Fatigue Life of Aluminum

On Monday, July 24, 2017 at 6:09:28 AM UTC-7, AMuzi wrote:
On 7/24/2017 4:49 AM, wrote:
Al cookware is highly suspect for causing Alzheimers


Like the 'phillpis curve' and other fantasies of the 1970s,
that was roundly debunked years ago.

what are some others?

On Monday, July 24, 2017 at 7:27:28 AM UTC-7, Frank Krygowski wrote:
On 7/23/2017 9:52 PM, jbeattie wrote:
On Sunday, July 23, 2017 at 6:45:12 PM UTC-7, jbeattie wrote:
The fatigue life of aluminum is

Damn, posted prematurely. But the answer is 12 years. My Cannondale CX qua commuter bike bit the dust.

Back in 1978 or so, I designed and made my own handlebar bag. The bags
I had at the time had a 1/4" steel hanger frame that looped under the
stem and over the handlebar.

I decided to try an aluminum hanger frame on mine. I used a 3/8" rod of
2024, annealed it, bent it into the pretty contorted shape, then heat
treated it again. I'm sure it saved me as much as an ounce.

I wondered how soon the aluminum would fatigue. But it's been fine for
40 years now.

Time to go on a buying spree for a fast commuter.

Isn't that an oxymoron?

On Monday, July 24, 2017 at 10:01:22 AM UTC-7, jbeattie wrote:
On Monday, July 24, 2017 at 7:27:28 AM UTC-7, Frank Krygowski wrote:
On 7/23/2017 9:52 PM, jbeattie wrote:
On Sunday, July 23, 2017 at 6:45:12 PM UTC-7, jbeattie wrote:
The fatigue life of aluminum is

Damn, posted prematurely. But the answer is 12 years. My Cannondale CX qua commuter bike bit the dust.

Back in 1978 or so, I designed and made my own handlebar bag. The bags
I had at the time had a 1/4" steel hanger frame that looped under the
stem and over the handlebar.

I decided to try an aluminum hanger frame on mine. I used a 3/8" rod of
2024, annealed it, bent it into the pretty contorted shape, then heat
treated it again. I'm sure it saved me as much as an ounce.

I wondered how soon the aluminum would fatigue. But it's been fine for
40 years now.

Time to go on a buying spree for a fast commuter.

Isn't that an oxymoron?

I'm having a real problem with messages being sent involuntarily! I like quick commuters that I can take home through the hills without feeling like I'm dragging a boat anchor. I don't use panniers.

The Cannondale CX was pretty robust, but after 12 years of daily commuting with a lot of out of the saddle climbing and general thrashing, the chain stay gave up. I'll see what the warranty guys will do for me today. The problem with getting a replacement Cannondale is that none of their bikes have threaded BBs, which are making a comeback with some other manufacturers. I'd probably be fine with a BB30 or PF30, but I like the idea of cheap and easy BBs.

-- Jay Beattie.

On Monday, July 24, 2017 at 9:46:39 AM UTC-4, wrote:
On Monday, July 24, 2017 at 2:49:44 AM UTC-7, wrote:
Al cookware is highly suspect for causing Alzheimers

Yeah and the fact that Froome is a good rider proves that he is doping.

I doahn know what IT proves but serial wins needs descriptive analysis for our entertainment ...anyone know of cycle journalism in this area ?

On Monday, July 24, 2017 at 9:09:28 AM UTC-4, AMuzi wrote:
On 7/24/2017 4:49 AM, wrote:
Al cookware is highly suspect for causing Alzheimers


Like the 'phillpis curve' and other fantasies of the 1970s,
that was roundly debunked years ago.

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

Al leaches

http://scholar.google.com/scholar?hl...%2C10&as_sdtp=

need BPA bottles ?

or Teflon particles lodged in your intestines ?

drink heavy cream with morning coffee ?

On 2017-07-24 09:25, Doug Landau wrote:
On Monday, July 24, 2017 at 6:09:28 AM UTC-7, AMuzi wrote:
On 7/24/2017 4:49 AM, wrote:
Al cookware is highly suspect for causing Alzheimers


Like the 'phillpis curve' and other fantasies of the 1970s,
that was roundly debunked years ago.

what are some others?


The man-made ice age, for example. I still remember that us kids got
quite scared about that. No it's become man-made global warming. Oh
wait, no, the last iteration is global change. Wot nonsense.

--
Regards, Joerg

http://www.analogconsultants.com/

On 2017-07-24 06:18, David Scheidt wrote:
John B. Slocomb wrote:
:On Sun, 23 Jul 2017 18:45:08 -0700 (PDT), jbeattie
wrote:

:The fatigue life of aluminum is

:In 1965 or 6 I worked on DC-3's built in the 1930's. My mother had

Some of those DC-3s are still working. There's someone who put turbo
props on them, even. They're not pressurized, so they dont' suffer
from pressure cycles, and they structure is such that every part can
be replaced, without too much other changes.


The Goon still flies passengers:

https://www.youtube.com/watch?v=OJBpwXSz_io

--
Regards, Joerg

http://www.analogconsultants.com/

On Monday, July 24, 2017 at 1:18:56 PM UTC-4, jbeattie wrote:
On Monday, July 24, 2017 at 10:01:22 AM UTC-7, jbeattie wrote:
On Monday, July 24, 2017 at 7:27:28 AM UTC-7, Frank Krygowski wrote:
On 7/23/2017 9:52 PM, jbeattie wrote:
On Sunday, July 23, 2017 at 6:45:12 PM UTC-7, jbeattie wrote:
The fatigue life of aluminum is

Damn, posted prematurely. But the answer is 12 years. My Cannondale CX qua commuter bike bit the dust.

Back in 1978 or so, I designed and made my own handlebar bag. The bags
I had at the time had a 1/4" steel hanger frame that looped under the
stem and over the handlebar.

I decided to try an aluminum hanger frame on mine. I used a 3/8" rod of
2024, annealed it, bent it into the pretty contorted shape, then heat
treated it again. I'm sure it saved me as much as an ounce.

I wondered how soon the aluminum would fatigue. But it's been fine for
40 years now.

Time to go on a buying spree for a fast commuter.

Isn't that an oxymoron?

I'm having a real problem with messages being sent involuntarily! I like quick commuters that I can take home through the hills without feeling like I'm dragging a boat anchor. I don't use panniers.

The Cannondale CX was pretty robust, but after 12 years of daily commuting with a lot of out of the saddle climbing and general thrashing, the chain stay gave up. I'll see what the warranty guys will do for me today. The problem with getting a replacement Cannondale is that none of their bikes have threaded BBs, which are making a comeback with some other manufacturers. I'd probably be fine with a BB30 or PF30, but I like the idea of cheap and easy BBs.

-- Jay Beattie.

another cycle journalism op

12 years in Al....outstanding performance.

12 years ago what were your final choices ?

and today what models do you start with ?

as a Portlander there's a considerable head start on ground knowledge we other landers doahn have.

are you headed for a full custom or another off the rack robust road runner ?

at this pt, I'd be measured fersure

On Monday, July 24, 2017 at 12:00:37 PM UTC-7, Joerg wrote:
On 2017-07-24 06:18, David Scheidt wrote:
John B. Slocomb wrote:
:On Sun, 23 Jul 2017 18:45:08 -0700 (PDT), jbeattie
wrote:

:The fatigue life of aluminum is

:In 1965 or 6 I worked on DC-3's built in the 1930's. My mother had

Some of those DC-3s are still working. There's someone who put turbo
props on them, even. They're not pressurized, so they dont' suffer
from pressure cycles, and they structure is such that every part can
be replaced, without too much other changes.


The Goon still flies passengers:

https://www.youtube.com/watch?v=OJBpwXSz_io

You can absolutely guarantee that every piece of aluminum on that aircraft has been replaced.

The fatigue life of aluminum is

In 1965 or 6 I worked on DC-3's built in the 1930's. My mother had
aluminum cooking pots that she bought in ~1930 and lasted until her
death in 1992.


Is this scene accurate?
https://www.youtube.com/watch?v=SQRGuX_a5Fg