Link Repost Request



D

David

Guest
With apologies; I searched and searched but can't find the link for a
US-based shop that sells cranks that have been machined from triple to
double, effectively creating a compact crank.

I would swear I saw it here, but I gave up swearing for lent. Told a
friend about it recently but sent him to the wrong site.

I'm not trying to start an endless discussion about why this is or isn't
a good idea, or questioning why it does or doesn't makes sense
financially, ethically, or otherwise. [Although there does seem to be a
shortage of OT posts recently - maybe everybody is out riding for a change?]

Thanks in advance,
David
 
David wrote:
> With apologies; I searched and searched but can't find the link for a
> US-based shop that sells cranks that have been machined from triple to
> double, effectively creating a compact crank.
>
> I would swear I saw it here, but I gave up swearing for lent. Told a
> friend about it recently but sent him to the wrong site.
>
> I'm not trying to start an endless discussion about why this is or isn't
> a good idea, or questioning why it does or doesn't makes sense
> financially, ethically, or otherwise. [Although there does seem to be a
> shortage of OT posts recently - maybe everybody is out riding for a change?]
>
> Thanks in advance,
> David


http://www.yellowjersey.org/crankcut.html
 
On Tue, 14 Mar 2006 18:29:39 -0600, David <[email protected]> wrote:

>With apologies; I searched and searched but can't find the link for a
>US-based shop that sells cranks that have been machined from triple to
>double, effectively creating a compact crank.
>
>I would swear I saw it here, but I gave up swearing for lent. Told a
>friend about it recently but sent him to the wrong site.
>
>I'm not trying to start an endless discussion about why this is or isn't
>a good idea, or questioning why it does or doesn't makes sense
>financially, ethically, or otherwise. [Although there does seem to be a
>shortage of OT posts recently - maybe everybody is out riding for a change?]
>
>Thanks in advance,


No machining needed in my experience; just dismount the granny ring
and leave off the bolts. The lateral spacing between sprockets is the
same for doubles and triples, the latter just have one more sprocket.
If the resulting positions are too far to the right, sometimes people
swap the big ring to the other side of the spider (adding spacers as
required for the smaller ring), but I'd avoid that if possible.
Removing the granny ring won't make a compact crankset out of a
large-circle one, in any event; you would have to move the bolt hole
locations and possibly change the number of bolts if that was the real
goal, and AFAIK no one does that, as the solid bosses to accomplish it
are generally not present in the right places to make it work.
--
Typoes are a feature, not a bug.
Some gardening required to reply via email.
Words processed in a facility that contains nuts.
 
David wrote:
> With apologies; I searched and searched but can't find the link for a
> US-based shop that sells cranks that have been machined from triple to
> double, effectively creating a compact crank.
>
> I would swear I saw it here, but I gave up swearing for lent. Told a
> friend about it recently but sent him to the wrong site.
>
> I'm not trying to start an endless discussion about why this is or isn't
> a good idea, or questioning why it does or doesn't makes sense
> financially, ethically, or otherwise. [Although there does seem to be a
> shortage of OT posts recently - maybe everybody is out riding for a
> change?]


We did that for a few years because Sugino had dropped their
110mm double.
Now that Sugino has that as a standard product again in
170mm, 172.5mm and 175mm arms, we only machine them for 165mm

http://www.yellowjersey.org/crankcut.html

--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971
 
Werehatrack wrote:
> On Tue, 14 Mar 2006 18:29:39 -0600, David <[email protected]> wrote:
>
> >With apologies; I searched and searched but can't find the link for a
> >US-based shop that sells cranks that have been machined from triple to
> >double, effectively creating a compact crank.
> >
> >I would swear I saw it here, but I gave up swearing for lent. Told a
> >friend about it recently but sent him to the wrong site.
> >
> >I'm not trying to start an endless discussion about why this is or isn't
> >a good idea, or questioning why it does or doesn't makes sense
> >financially, ethically, or otherwise. [Although there does seem to be a
> >shortage of OT posts recently - maybe everybody is out riding for a change?]
> >
> >Thanks in advance,

>
> No machining needed in my experience; just dismount the granny ring
> and leave off the bolts.



I just can't understand why anyone would spend money to make their
crankset less useful. A you say, if you want a "compact double", remove
the inner/granny ring, mount the suitable outer and inner (e.g., 50/34)
and ride on. But, should a ride in big hill country arise, you still
have the option of making it a triple again with the proper chainrings
and, maybe, a longer BB/BB spindle.







The lateral spacing between sprockets is the
> same for doubles and triples, the latter just have one more sprocket.
> If the resulting positions are too far to the right, sometimes people
> swap the big ring to the other side of the spider (adding spacers as
> required for the smaller ring), but I'd avoid that if possible.
> Removing the granny ring won't make a compact crankset out of a
> large-circle one, in any event; you would have to move the bolt hole
> locations and possibly change the number of bolts if that was the real
> goal, and AFAIK no one does that, as the solid bosses to accomplish it
> are generally not present in the right places to make it work.
> --
> Typoes are a feature, not a bug.
> Some gardening required to reply via email.
> Words processed in a facility that contains nuts.
 
A Muzi wrote:
> David wrote:
>> With apologies; I searched and searched but can't find the link for a
>> US-based shop that sells cranks that have been machined from triple
>> to double, effectively creating a compact crank.
>>
>> I would swear I saw it here, but I gave up swearing for lent. Told a
>> friend about it recently but sent him to the wrong site.
>>
>> I'm not trying to start an endless discussion about why this is or
>> isn't a good idea, or questioning why it does or doesn't makes sense
>> financially, ethically, or otherwise. [Although there does seem to
>> be a shortage of OT posts recently - maybe everybody is out riding
>> for a change?]

>
> We did that for a few years because Sugino had dropped their
> 110mm double.
> Now that Sugino has that as a standard product again in
> 170mm, 172.5mm and 175mm arms, we only machine them for 165mm
>
> http://www.yellowjersey.org/crankcut.html


The picture doesn't show the modified one, does it?
--
Phil, Squid-in-Training
 
On Thu, 16 Mar 2006 19:04:33 -0500, "Phil, Squid-in-Training"
<[email protected]> wrote:


>> http://www.yellowjersey.org/crankcut.html

>
>The picture doesn't show the modified one, does it?


Yeah it does. Take a closer look. The one without the rings is
modified. Look at where the small ring bolts on, there is less
material there.
It took me a while to see it too.


Life is Good!
Jeff
 
>>David wrote:
>>>With apologies; I searched and searched but can't find the link for a
>>>US-based shop that sells cranks that have been machined from triple
>>>to double, effectively creating a compact crank.
>>>I would swear I saw it here, but I gave up swearing for lent. Told a
>>>friend about it recently but sent him to the wrong site.
>>>I'm not trying to start an endless discussion about why this is or
>>>isn't a good idea, or questioning why it does or doesn't makes sense
>>>financially, ethically, or otherwise. [Although there does seem to
>>>be a shortage of OT posts recently - maybe everybody is out riding
>>>for a change?]


> A Muzi wrote:
>>We did that for a few years because Sugino had dropped their
>>110mm double.
>>Now that Sugino has that as a standard product again in
>>170mm, 172.5mm and 175mm arms, we only machine them for 165mm
>>http://www.yellowjersey.org/crankcut.html


Phil, Squid-in-Training wrote:
> The picture doesn't show the modified one, does it?


Yes, that's our machined and polishd surface on the left,
triple on the right.

--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971
 

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