On Wed, 24 Jun 2015 10:02:03 -0500, "Terry Coombs"
wrote:

rangerssuck wrote:
On Tuesday, June 23, 2015 at 11:37:14 PM UTC-4, Larry Jaques wrote:
On Tue, 23 Jun 2015 15:05:27 -0700, Gunner Asch
wrote:

On Tue, 23 Jun 2015 16:39:06 -0500, Ignoramus9052
wrote:

On 2015-06-23, Gunner Asch wrote:
On Tue, 23 Jun 2015 08:47:22 -0500, Ignoramus9052
wrote:

On 2015-06-23, Gunner Asch wrote:
On Mon, 22 Jun 2015 23:02:16 -0500, Ignoramus8881
wrote:

http://igor.chudov.com/tmp/crankshaft.jpg


They abused the **** out of that crank. See the scoring on the
driven side?

No lube there in a long time.

Great observation!

This was from a punch press.

This is how most Chicago people use most equipment, in general.

i

Folks here seem to forget I work on and repair this sort of thing.
Machinery in machine shops Shrug. Its how Ive made my living for
20 yrs.

The folks that owned that press had zero maintainece. Even if
they were paying somebody. Having a crank that badly scored is
clear indication that sooner or later..somebody is gonna **** up
badly enough to bust that same crank.

What happened..die platten bolts break and the platten shift?
That wasnt a "crystalization" break of the crank..but a full
power ****up. Anyone get hurt when it all broke loose?

I have no idea, I simply observed that crankshaft on the ground, I
do not know the story. My guess is not much happened to the
operator.

i

The older machines often had a BIG assed flywheel on that end of the
crank along with the brake. I was called in years ago on a repair
job for a crank that had crystallized and that 8' flywheel had
suddenly gotten free. No one was badly hurt..but the flywheel was
found in the street blocking traffic....embedded in the side of
someone's van...about 400 feet from the press. It damaged
everything so badly on the press..and the shop wall..and the front
office wall..and the wall outside of the building, and a
motorcycle in the parking lot......that they simply scrapped the
press, moved in a new(er) press, called in the carpenters, tow
trucks and the insurance company (s)......

http://midwestmachy.com/wp-content/u...6/DSC_0012.jpg
Is an example of the type of press that failed....

This is the biggest reason most..most presses today have hydraulic
rams instead of a flywheel. While more complicated...when they fail
catastrophically...they usually stay together....

That's vaguely reminiscent of the trailer spare tire which got away
while traveling down the freeway in LoCal...

--
Find out what people will submit to, and you have found out the
exact amount of injustice and wrong which will be imposed on them.
--Frederick Douglass

In a shop where I worked, a somewhat amusing lunchtime activity was
taking clapped-out bearings, washing all the lube & dirt out of them,
holding the inner race between thumb & index finger, spinning them up
to some insane speed with an air gun & putting them down in the
parking lot. They'd go some pretty impressive distances.

In a (woodworking) shop where I worked , I epoxied a quarter to the
concrete floor . Asshole floor sweeper used my best chisel to take it up .
He did it on a day I was out ...

uh, with all due respect, I think that both of you share some
culpability on that one. d8-)

--
Ed Huntress