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new chain, slack



 
 
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  #51  
Old January 2nd 18, 06:07 AM posted to rec.bicycles.tech
Emanuel Berg[_2_]
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Default new chain, slack

By the way, is there a dedicated tool to
control chain slackness? Perhaps one could do
one oneself - a bar and a pin? A ruler will do,
of course...

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  #52  
Old January 2nd 18, 06:22 AM posted to rec.bicycles.tech
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Default new chain, slack

Take the new chain out of package

Lay on dedicated seasoned board

Mark board every 6 inches /FOOT exactly at link center at these points

Drill hole in board hang from wall
  #53  
Old January 2nd 18, 06:26 AM posted to rec.bicycles.tech
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Default new chain, slack

Yacan also do a 2nd mark group after hanging the new chain vertically on the wall...when warm out ...for a week ...see what difference. The stretched chain is a better comparison measure
  #54  
Old January 2nd 18, 06:50 AM posted to rec.bicycles.tech
Emanuel Berg[_2_]
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Default new chain, slack

avagadro7 wrote:

Yacan also do a 2nd mark group after hanging
the new chain vertically on the wall...when
warm out ...for a week ...see what
difference. The stretched chain is a better
comparison measure


You are probably joking but for the record
I mean when the chain is on the bike and
in use.

--
underground experts united
http://user.it.uu.se/~embe8573
  #55  
Old January 2nd 18, 09:50 PM posted to rec.bicycles.tech
Frank Krygowski[_4_]
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Default new chain, slack

On 1/2/2018 12:07 AM, Emanuel Berg wrote:
By the way, is there a dedicated tool to
control chain slackness? Perhaps one could do
one oneself - a bar and a pin? A ruler will do,
of course...


If you mean a tool to check the wear of a chain, yes there are several
varieties. Here's one:
https://www.parktool.com/product/cha...dicator-cc-3-2

There have been debates here about their accuracy. Measuring the length
of 24 links is easy enough.

FWIW, I'm still running some ancient SunTour freewheels on some bikes,
since I was given a well-stocked spocket board. My bigger problem is
determining when a cog is worn enough that it will skip with a new chain.

--
- Frank Krygowski
  #56  
Old January 2nd 18, 11:49 PM posted to rec.bicycles.tech
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Default new chain, slack

Maybe wear is progressively elliptical ???

I mixed 2 twice n cannah see much diff... maybe if yawl took I'm off n putumayo back on a couplane times. ...
  #57  
Old January 3rd 18, 01:52 AM posted to rec.bicycles.tech
Emanuel Berg[_2_]
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Posts: 1,035
Default new chain, slack

Frank Krygowski wrote:

If you mean a tool to check the wear of
a chain, yes there are several varieties.


No, I mean a tool to check how tightly the
chain is mounted on the bike, which I suppose
is a function of chain wear to some degree but
even more so the distance between sprocket and
chainring, i.e. how far the rear wheel is
pulled back?

And the method of quantification could be the
possible vertical movement of the chain at
its loosest?

--
underground experts united
http://user.it.uu.se/~embe8573
  #58  
Old January 3rd 18, 02:23 AM posted to rec.bicycles.tech
Frank Krygowski[_4_]
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Posts: 10,538
Default new chain, slack

On 1/2/2018 7:52 PM, Emanuel Berg wrote:
Frank Krygowski wrote:

If you mean a tool to check the wear of
a chain, yes there are several varieties.


No, I mean a tool to check how tightly the
chain is mounted on the bike, which I suppose
is a function of chain wear to some degree but
even more so the distance between sprocket and
chainring, i.e. how far the rear wheel is
pulled back?

And the method of quantification could be the
possible vertical movement of the chain at
its loosest?


I check vertical movement at the crank position where the chain is
tightest. I don't think the measurement is critical, as long as there's
a little slack - say at least a centimeter.

--
- Frank Krygowski
  #59  
Old January 3rd 18, 02:37 AM posted to rec.bicycles.tech
Emanuel Berg[_2_]
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Posts: 1,035
Default new chain, slack

Frank Krygowski wrote:

I check vertical movement at the crank
position where the chain is tightest. I don't
think the measurement is critical, as long as
there's a little slack - say at least
a centimeter.


Yes, but is there a tool to do that? I mean to
to *only* that... not a ruler.

--
underground experts united
http://user.it.uu.se/~embe8573
  #60  
Old January 3rd 18, 02:49 AM posted to rec.bicycles.tech
AMuzi
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Posts: 13,447
Default new chain, slack

On 1/2/2018 6:52 PM, Emanuel Berg wrote:
Frank Krygowski wrote:

If you mean a tool to check the wear of
a chain, yes there are several varieties.


No, I mean a tool to check how tightly the
chain is mounted on the bike, which I suppose
is a function of chain wear to some degree but
even more so the distance between sprocket and
chainring, i.e. how far the rear wheel is
pulled back?

And the method of quantification could be the
possible vertical movement of the chain at
its loosest?

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

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


 




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