[RBW] Re: Gray Shimano derailer cable housing busted

2011-03-22 Thread Earl Grey
Travis,

thanks for the info. Do you have a basket on that bike? Upon closer
inspection, I believe that contact between the housing and my rattan
basket caused the plastic to wear through which caused the rupture.
See a photo of the other spot where the housing contacted the basket:

http://www.flickr.com/photos/gernothuber/5548985681/

I will replace the right side housing shortly, since it shows the same
wear. I also swapped and turned the washers that came with the Silver
shifters so that the little hook now prevents excess lever travel:

http://www.flickr.com/photos/gernothuber/5548985783/

Cheers,

Gernot

On Mar 22, 1:44 am, Travis travisbreitenb...@gmail.com wrote:
 Oh oh oh! I had exactly the same thing happen in the exactly the same
 way with some brand new Jagwire derailleur housing, I mean exactly. I
 believe it just has to do with the way derailleur housing is built.
 The strands of wires inside are all running parallel to the cable, and
 if you put enough tension on the cable at a bend it will pull through
 those strands in order to straighten itself.

 To prevent repeat episodes, I set my front derailleur shifter up so
 that it is physically restricted by the shifter pod at the exact point
 at which the front derailleur is hitting the limit screw for the big
 ring. So, when I'm in the big ring my bar-end shifter is pointing
 upward, and when I'm in the small ring my shifter is parallel to the
 ground. I don't think it looks quite as nice this way, but I got over
 it quick and never have to worry about busting the housing.

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[RBW] Re: Gray Shimano derailer cable housing busted

2011-03-22 Thread Travis
Hi Gernot,

I did not have a basket on that bike and there was no visible wear on
the plastic coating of my housing. However, I'm sure wear like yours
certainly doesn't help. Perhaps you could try putting a little bit of
heat shrink tubing (can be found in the electrical dept. of hardware
stores) on your replacement cable housing to protect them at that wear
point. I also think you're on the right track with that washer on your
shifters. Way to kick that problem in the pants!

By the way, I've admired your photo sets in the past. Beautiful! I'm
jealous of your local. How do you feel about visitors, haha?

Best,
Travis

On Mar 22, 3:14 am, Earl Grey earlg...@gmail.com wrote:
 Travis,

 thanks for the info. Do you have a basket on that bike? Upon closer
 inspection, I believe that contact between the housing and my rattan
 basket caused the plastic to wear through which caused the rupture.
 See a photo of the other spot where the housing contacted the basket:

 http://www.flickr.com/photos/gernothuber/5548985681/

 I will replace the right side housing shortly, since it shows the same
 wear. I also swapped and turned the washers that came with the Silver
 shifters so that the little hook now prevents excess lever travel:

 http://www.flickr.com/photos/gernothuber/5548985783/

 Cheers,

 Gernot

 On Mar 22, 1:44 am, Travis travisbreitenb...@gmail.com wrote:

  Oh oh oh! I had exactly the same thing happen in the exactly the same
  way with some brand new Jagwire derailleur housing, I mean exactly. I
  believe it just has to do with the way derailleur housing is built.
  The strands of wires inside are all running parallel to the cable, and
  if you put enough tension on the cable at a bend it will pull through
  those strands in order to straighten itself.

  To prevent repeat episodes, I set my front derailleur shifter up so
  that it is physically restricted by the shifter pod at the exact point
  at which the front derailleur is hitting the limit screw for the big
  ring. So, when I'm in the big ring my bar-end shifter is pointing
  upward, and when I'm in the small ring my shifter is parallel to the
  ground. I don't think it looks quite as nice this way, but I got over
  it quick and never have to worry about busting the housing.

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[RBW] Re: Gray Shimano derailer cable housing busted

2011-03-22 Thread Earl Grey
We love visitors. Come on over and let's go for a ride. And thanks for
the shrink tubing tip.

Gernot

On Mar 23, 6:54 am, Travis travisbreitenb...@gmail.com wrote:
 Hi Gernot,

 I did not have a basket on that bike and there was no visible wear on
 the plastic coating of my housing. However, I'm sure wear like yours
 certainly doesn't help. Perhaps you could try putting a little bit of
 heat shrink tubing (can be found in the electrical dept. of hardware
 stores) on your replacement cable housing to protect them at that wear
 point. I also think you're on the right track with that washer on your
 shifters. Way to kick that problem in the pants!

 By the way, I've admired your photo sets in the past. Beautiful! I'm
 jealous of your local. How do you feel about visitors, haha?

 Best,
 Travis

 On Mar 22, 3:14 am, Earl Grey earlg...@gmail.com wrote:



  Travis,

  thanks for the info. Do you have a basket on that bike? Upon closer
  inspection, I believe that contact between the housing and my rattan
  basket caused the plastic to wear through which caused the rupture.
  See a photo of the other spot where the housing contacted the basket:

 http://www.flickr.com/photos/gernothuber/5548985681/

  I will replace the right side housing shortly, since it shows the same
  wear. I also swapped and turned the washers that came with the Silver
  shifters so that the little hook now prevents excess lever travel:

 http://www.flickr.com/photos/gernothuber/5548985783/

  Cheers,

  Gernot

  On Mar 22, 1:44 am, Travis travisbreitenb...@gmail.com wrote:

   Oh oh oh! I had exactly the same thing happen in the exactly the same
   way with some brand new Jagwire derailleur housing, I mean exactly. I
   believe it just has to do with the way derailleur housing is built.
   The strands of wires inside are all running parallel to the cable, and
   if you put enough tension on the cable at a bend it will pull through
   those strands in order to straighten itself.

   To prevent repeat episodes, I set my front derailleur shifter up so
   that it is physically restricted by the shifter pod at the exact point
   at which the front derailleur is hitting the limit screw for the big
   ring. So, when I'm in the big ring my bar-end shifter is pointing
   upward, and when I'm in the small ring my shifter is parallel to the
   ground. I don't think it looks quite as nice this way, but I got over
   it quick and never have to worry about busting the housing.

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[RBW] Re: Gray Shimano derailer cable housing busted

2011-03-21 Thread Michael_S
Never happened to me before, but I shift with care and caution..hehe

Was there a kink in the housing or  any sign of a sharp bend?  I had a
similar case  coming out of a Shimano brake/shifter.But it was some
silver Jagwire housing.  That's one reason I tape my cables along the
bar  because I don't like to have cable hanging out where they have
more chance of getting twisted or kinked.

~Mike


On Mar 20, 10:55 pm, Earl Grey earlg...@gmail.com wrote:
 Hi,

 yesterday, as I shifted my Sam with alacrity into the big chainring,
 the left silver shifter went past the limit of its range of motion
 determined by the derailer limit screw. I thought perhaps the cable
 had slipped, but then saw that the housing had burst in the loop
 coming from the bar-end shifter:

 http://www.flickr.com/photos/gernothuber/5545443939/

 This is 1.5 year old silver gray Shimano SIS SD housing purchased from
 Riv.

 I have never burst derailer housing, nor have I ever heard of it
 happening to others. Was this a manufacturing defect, low quality
 housing, or caused by UV damage, which the gray housing is presumably
 more subject to than black housing? Fortunately there remained enough
 tension on the cable that I could move the derailer cage by hand to
 shift and have it stay in place over the middle chainring.

 Has anyone had a similar experience? There is some sign of rust inside
 the housing, pointing towards a slow failure, probably starting with a
 crack in the gray housing. The gray outer covering on the tight loop
 leading to the rear derailer is also cracked. The bike is always
 parked in the car port, and is only subject to direct sunlight when I
 am riding or when it's parked outside the yoga studio or on errands
 (about 8 hours a week).

 I like the look of the silver, but if I have to replace the housing
 once a year, I'll probably go with black housing, of which I have a
 spool. Or should I go with silver gray *brake* housing, since I only
 use friction shifting anyway?

 Thanks,

 Gernot

 Cheers,

 Gernot

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[RBW] Re: Gray Shimano derailer cable housing busted

2011-03-21 Thread rperks
Gernot,
Brake housing is fine for friction shifting, even bette rif it is what
you have on hand.  I would guess that many here are old enough to
remember the slinky housing that came with Suntour barcons.  Even
super cheapo brake housing is probably beter than that.  Yes the
furrels wil be bigger but they just but up against the shifter and
should fit into your downtube stops OK.  FWIW I have been running
brake cable as shifte ron the Roadeo for a year and a half now, I
wanted to use the brass furrels all around

Rob
-
http://oceanaircycles.com/


On Mar 20, 10:55 pm, Earl Grey earlg...@gmail.com wrote:
 Hi,

 yesterday, as I shifted my Sam with alacrity into the big chainring,
 the left silver shifter went past the limit of its range of motion
 determined by the derailer limit screw. I thought perhaps the cable
 had slipped, but then saw that the housing had burst in the loop
 coming from the bar-end shifter:

 http://www.flickr.com/photos/gernothuber/5545443939/

 This is 1.5 year old silver gray Shimano SIS SD housing purchased from
 Riv.

 I have never burst derailer housing, nor have I ever heard of it
 happening to others. Was this a manufacturing defect, low quality
 housing, or caused by UV damage, which the gray housing is presumably
 more subject to than black housing? Fortunately there remained enough
 tension on the cable that I could move the derailer cage by hand to
 shift and have it stay in place over the middle chainring.

 Has anyone had a similar experience? There is some sign of rust inside
 the housing, pointing towards a slow failure, probably starting with a
 crack in the gray housing. The gray outer covering on the tight loop
 leading to the rear derailer is also cracked. The bike is always
 parked in the car port, and is only subject to direct sunlight when I
 am riding or when it's parked outside the yoga studio or on errands
 (about 8 hours a week).

 I like the look of the silver, but if I have to replace the housing
 once a year, I'll probably go with black housing, of which I have a
 spool. Or should I go with silver gray *brake* housing, since I only
 use friction shifting anyway?

 Thanks,

 Gernot

 Cheers,

 Gernot

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[RBW] Re: Gray Shimano derailer cable housing busted

2011-03-21 Thread doug peterson
Gernot:

It sounds like an unusual event that will probably not repeat.  One of
my touring buds had his housing split but he couldn't recall how long
they'd been in use; many years at the least.  My '03 Atlantis still
has the original shifter cable housings.  They have integral ferrules
at each end.

You're in a pretty intense sunlight  moisture environment compared to
most of the US.  Unless it's readily available locally, you guys might
want to agree on a color  stock up as long as you're ordering.
Funny, if you keep some parts around, the ones on your bike will live
for years.

dougP

On Mar 20, 10:55 pm, Earl Grey earlg...@gmail.com wrote:
 Hi,

 yesterday, as I shifted my Sam with alacrity into the big chainring,
 the left silver shifter went past the limit of its range of motion
 determined by the derailer limit screw. I thought perhaps the cable
 had slipped, but then saw that the housing had burst in the loop
 coming from the bar-end shifter:

 http://www.flickr.com/photos/gernothuber/5545443939/

 This is 1.5 year old silver gray Shimano SIS SD housing purchased from
 Riv.

 I have never burst derailer housing, nor have I ever heard of it
 happening to others. Was this a manufacturing defect, low quality
 housing, or caused by UV damage, which the gray housing is presumably
 more subject to than black housing? Fortunately there remained enough
 tension on the cable that I could move the derailer cage by hand to
 shift and have it stay in place over the middle chainring.

 Has anyone had a similar experience? There is some sign of rust inside
 the housing, pointing towards a slow failure, probably starting with a
 crack in the gray housing. The gray outer covering on the tight loop
 leading to the rear derailer is also cracked. The bike is always
 parked in the car port, and is only subject to direct sunlight when I
 am riding or when it's parked outside the yoga studio or on errands
 (about 8 hours a week).

 I like the look of the silver, but if I have to replace the housing
 once a year, I'll probably go with black housing, of which I have a
 spool. Or should I go with silver gray *brake* housing, since I only
 use friction shifting anyway?

 Thanks,

 Gernot

 Cheers,

 Gernot

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[RBW] Re: Gray Shimano derailer cable housing busted

2011-03-21 Thread Philip Williamson
On Mar 21, 2:28 am, omnigrid omnig...@gmail.com wrote:
 I'd replace derailleur cables/housing more often than 1.5 years. I change
 mine two or three times a year.

I'll send you my address, and you can mail me the takeoffs! :^)
If only I could remember who it was who said they throw their Marathon
Supremes away after three flats...

I only have one bike with derailler cables, but they've been on for 3
or 4 years, and the ones before that outlasted the shifters (6 years).
Mountain bike - mud, sun, freezing cold. Rain.

I'm of the mindset that if I can remember buying it, it's new.

 Philip

 Philip Williamson
www.biketinker.com

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