Re: Link Repost Request


Werehatrack wrote:
On Tue, 14 Mar 2006 18:29:39 -0600, David <dbsaia@xxxxxxxxxxx> 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.

.

Relevant Pages

  • Re: Topologies of Spec
    ... > On 08.11.2005 10:59, Jose Capco wrote: ... >> We know for a ring R that there are standard topologies on Spec R (set ... >> Spec R is compact and/or Haussdorf.. ...
    (sci.math)
  • Re: Group question on machining something
    ... This is a machining hobby group..right? ... handle ring, then attach the handle ring to the sleeve with some set ... >> Gunner, I know you would probably rather make your own, but these things ... Making sure other people play nice and dont kill each other ...
    (rec.crafts.metalworking)
  • Re: Gain Ratios and CX
    ... generation compact cranksets. ... require a downshift from the 53x23 (big ring, ... on course that involve front shifting. ... bit bigger w/ the compact crank. ...
    (rec.bicycles.racing)
  • Re: Repair of a broken camera lens
    ... I had to skim more of the inside of the thin wall, ... I didn't glue the ring in place. ... Thanks for the help, advice and drawings. ... with machining thin sections even in wood! ...
    (uk.rec.models.engineering)
  • Re: -- ties and quasi-paths
    ... L compact connected linear order ... T ring at a when a in T, T connected, T not unicoherent ... In the second part of that post, I introduced the notion of minimal tie ... In addition it's a ring, a minimal compact ring but not a minimal ...
    (sci.math)