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#1
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NAHBS report by Anna Schwinn
https://bikerumor.com/2019/03/14/nah...le-show-guide/
-- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
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#2
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NAHBS report by Anna Schwinn
On 3/28/2019 11:50 AM, AMuzi wrote:
https://bikerumor.com/2019/03/14/nah...le-show-guide/ oops. Here's the link to actual tech: https://bikerumor.com/2019/03/27/nah...by-discipline/ -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#3
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NAHBS report by Anna Schwinn
On Thursday, March 28, 2019 at 12:03:08 PM UTC-5, AMuzi wrote:
On 3/28/2019 11:50 AM, AMuzi wrote: https://bikerumor.com/2019/03/14/nah...le-show-guide/ oops. Here's the link to actual tech: https://bikerumor.com/2019/03/27/nah...by-discipline/ -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 The thing that stuck out to me was the Overall Frame Material chart. Steel and titanium are dominant over carbon. And its perfectly logical too. An individual craftsman (North American HANDMADE Bicycle Show) can easily work with metals like steel and titanium. Cutting, grinding, filing, welding, brazing are all easily done by an individual without any complicated or expensive tools. Whereas carbon fiber generally requires far more technology and equipment to work with. Glue, fibers, presses, molds, bladders, ovens.. |
#4
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NAHBS report by Anna Schwinn
On Thu, 28 Mar 2019 12:13:02 -0700 (PDT), "
wrote: On Thursday, March 28, 2019 at 12:03:08 PM UTC-5, AMuzi wrote: On 3/28/2019 11:50 AM, AMuzi wrote: https://bikerumor.com/2019/03/14/nah...le-show-guide/ oops. Here's the link to actual tech: https://bikerumor.com/2019/03/27/nah...by-discipline/ -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 The thing that stuck out to me was the Overall Frame Material chart. Steel and titanium are dominant over carbon. And its perfectly logical too. An individual craftsman (North American HANDMADE Bicycle Show) can easily work with metals like steel and titanium. Cutting, grinding, filing, welding, brazing are all easily done by an individual without any complicated or expensive tools. Whereas carbon fiber generally requires far more technology and equipment to work with. Glue, fibers, presses, molds, bladders, ovens. Actually titanium is a bit finicky to weld. You need shielding gas, usually on both sides.. When I certified, admittedly many years ago, any color discoloration of the weld or parent material was reason to reject the weld. -- cheers, John B. |
#5
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NAHBS report by Anna Schwinn
On Thu, 28 Mar 2019 12:13:02 -0700 (PDT), "
wrote: On Thursday, March 28, 2019 at 12:03:08 PM UTC-5, AMuzi wrote: On 3/28/2019 11:50 AM, AMuzi wrote: https://bikerumor.com/2019/03/14/nah...le-show-guide/ oops. Here's the link to actual tech: https://bikerumor.com/2019/03/27/nah...by-discipline/ -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 The thing that stuck out to me was the Overall Frame Material chart. Steel and titanium are dominant over carbon. And its perfectly logical too. An individual craftsman (North American HANDMADE Bicycle Show) can easily work with metals like steel and titanium. Cutting, grinding, filing, welding, brazing are all easily done by an individual without any complicated or expensive tools. Whereas carbon fiber generally requires far more technology and equipment to work with. Glue, fibers, presses, molds, bladders, ovens. Actually titanium is a bit finicky to weld. You need shielding gas, usually on both sides.. When I certified, admittedly many years ago, any color discoloration of the weld or parent material was reason to reject the weld. -- cheers, John B. |
#7
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NAHBS report by Anna Schwinn
On Thu, 28 Mar 2019 19:25:40 -0500, AMuzi wrote:
On 3/28/2019 5:56 PM, wrote: On Thu, 28 Mar 2019 12:13:02 -0700 (PDT), " wrote: On Thursday, March 28, 2019 at 12:03:08 PM UTC-5, AMuzi wrote: On 3/28/2019 11:50 AM, AMuzi wrote: https://bikerumor.com/2019/03/14/nah...le-show-guide/ oops. Here's the link to actual tech: https://bikerumor.com/2019/03/27/nah...by-discipline/ -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 The thing that stuck out to me was the Overall Frame Material chart. Steel and titanium are dominant over carbon. And its perfectly logical too. An individual craftsman (North American HANDMADE Bicycle Show) can easily work with metals like steel and titanium. Cutting, grinding, filing, welding, brazing are all easily done by an individual without any complicated or expensive tools. Whereas carbon fiber generally requires far more technology and equipment to work with. Glue, fibers, presses, molds, bladders, ovens. Actually titanium is a bit finicky to weld. You need shielding gas, usually on both sides.. When I certified, admittedly many years ago, any color discoloration of the weld or parent material was reason to reject the weld. -- cheers, John B. Many ears ago standard Ti technique was in an argon booth. Now they just flow argon through the tubes during welding with an argon shielded arc. Actually when I qualified they had a Plexiglas box, say 1.5 ft on a side, The torch was inside and it had a pair of gloves attached so you could put your work inside the box, purge with argon and weld away. I had never welded titanium but as I passed my other welding certificate pieces the first day I had a wait for the other guy that was with me so I asked the test foreman if I could try the titanium. He said sure and the second piece I welded passed :-) Anyway, sometime later I was visiting a friend who worked at the depot and was bragging to him abut my titanium certification and he said that "over here" we weld with a normal TIG set and extra argon for a back flush. No magic box! Then he tells me that you can cut titanium with a normal gas cutting torch but you have to be careful to grind all the slag off before you weld. Yet another rude awakening that I didn't know everything :-) -- cheers, John B. |
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