shimano compatibility: 9 speed crankset compatible to 8 speed

[valli]

Hi,

unfortunateley, last summer the bottom bracket of my road bike broke.
The crankset also got a crack. Thus, both has to be renewed.

The bike was completely equipped with 8 speed (7400) Dura Ace components.
It is quite easy to obtain a new 9 speed crankset and bottom bracket.

Does anyone know, whether the (double) 9 speed crankset is compatible to
8 speed
front derailleur, (double) left lever and 8 speed chain ?

Thanks in advance,

Valentin

--

Valentin Rottmann
email: [email protected]
hint: put a "d" in front of my email-address

 

[RonSonic]

On Tue, 09 Jan 2007 13:04:17 +0100, valli <[email protected]> wrote:

>Hi,
>
>unfortunateley, last summer the bottom bracket of my road bike broke.
>The crankset also got a crack. Thus, both has to be renewed.
>
>The bike was completely equipped with 8 speed (7400) Dura Ace components.
>It is quite easy to obtain a new 9 speed crankset and bottom bracket.
>
>Does anyone know, whether the (double) 9 speed crankset is compatible to
>8 speed
>front derailleur, (double) left lever and 8 speed chain ?
>
>Thanks in advance,

It worked for me on both road and mountain bikes.

I seem to always be upgrading one bit at a time. Thank goodness all these parts
work together betther than the manufacturers would have you think.

Ron

 

[Qui si parla Campagnolo]

valli wrote:
> Hi,
>
> unfortunateley, last summer the bottom bracket of my road bike broke.
> The crankset also got a crack. Thus, both has to be renewed.
>
> The bike was completely equipped with 8 speed (7400) Dura Ace components.
> It is quite easy to obtain a new 9 speed crankset and bottom bracket.
>
> Does anyone know, whether the (double) 9 speed crankset is compatible to
> 8 speed
> front derailleur, (double) left lever and 8 speed chain ?
>
> Thanks in advance,
>
> Valentin
>

yes, completely, w/o any modification..just put it on and ride.

 

[RS]

In article <[email protected]>, [email protected]
says...
>
>
>Hi,
>
>unfortunateley, last summer the bottom bracket of my road bike broke.
>The crankset also got a crack. Thus, both has to be renewed.
>
>The bike was completely equipped with 8 speed (7400) Dura Ace
components.
>It is quite easy to obtain a new 9 speed crankset and bottom bracket.
>
>Does anyone know, whether the (double) 9 speed crankset is compatible
to
>8 speed
>front derailleur, (double) left lever and 8 speed chain ?
>
>Thanks in advance,
>
> Valentin
>
>--
>
>Valentin Rottmann
>email: [email protected]
>hint: put a "d" in front of my email-address

A 10sp compatible crank may have a problem easily solved by putting
spacers (I think .6mm is the size) on the widen the distance on the small
chain ring. Other then that should work fine.

 

[Qui si parla Campagnolo]

RS wrote:
> In article <[email protected]>, [email protected]
> says...
> >
> >
> >Hi,
> >
> >unfortunateley, last summer the bottom bracket of my road bike broke.
> >The crankset also got a crack. Thus, both has to be renewed.
> >
> >The bike was completely equipped with 8 speed (7400) Dura Ace
> components.
> >It is quite easy to obtain a new 9 speed crankset and bottom bracket.
> >
> >Does anyone know, whether the (double) 9 speed crankset is compatible
> to
> >8 speed
> >front derailleur, (double) left lever and 8 speed chain ?
> >
> >Thanks in advance,
> >
> > Valentin
> >
> >--
> >
> >Valentin Rottmann
> >email: [email protected]
> >hint: put a "d" in front of my email-address
>
> A 10sp compatible crank may have a problem easily solved by putting
> spacers (I think .6mm is the size) on the widen the distance on the small
> chain ring. Other then that should work fine.

No need for this either-

 

[Werehatrack]

On Tue, 09 Jan 2007 17:29:21 -0800, RS <[email protected]> may
have said:

>In article <[email protected]>, [email protected]
>says...
>>
>>
>>Hi,
>>
>>unfortunateley, last summer the bottom bracket of my road bike broke.
>>The crankset also got a crack. Thus, both has to be renewed.
>>
>>The bike was completely equipped with 8 speed (7400) Dura Ace
>components.
>>It is quite easy to obtain a new 9 speed crankset and bottom bracket.
>>
>>Does anyone know, whether the (double) 9 speed crankset is compatible
>to
>>8 speed
>>front derailleur, (double) left lever and 8 speed chain ?
>>
>
>A 10sp compatible crank may have a problem easily solved by putting
>spacers (I think .6mm is the size) on the widen the distance on the small
>chain ring. Other then that should work fine.

This is only potentially advisable when employing a 10sp der with an
8sp chain, and its only utility is in reducing chain noise caused by
the chain hitting the fder cage when cross-chaining, such as running
in the 39/11 combination. It's not always effective, even for that.
Simply shifting to the 53/15 sprocket pair produces the same ratio and
eliminates the rubbing, without the need for any spacers.

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.

 

[valli]

Hi NG,

thanks for your hints !!
I will look for a 9 sp crankset at an auction plattform now.

Thanks,
Valentin

Werehatrack wrote:
> On Tue, 09 Jan 2007 17:29:21 -0800, RS <[email protected]> may
> have said:
>
>> In article <[email protected]>, [email protected]
>> says...
>>>
>>> Hi,
>>>
>>> unfortunateley, last summer the bottom bracket of my road bike broke.
>>> The crankset also got a crack. Thus, both has to be renewed.
>>>
>>> The bike was completely equipped with 8 speed (7400) Dura Ace
>> components.
>>> It is quite easy to obtain a new 9 speed crankset and bottom bracket.
>>>
>>> Does anyone know, whether the (double) 9 speed crankset is compatible
>> to
>>> 8 speed
>>> front derailleur, (double) left lever and 8 speed chain ?
>>>
>> A 10sp compatible crank may have a problem easily solved by putting
>> spacers (I think .6mm is the size) on the widen the distance on the small
>> chain ring. Other then that should work fine.
>
> This is only potentially advisable when employing a 10sp der with an
> 8sp chain, and its only utility is in reducing chain noise caused by
> the chain hitting the fder cage when cross-chaining, such as running
> in the 39/11 combination. It's not always effective, even for that.
> Simply shifting to the 53/15 sprocket pair produces the same ratio and
> eliminates the rubbing, without the need for any spacers.
>