Fuck up friday

[seanile]

LOL.

Every day is FUF for us newbies.

but i didn't fuck up tonight! ok, maybe i did, i put a small hole in a tube in a verrryyy tight spot. but i filled it!

[duanedr]

I brazed the BB shell to the ST and then as I was getting ready to braze on the DT, I checked to make sure the BB was facing the right direction by testing it with a fixed BB cup. It went in far enough that I convinced myself that I had the BB shell on backwards despite the vent for the DT being present and facing in the right direction. So, what do I do? Yep, drill another vent hole facing the wrong direction and braze on the DT/HT assembly. It's at this point that I usually do the facing and when I threw my facing tool at it, I realized I had it right to begin with. I made a little bi-laminate tail covering the vent hole between the chainstays. After all of these mistakes, though, I'm convinced the next one will be perfect!

I have been considering purchasing a 12x36 lathe (just because machinery is so cool) but I saw one picture of an accident and completely reconsidered the idea.

stay safe folks...

[Clockwork]

I even wondered why it didn't fit in the bender as normal. Now it's a chainstay.

[jclay]

Thank you, fellas....I feel a little better now.

[abbeyQ]

Here's my fuck-up story from many years ago. I had a part in this disaster but wasn't responsible, which meant I wasn't the one that got fired.

My first welding job was working in a pressure vessel shop outside of Tulsa. We built heat exchangers for the power generation industry. Everything from outdated coal burners, prototype nature gas units to nuclear. We built a fair number of feed water heaters that acted as a pre heater for water headed to the boiler. Some of these were relatively small and this one was the biggest the company had ever built. It was only ~50 feet long and 6 feet in diameter but it had a 3.5" thick shell and the tube sheet was 38" inches thick. Onto that tube sheet we had to weld a hemispherical head. That weld joint had an odd bevel shape where the sides were almost parallel (20* included iirc). So imagine a seem that was 8" deep, 6" wide and runs the circumference of a 6' diameter shell. Going to take a while to weld that up. So here's where the disaster starts. We had a weld engineer on staff and he decided that these two barrels (2000# each) of weld filler were acceptable to weld this. He wanted to get rid of it and save the company some money. We all questioned him because it wasn't to the letter of the weld procedure but in the end he's the weld engineer. It takes approx 48 hours to weld that joint using a dual wire submerged arc setup. Running a combined 1400 amps of power through two electrodes. All is done and the x-ray shoots clean. Then the customers contracted inspector shows up as was common. He starts looking through everything and notices we used a different filler. He IS NOT HAPPY about this. A couple days go by while some engineers go back and forth with what to do. Call is made to cut it all out and start over. Whoops! It took another 2 days to cut it all out with a carbon arc and get it prepped to re-weld. My lead man wound up taking a grinding wheel to the face in the process and got a dozen stitches. So the tally of damages was ~3500 pounds of wasted weld filler, one weld engineer, one ER visit fir a dozen stitches, a weeks worth of work and lord knows how much money.

Kind of put's things in perspective.

Here's a cut away of what these things looked like. The solid band at the near end is the weld seem I'm talking about.
heat-exchanger-feedwater-heater-2.jpg

[steve garro]

Kind of put's things in perspective.

heat-exchanger-feedwater-heater-2.jpg

Buddy of mine works in the shop where they do whole airliner wings in one shot, the pre-forms flash out when it hit the right temp, in a vacuum - do you ever fuck one up I ask - yep…….millions lost, someone gets fired, but yep.

- Garro

[bambuko]

What a pleasure it is to partake in the forum where good old anglo-saxon lingo is acceptable
and no one is worrying about corrupting the little ones.

In the immortal words of Billy Conolly:

... there is going to be some swearing here tonight, if you don't like it fuck off...

I am enjoying the stories as well - thank you!

[Eric Estlund]

[Mike Mcdermid]

What a pleasure it is to partake in the forum where good old anglo-saxon lingo is acceptable
and no one is worrying about corrupting the little ones.

In the immortal words of Billy Conolly:


I am enjoying the stories as well - thank you!

who's been swearing.....MODS

[steve garro]

Or……..

Beard on King Tut’s Mask Snapped Off, Glued Back On — History in the Headlines


- Garro.

[Eric Estlund]

Makes scrapping a tube (or bike, for that matter) seem like a non event, eh?

[Mike Mcdermid]

Or……..

Beard on King Tut’s Mask Snapped Off, Glued Back On — History in the Headlines


- Garro.

NO WAY ....Is it wrong to say thats a f"** up of biblical proprtions

[ericpmoss]

Well, if you had positioned your boss more strategically, that problem would have taken care of itself...

[Mike Mcdermid]

the guy who makes these said it only cost a few quid to fix in terms of monumental fuck ups it wasn't so expensive

[Eric Estlund]

Wikipedia tells me:
"Repairs to the satellite cost $135 million. Lockheed Martin agreed to forfeit all profit from the project to help pay for repair costs; they later took a $30 million charge relating to the incident. The remainder of the repair costs were paid by the United States government"

In the realm of megacorp it's not huge, but its still a decent number.


Anyone have any guesses on the total costs to fix the litney of screw ups in Bostons Big Dig? That's moving on a big B "illion" (plus), right?

[Mike Mcdermid]

Wikipedia tells me:
"Repairs to the satellite cost $135 million. Lockheed Martin agreed to forfeit all profit from the project to help pay for repair costs; they later took a $30 million charge relating to the incident. The remainder of the repair costs were paid by the United States government"

In the realm of megacorp it's not huge, but its still a decent number.

The NASA man said they used the spares from the other ones

http://www.nasa.gov/pdf/65776main_noaa_np_mishap.pdf blames the afternoon shift for being a bit silly

[Eric Estlund]

"Errors were also made by other team
members, who were narrowly focused on their individual tasks and did not notice or consider the
state of the hardware or the operation outside of those tasks. "

That lesson can be applied to what we're up to.

[Clockwork]

Sometimes it's about how you fix the fuck up.

[Todd Mosley]

Minor: I was too bossy to the brake bridge
image-4133412918.jpg

Major: I made the chainstays too short for the tire to clear the dérailleur AND and spaced the stays out too far out too far. It will clear a 3" t but no dimple would give enough clearance for the chainrings. I cut out half the chainstay and brazed in a plate. Bonus: this was the second set of set of stays - the first pair was too short too.

image-354432445.jpg

image-2636791791.jpg

I scrapped the frame.

[steve garro]

I scrapped the frame.

Good call!


- Garro.