
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    I assume you are okay... from the crash, that is?
    Cat 2 Track, Cat 3 Road.
    "If you’re new enough [to racing] that you would ask such question, then i would hazard a guess that if you just made up a workout that sounded hard to do, and did it, you’d probably get faster." --the tiniest sprinter

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    Carpe Diem bdcheung's Avatar
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    Nothing serious. Road rash, busted right shifter, new bar tape, that's about it.
    "When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
    ΛΧΑ ΔΞ179 - 15% off your first Hammer Nutrition order!

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    Double Secret Probation R900's Avatar
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    I bent my Dura-Ace RD new years eve. The LBS bent the hanger to straighten, but I wasn't totally convinced. I bought the Park alignment tool, and sure enough the RD was the problem. I ended up replacing the RD and realigned the hanger. It's been great since.
    Time to Ride...

  12. #12
    My idea of fun kensuf's Avatar
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    Quote Originally Posted by bdcheung View Post
    Has this ever happened to you? I was in a crash, bent the RD, but the hanger is fine (checked with alignment tool).

    edit: it's a Rival RD. Been replaced now, everything is fine.
    No.

    But I was sprinting tonight and I bent an FSA chainring, threw my chain, locked up my drivetrain, and left a nice nasty brown stain in my shorts.

    Does that count?
    Putting the Duh in Floriduh.

  13. #13
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    Rear derailleurs are surprisingly resilient. I'm surprised the rear der didn't work out. I regularly tweak rear derailleurs when friends complain about poor shifting.

    You should check not only vertical up/down alignment but fore/aft alignment too. Check when in the 39x11 (or equivalent cross chained gear) so the rear der cage is as fore/aft as possible. This is normally where tweaking makes a difference.

    For next time,
    cdr

  14. #14
    Carpe Diem bdcheung's Avatar
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    Next time I'll fly you out here to be my mechanic, CDR
    "When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
    ΛΧΑ ΔΞ179 - 15% off your first Hammer Nutrition order!

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    Heh. Only if there's a crit with a slight hill in it in your vicinity. Too bad my in-law's in-laws moved from Fairfax. For next time don't toss the der too quickly.

    cdr

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