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Stem recall



 
 
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  #11  
Old May 19th 17, 07:34 PM posted to rec.bicycles.tech
Andre Jute[_2_]
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Posts: 8,470
Default Stem recall

On Friday, May 19, 2017 at 2:34:02 PM UTC+1, wrote:
On Thursday, May 18, 2017 at 4:35:02 PM UTC-7, Andre Jute wrote:
On Thursday, May 18, 2017 at 11:49:16 PM UTC+1, AMuzi wrote:
On 5/18/2017 5:06 PM, [email protected] wrote:
On Thursday, May 18, 2017 at 11:36:53 AM UTC-7, AMuzi wrote:
https://drive.google.com/file/d/0B0Z...o1M3Q4Y3M/view

Produced 2007~2013. The interesting line is "may corrode and
fail". Not the usual, "may crack and fail". CPSC reports
exactly one incident with injury.

Profile is one of the best stems I've used. Corrode and fail?

In that this particular model is carbon-wrapped aluminum, I
suppose that's a galvanic corrosion effect.

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


Maybe. But galvanic between what and what? Surely carbon is inert. I think it more likely that there was inadequate adhesion, air got in, a further layer of aluminum's self-defense layer was formed, furthering delimitation, and presto, a failure. One. One failure doesn't get my heart rate up much.


Carbon is a conductor. And it isn't inert. Remember when resistors used to be made from carbon?


Yah, I didn't have my brain in gear before I engaged my keyboard. As a sailor, I actually used to know something about catalytic effects, which is why I avoided FRP back when I designed my City of Germiston and built it in molded wood instead. But I've given galvanic reaction only a few thoughts in between, mainly in connection with ultra-fi valve amps I designed and built, one set of which was specified for shipboard installation.

Andre Jute
Unlike the clowns who insist on being right all the time, and consequently know very little and have no friends, I make a new friend every time someone has to straighten out what I have forgotten I knew or, of course, never knew.
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  #12  
Old May 19th 17, 10:56 PM posted to rec.bicycles.tech
Andre Jute[_2_]
external usenet poster
 
Posts: 8,470
Default Stem recall

On Friday, May 19, 2017 at 7:23:38 PM UTC+1, Doug Landau wrote:

One stem is better than another...?


Of course. The best stems are the ones I have laid hands on to bless them with my rational magic. If you can't afford one of my magic stems, these, available to committed cyclists with really distinguished purple or platinum cards. are superior to all others:

* Gazelle Switch
https://duckduckgo.com/?q=Gazelle+Sw...ai=wJaHClHMaOk
This is a toollessly adjustable stem, which allows you to set the handlebars at any height, and to rotate the handlebars in the clamp. With the handlebars on my Gazelle Toulouse (a luxurious vakansiefiets or holiday tourer, basically an optioned-up Dutch commuter) set as low as they would go and rotated to put the grips on my North Road bars almost vertical so that my back was flat, on standard 38mm tyres I set a ton-up record, truck assisted of course (I'm only adding this obvious point for the benefit of morons like Frank Krygowski, who when I first reported the feat tried to make me out a liar, which is why I still kick that little man's slack arse every time I smell it). My Toulouse is he
http://coolmainpress.com/BICYCLING.html
Uno (Kalloy) makes a crude copy of the Switch that is generally carried by the bigger LBS but I can't seem to find a pic of it. Here's the Satori (made? branded?) version:
http://bicycletimesmag.com/userfiles/untitled-33.jpg

* n'lock
http://thorncyclesforum.co.uk/index.php?topic=3930.0
This stem unlocks the stem from the steerer tube, something like a car steering lock, and makes the bike unrideable, a very effective form of theft prevention. It saves carrying the weight of a U-lock and that tiresome business of bending over the bike and getting your hands dirty in its nether regions every time you lock or unlock your bike. Some n'lock kits come with optional parts to raise the handlebars, and some n'locks are adjustable. n'lock also sells a handlebar with a length of cable attached inside as an added disincentive to thieves, and various other lengths of cable for paranoid owners to lock up their wheels etc. All cables release with a single turn of the key on the stem. Photos of an installation and use at the link if you scroll down.

Andre Jute
Only the best is likely to be acceptable

  #13  
Old May 19th 17, 11:09 PM posted to rec.bicycles.tech
[email protected]
external usenet poster
 
Posts: 2,898
Default Stem recall

On Friday, May 19, 2017 at 11:23:38 AM UTC-7, Doug Landau wrote:
On Thursday, May 18, 2017 at 3:06:13 PM UTC-7, wrote:
On Thursday, May 18, 2017 at 11:36:53 AM UTC-7, AMuzi wrote:
https://drive.google.com/file/d/0B0Z...o1M3Q4Y3M/view

Produced 2007~2013. The interesting line is "may corrode and
fail". Not the usual, "may crack and fail". CPSC reports
exactly one incident with injury.
--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971


Profile is one of the best stems I've used. Corrode and fail?


One stem is better than another, failures aside?


Yes, the lighter one's are usually better designed and better built. The cheaper one's are a lot heavier and they do not fit the bar properly and can dent the handlebar. I never allowed them to do that but I wouldn't trust them.
  #14  
Old May 19th 17, 11:15 PM posted to rec.bicycles.tech
[email protected]
external usenet poster
 
Posts: 2,898
Default Stem recall

On Friday, May 19, 2017 at 2:56:51 PM UTC-7, Andre Jute wrote:
On Friday, May 19, 2017 at 7:23:38 PM UTC+1, Doug Landau wrote:

One stem is better than another...?


Of course. The best stems are the ones I have laid hands on to bless them with my rational magic. If you can't afford one of my magic stems, these, available to committed cyclists with really distinguished purple or platinum cards. are superior to all others:

* Gazelle Switch
https://duckduckgo.com/?q=Gazelle+Sw...ai=wJaHClHMaOk
This is a toollessly adjustable stem, which allows you to set the handlebars at any height, and to rotate the handlebars in the clamp. With the handlebars on my Gazelle Toulouse (a luxurious vakansiefiets or holiday tourer, basically an optioned-up Dutch commuter) set as low as they would go and rotated to put the grips on my North Road bars almost vertical so that my back was flat, on standard 38mm tyres I set a ton-up record, truck assisted of course (I'm only adding this obvious point for the benefit of morons like Frank Krygowski, who when I first reported the feat tried to make me out a liar, which is why I still kick that little man's slack arse every time I smell it). My Toulouse is he
http://coolmainpress.com/BICYCLING.html
Uno (Kalloy) makes a crude copy of the Switch that is generally carried by the bigger LBS but I can't seem to find a pic of it. Here's the Satori (made? branded?) version:
http://bicycletimesmag.com/userfiles/untitled-33.jpg

* n'lock
http://thorncyclesforum.co.uk/index.php?topic=3930.0
This stem unlocks the stem from the steerer tube, something like a car steering lock, and makes the bike unrideable, a very effective form of theft prevention. It saves carrying the weight of a U-lock and that tiresome business of bending over the bike and getting your hands dirty in its nether regions every time you lock or unlock your bike. Some n'lock kits come with optional parts to raise the handlebars, and some n'locks are adjustable. n'lock also sells a handlebar with a length of cable attached inside as an added disincentive to thieves, and various other lengths of cable for paranoid owners to lock up their wheels etc. All cables release with a single turn of the key on the stem. Photos of an installation and use at the link if you scroll down.

Andre Jute
Only the best is likely to be acceptable


Not to mention that better designs use four bolts to hold on the bar instead of two when a failure can dump you on your head. One time I tightened hell out of an old quill stem and then riding along I hit a good bump and the quill stem came completely loose - it was the kind with the angled locking piece so I assume it somehow stuck and the bump dislodged it. After that I only wanted use the Cinelli type with the expander.
  #15  
Old May 20th 17, 01:03 AM posted to rec.bicycles.tech
Doug Landau
external usenet poster
 
Posts: 1,221
Default Stem recall

On Friday, May 19, 2017 at 2:56:51 PM UTC-7, Andre Jute wrote:
On Friday, May 19, 2017 at 7:23:38 PM UTC+1, Doug Landau wrote:

One stem is better than another...?


Of course. The best stems are the ones I have laid hands on to bless them with my rational magic. If you can't afford one of my magic stems, these, available to committed cyclists with really distinguished purple or platinum cards. are superior to all others:

* Gazelle Switch
https://duckduckgo.com/?q=Gazelle+Sw...ai=wJaHClHMaOk
This is a toollessly adjustable stem, which allows you to set the handlebars at any height, and to rotate the handlebars in the clamp. With the handlebars on my Gazelle Toulouse (a luxurious vakansiefiets or holiday tourer, basically an optioned-up Dutch commuter) set as low as they would go and rotated to put the grips on my North Road bars almost vertical so that my back was flat, on standard 38mm tyres I set a ton-up record, truck assisted of course (I'm only adding this obvious point for the benefit of morons like Frank Krygowski, who when I first reported the feat tried to make me out a liar, which is why I still kick that little man's slack arse every time I smell it). My Toulouse is he
http://coolmainpress.com/BICYCLING.html
Uno (Kalloy) makes a crude copy of the Switch that is generally carried by the bigger LBS but I can't seem to find a pic of it. Here's the Satori (made? branded?) version:
http://bicycletimesmag.com/userfiles/untitled-33.jpg

* n'lock
http://thorncyclesforum.co.uk/index.php?topic=3930.0
This stem unlocks the stem from the steerer tube, something like a car steering lock, and makes the bike unrideable, a very effective form of theft prevention. It saves carrying the weight of a U-lock and that tiresome business of bending over the bike and getting your hands dirty in its nether regions every time you lock or unlock your bike. Some n'lock kits come with optional parts to raise the handlebars, and some n'locks are adjustable. n'lock also sells a handlebar with a length of cable attached inside as an added disincentive to thieves, and various other lengths of cable for paranoid owners to lock up their wheels etc. All cables release with a single turn of the key on the stem. Photos of an installation and use at the link if you scroll down.

Andre Jute
Only the best is likely to be acceptable


I'd be afraid of these. Seems like the stem already experiences more than its fair share of failures.
  #16  
Old May 20th 17, 03:18 AM posted to rec.bicycles.tech
Andre Jute[_2_]
external usenet poster
 
Posts: 8,470
Default Stem recall

On Saturday, May 20, 2017 at 1:03:36 AM UTC+1, Doug Landau wrote:
On Friday, May 19, 2017 at 2:56:51 PM UTC-7, Andre Jute wrote:
On Friday, May 19, 2017 at 7:23:38 PM UTC+1, Doug Landau wrote:

One stem is better than another...?


Of course. The best stems are the ones I have laid hands on to bless them with my rational magic. If you can't afford one of my magic stems, these, available to committed cyclists with really distinguished purple or platinum cards. are superior to all others:

* Gazelle Switch
https://duckduckgo.com/?q=Gazelle+Sw...ai=wJaHClHMaOk
This is a toollessly adjustable stem, which allows you to set the handlebars at any height, and to rotate the handlebars in the clamp. With the handlebars on my Gazelle Toulouse (a luxurious vakansiefiets or holiday tourer, basically an optioned-up Dutch commuter) set as low as they would go and rotated to put the grips on my North Road bars almost vertical so that my back was flat, on standard 38mm tyres I set a ton-up record, truck assisted of course (I'm only adding this obvious point for the benefit of morons like Frank Krygowski, who when I first reported the feat tried to make me out a liar, which is why I still kick that little man's slack arse every time I smell it). My Toulouse is he
http://coolmainpress.com/BICYCLING.html
Uno (Kalloy) makes a crude copy of the Switch that is generally carried by the bigger LBS but I can't seem to find a pic of it. Here's the Satori (made? branded?) version:
http://bicycletimesmag.com/userfiles/untitled-33.jpg

* n'lock
http://thorncyclesforum.co.uk/index.php?topic=3930.0
This stem unlocks the stem from the steerer tube, something like a car steering lock, and makes the bike unrideable, a very effective form of theft prevention. It saves carrying the weight of a U-lock and that tiresome business of bending over the bike and getting your hands dirty in its nether regions every time you lock or unlock your bike. Some n'lock kits come with optional parts to raise the handlebars, and some n'locks are adjustable. n'lock also sells a handlebar with a length of cable attached inside as an added disincentive to thieves, and various other lengths of cable for paranoid owners to lock up their wheels etc. All cables release with a single turn of the key on the stem. Photos of an installation and use at the link if you scroll down.

Andre Jute
Only the best is likely to be acceptable


I'd be afraid of these. Seems like the stem already experiences more than its fair share of failures.


The Switch is the standard fitment to millions of Gazelle. We'd have heard by now if it were subject to any failure at all. The n'lock is obsessive Swiss engineering and there are zero reports of failure that I'm aware of; the only complaint about it I've ever heard of I made myself, and it was about a small grease smear on it when new... Hey, actually there was another complaint about the n'lock, that it was so well made, it was hard to slide the parts together on the stiff factory grease.

Andre Jute
I dunno what you're talking about, Doug. Andrew Muzi probably started this thread in the hope that someone would point out that one failure isn't a winter migration of Canada geese. I don't recommend components with even one failure.
 




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