L
Lou Holtman
Guest
Tom Nakashima wrote:
> "Lou Holtman" <[email protected]> wrote in message
> news:[email protected]...
>> Tom Nakashima wrote:
>>> "Lou Holtman" <[email protected]> wrote in message
>>> news:[email protected]...
>>>> Tom Nakashima wrote:
>>>>> "A Muzi" <[email protected]> wrote in message
>>>>> news:[email protected]...
>>>>>> Mike Jacoubowsky wrote:
>>>>>>> Bent-up derailleur hangers are rarely a result of a poor set-up on
>>>>>>> the bike. It could happen, but more likely it's something that got
>>>>>>> caught in the chain or derailleur (it doesn't take much; a small twig
>>>>>>> can do it, one customer picked up a piece of cloth). The other thing
>>>>>>> to look for, that would go back to the assembly of the bike (most
>>>>>>> likely at the factory) would be a bad chain pin, causing the chain to
>>>>>>> separate and come apart while going through the derailleur, which can
>>>>>>> lead to very bad things. This will almost always be at the connecting
>>>>>>> point in the chain. Definitely something to look for.
>>>>>> That's all true, but don't you find the bulk of them show pavement
>>>>>> marks on the derailleur body? Once bent inward, catching a spoke is
>>>>>> almost inevitable.
>>>>>> --
>>>>>> Andrew Muzi
>>>>>> www.yellowjersey.org
>>>>>> Open every day since 1 April, 1971
>>>>> Sorry, but you guys lost me here, how can a small twig caught in the
>>>>> chain bend a derailleur hanger? Seems to me you have to knock them
>>>>> pretty hard against concrete or a rock to bend them or break them.
>>>>> -tom
>>>> Never had chainsuck then. Broke my derailleur hanger off two weeks ago.
>>>> Fotunately it was a replacable one. Same happens when a twig gets
>>>> caught.
>>>>
>>>>
>>>> Lou
>>>> --
>>>> Posted by news://news.nb.nu (http://www.nb.nu)
>>> Yes I have had chainsuck many times,
>>> but never broken a derailleur hanger.
>>> -tom
>>
>> You can't imagine that when this happes and you are in one of the larger
>> sprockets that when the derailleur slaps against the chainstays the
>> derailleur cage can easily end up in the spokes?
>>
>> Lou
>> --
>> Posted by news://news.nb.nu (http://www.nb.nu)
>
> Lou,
> you can throw and chain off the either big or small chainring and get
> chainsuck. I've have thrown chains and had it get stuck between the
> hub and frame, but not enough to break off the derailleur hanger.
> And I've also had branches, twigs get into the chain, but again never
> a broken derailleur hanger.
> But if you say you have I believe you.
> -tom
>
>
Tom, by chainsuck I mean that the chain doesn't 'break loose' at the
lower part of the chainring. It isn't thrown of the chain ring it just
keep following it. All the slack is eaten up and the derailleur cage
slaps against the chainstays and is easily diverted into the spokes and
when that happens hell breaks loose.
Lou
--
Posted by news://news.nb.nu (http://www.nb.nu)
> "Lou Holtman" <[email protected]> wrote in message
> news:[email protected]...
>> Tom Nakashima wrote:
>>> "Lou Holtman" <[email protected]> wrote in message
>>> news:[email protected]...
>>>> Tom Nakashima wrote:
>>>>> "A Muzi" <[email protected]> wrote in message
>>>>> news:[email protected]...
>>>>>> Mike Jacoubowsky wrote:
>>>>>>> Bent-up derailleur hangers are rarely a result of a poor set-up on
>>>>>>> the bike. It could happen, but more likely it's something that got
>>>>>>> caught in the chain or derailleur (it doesn't take much; a small twig
>>>>>>> can do it, one customer picked up a piece of cloth). The other thing
>>>>>>> to look for, that would go back to the assembly of the bike (most
>>>>>>> likely at the factory) would be a bad chain pin, causing the chain to
>>>>>>> separate and come apart while going through the derailleur, which can
>>>>>>> lead to very bad things. This will almost always be at the connecting
>>>>>>> point in the chain. Definitely something to look for.
>>>>>> That's all true, but don't you find the bulk of them show pavement
>>>>>> marks on the derailleur body? Once bent inward, catching a spoke is
>>>>>> almost inevitable.
>>>>>> --
>>>>>> Andrew Muzi
>>>>>> www.yellowjersey.org
>>>>>> Open every day since 1 April, 1971
>>>>> Sorry, but you guys lost me here, how can a small twig caught in the
>>>>> chain bend a derailleur hanger? Seems to me you have to knock them
>>>>> pretty hard against concrete or a rock to bend them or break them.
>>>>> -tom
>>>> Never had chainsuck then. Broke my derailleur hanger off two weeks ago.
>>>> Fotunately it was a replacable one. Same happens when a twig gets
>>>> caught.
>>>>
>>>>
>>>> Lou
>>>> --
>>>> Posted by news://news.nb.nu (http://www.nb.nu)
>>> Yes I have had chainsuck many times,
>>> but never broken a derailleur hanger.
>>> -tom
>>
>> You can't imagine that when this happes and you are in one of the larger
>> sprockets that when the derailleur slaps against the chainstays the
>> derailleur cage can easily end up in the spokes?
>>
>> Lou
>> --
>> Posted by news://news.nb.nu (http://www.nb.nu)
>
> Lou,
> you can throw and chain off the either big or small chainring and get
> chainsuck. I've have thrown chains and had it get stuck between the
> hub and frame, but not enough to break off the derailleur hanger.
> And I've also had branches, twigs get into the chain, but again never
> a broken derailleur hanger.
> But if you say you have I believe you.
> -tom
>
>
Tom, by chainsuck I mean that the chain doesn't 'break loose' at the
lower part of the chainring. It isn't thrown of the chain ring it just
keep following it. All the slack is eaten up and the derailleur cage
slaps against the chainstays and is easily diverted into the spokes and
when that happens hell breaks loose.
Lou
--
Posted by news://news.nb.nu (http://www.nb.nu)