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Wrench Physics Question

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  Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 06:47 +0000
    Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 08:09 -0500
      Re: Wrench Physics Question Sam Wormley <swormley1@gmail.com> - 2015-10-30 08:50 -0500
        Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 17:10 +0000
          Re: Wrench Physics Question gilber34 <fafa@invalid.com> - 2015-10-30 20:54 -0500
          Re: Wrench Physics Question Sam Wormley <swormley1@gmail.com> - 2015-10-30 21:35 -0500
      Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 17:08 +0000
      Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 17:23 +0000
        Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 12:44 -0500
          Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 17:58 +0000
          Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 18:08 +0000
            Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 15:37 -0500
              Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 20:42 +0000
                Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 15:51 -0500
          Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 18:14 +0000
            Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 15:40 -0500
              Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 21:13 +0000
                Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 16:29 -0500
                  Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 21:59 +0000
                    Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 17:15 -0500
                      Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 22:31 +0000
                        Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 21:09 -0500
                          Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-31 02:22 +0000
                  Re: Wrench Physics Question xxein1@att.net - 2015-10-30 20:27 -0700
                    Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-31 04:23 +0000
                      Re: Wrench Physics Question xxein1@att.net - 2015-10-31 07:16 -0700
                    Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-11-01 15:27 -0600
                      Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-11-01 23:16 +0000
                        Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-11-02 08:58 -0600
                          Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-11-02 20:00 +0000
                            Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-11-02 14:27 -0600
                Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 21:33 +0000
                  Re: Wrench Physics Question Sam Wormley <swormley1@gmail.com> - 2015-10-30 21:19 -0500
                    Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-31 02:58 +0000
    Re: Wrench Physics Question "nuny@bid.nes" <Alien8752@gmail.com> - 2015-10-30 12:41 -0700
      Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 19:56 +0000
        Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 20:21 +0000
          Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 20:39 +0000
            Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 21:13 +0000
        Re: Wrench Physics Question Tom P <werotizy@freent.dd> - 2015-10-31 22:40 +0100
      Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 20:25 +0000
        Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 20:40 +0000
          Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 21:04 +0000
            Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 16:23 -0500
              Re: Wrench Physics Question noTthaTguY <abu.kuanysh05@gmail.com> - 2015-10-30 14:27 -0700
                Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 22:28 +0000
                  Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 21:10 -0500
                    Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-31 02:25 +0000
                      Re: Wrench Physics Question xxein1@att.net - 2015-10-30 20:45 -0700
                      Re: Wrench Physics Question dvus <dven1@adelphia.net> - 2015-11-01 07:53 -0500
                        Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-11-02 01:09 +0000
                          Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-11-02 09:19 -0600
                            Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-11-02 19:43 +0000
                              Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-11-02 14:16 -0600
              Re: Wrench Physics Question Mahipal <mahipal7638@gmail.com> - 2015-10-30 15:56 -0700
            Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 21:38 +0000
        Re: Wrench Physics Question "nuny@bid.nes" <Alien8752@gmail.com> - 2015-11-01 22:27 -0800
    Re: Wrench Physics Question xxein1@att.net - 2015-10-30 17:55 -0700
      Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-31 01:33 +0000
        Re: Wrench Physics Question xxein1@att.net - 2015-10-30 20:34 -0700
      Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-31 02:05 +0000
        Re: Wrench Physics Question xxein1@att.net - 2015-10-30 20:37 -0700
    Re: Wrench Physics Question xxein1@att.net - 2015-10-30 18:00 -0700
    Re: Wrench Physics Question xxein1@att.net - 2015-10-30 18:03 -0700
      Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-31 01:24 +0000
    Re: Wrench Physics Question Lofty Goat <rlwatkins@gmail.com> - 2015-10-31 18:44 -0500
      Re: Wrench Physics Question Sam Wormley <swormley1@gmail.com> - 2015-10-31 19:35 -0500
      Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-11-01 01:33 +0000
        Re: Wrench Physics Question benj <none@gmail.com> - 2015-10-31 23:21 -0400
          Re: Wrench Physics Question "nuny@bid.nes" <Alien8752@gmail.com> - 2015-11-01 04:35 -0800
      Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-11-01 23:01 +0000

Page 4 of 4 — ← Prev page 1 2 3 [4]

#529331

On Fri, 30 Oct 2015 17:55:07 -0700, xxein1 wrote:

> 
> Your next question should be why boxed end wrenches have
> the box tilted upward from the shaft.
>

That's just for clearance, like putting a universal joint extension
on a socket wrench.

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#529374

On Friday, October 30, 2015 at 10:05:26 PM UTC-4, Fabian Russell wrote:
> On Fri, 30 Oct 2015 17:55:07 -0700, xxein1 wrote:
> 
> > 
> > Your next question should be why boxed end wrenches have
> > the box tilted upward from the shaft.
> >
> 
> That's just for clearance, like putting a universal joint extension
> on a socket wrench.

xxein:  I could claim apples and oranges but I know what you mean.

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#529305

On Friday, October 30, 2015 at 2:48:45 AM UTC-4, Fabian Russell wrote:
> C'mon, physics junkies.  It's time to discuss -- if you
> can.
> 
> Here is an image of a common open-end wrench:
> 
> http://s8.postimg.org/em76bn2k5/wrench.png
> 
> Note how the head, or gripper, of the wrench is set at an angle
> to the handle axis.
> 
> Thus, there are two different possible directions of rotation
> that can be used with either end to tighten (or loosen) a fastening
> nut or bolt.
> 
> Why is the wrench designed in this way?
> 
> Is one rotation direction preferable to the other?  If so, why?

xxein: As an after thought - why didn't you take a 100% vertical picture of the wrench?  The forces would have been more easily imagined.  Just picky.

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#529306

On Friday, October 30, 2015 at 2:48:45 AM UTC-4, Fabian Russell wrote:
> C'mon, physics junkies.  It's time to discuss -- if you
> can.
> 
> Here is an image of a common open-end wrench:
> 
> http://s8.postimg.org/em76bn2k5/wrench.png
> 
> Note how the head, or gripper, of the wrench is set at an angle
> to the handle axis.
> 
> Thus, there are two different possible directions of rotation
> that can be used with either end to tighten (or loosen) a fastening
> nut or bolt.
> 
> Why is the wrench designed in this way?
> 
> Is one rotation direction preferable to the other?  If so, why?

xxein:  By the way, this a mechanical issue, not physics as is your wont.

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#529315

On Fri, 30 Oct 2015 18:03:45 -0700, xxein1 wrote:

> 
> xxein:  By the way, this a mechanical issue, not physics
>

????

Mechanics is a sub-discipline of physics.

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#529563

On Fri, 30 Oct 2015 06:47:36 +0000, Fabian Russell wrote:

> C'mon, physics junkies.  It's time to discuss -- if you can.
> 
> Here is an image of a common open-end wrench:
> 
> http://s8.postimg.org/em76bn2k5/wrench.png
> 
> Note how the head, or gripper, of the wrench is set at an angle to the
> handle axis.

They all are.

> Thus, there are two different possible directions of rotation that can
> be used with either end to tighten (or loosen) a fastening nut or bolt.
> 
> Why is the wrench designed in this way?

Ever actually used a crescent wrench?  The ends are angled to allow more 
choices in orienting the wrench when attaching it to a nut or bolt-head.  
In tight spaces one can flip the wrench over when it's opposite end bumps 
into some obstacle.

> Is one rotation direction preferable to the other?  If so, why?

This is a weird question.  Have you ever actually *used* wrenches much?

They're made that way because it makes them more useful to the people who 
have to use them regularly.

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#529586

On 10/31/15 6:44 PM, Lofty Goat wrote:
> Ever actually used a crescent wrench?  The ends are angled to allow more
> choices in orienting the wrench when attaching it to a nut or bolt-head.
> In tight spaces one can flip the wrench over when it's opposite end bumps
> into some obstacle.


   Exactly. Assuming enough room to rotate a hex bolt or nut 30°, then an
   offset of 15° in the open end wrench will allow (flipping the wrench
   over) an additional 30° of rotation totaling 60°.

   An excellent design using a 15° offset in open end wrenches, for hex
   bolts and nuts. Simple mathematics really.




-- 

sci.physics is an unmoderated newsgroup dedicated
to the discussion of physics, news from the physics
community, and physics-related social issues.

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#529592

On Sat, 31 Oct 2015 18:44:11 -0500, Lofty Goat wrote:

> 
> This is a weird question.  Have you ever actually *used* wrenches much?
> 

Oh yeah.  I had a 4-inch open-end wrench.  It was a big, heavy sucker.

I encountered someone with a very bad attitude toward scientific inquiry
so I bashed him in the head with it.

It was rusty anyway.

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#529614

On 10/31/2015 09:33 PM, Fabian Russell wrote:
> On Sat, 31 Oct 2015 18:44:11 -0500, Lofty Goat wrote:
>
>>
>> This is a weird question.  Have you ever actually *used* wrenches much?
>>
>
> Oh yeah.  I had a 4-inch open-end wrench.  It was a big, heavy sucker.
>
> I encountered someone with a very bad attitude toward scientific inquiry
> so I bashed him in the head with it.
>
> It was rusty anyway.

Which raises the question: Ever see those huge wrenches in some big 
industrial plant? I mean they are like a meter long and made from 
drop-forged steel about an inch thick! I can't even lift one off the 
ground, which makes me wonder just what kind of gorillas they hire to 
use tools like that?

Now I do own a gigantic pipe wrench but then common pipes do get to be 
larger diameters. It looks just like a huge industrial wrench but it's 
actually made out of aluminum and quite light and usable by normal human 
beings.

-- 

       ___           ___           ___            ___
      /\  \         /\  \         /\__\          /\  \
     /::\  \       /::\  \       /::|  |         \:\  \
    /:/\:\  \     /:/\:\  \     /:|:|  |     ___ /::\__\
   /::\~\:\__\   /::\~\:\  \   /:/|:|  |__  /\  /:/\/__/
  /:/\:\ \:|__| /:/\:\ \:\__\ /:/ |:| /\__\ \:\/:/  /
  \:\~\:\/:/  / \:\~\:\ \/__/ \/__|:|/:/  /  \::/  /
   \:\ \::/  /   \:\ \:\__\       |:/:/  /    \/__/
    \:\/:/  /     \:\ \/__/       |::/  /
     \::/__/       \:\__\         /:/  /
      ~~            \/__/         \/__/

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#529669

On Saturday, October 31, 2015 at 8:21:56 PM UTC-7, benj wrote:
> On 10/31/2015 09:33 PM, Fabian Russell wrote:
> > On Sat, 31 Oct 2015 18:44:11 -0500, Lofty Goat wrote:
> >
> >>
> >> This is a weird question.  Have you ever actually *used* wrenches much?
> >>
> >
> > Oh yeah.  I had a 4-inch open-end wrench.  It was a big, heavy sucker.
> >
> > I encountered someone with a very bad attitude toward scientific inquiry
> > so I bashed him in the head with it.
> >
> > It was rusty anyway.
> 
> Which raises the question: Ever see those huge wrenches in some big 
> industrial plant? I mean they are like a meter long and made from 
> drop-forged steel about an inch thick! I can't even lift one off the 
> ground, which makes me wonder just what kind of gorillas they hire to 
> use tools like that?

  I've handled them by myself. CAREFULLY. They're typically in the fifty to sixty pound range. I'm 6' 0" and 145 lbs (of rawhide and whalebone, as they never really used to say). With proper training and practice (and steel-toed Red Wing boots just in case) it's easier and safer than you might think.

  BTW I work here:

http://www.norplexinc.com/

  I'm in production- not the offices. My "desk" runs on 3-phase 440VAC and can hit 450 Fahrenheit depending on what resin we're using that day.

> Now I do own a gigantic pipe wrench but then common pipes do get to be 
> larger diameters. It looks just like a huge industrial wrench but it's 
> actually made out of aluminum and quite light and usable by normal human 
> beings.

  It's got replaceable steel jaws though, doesn't it?

  The forged steel monsters you mentioned are also being phased out in favor of steel-jawed aluminum. They're more expensive but much safer to use.

  Since I'm now in my 60's I don't mind the change at all. ;>)


  Mark L. Fergerson

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#529787

On Sat, 31 Oct 2015 18:44:11 -0500, Lofty Goat wrote:

> 
> This is a weird question.  Have you ever actually *used* wrenches much?
> 

Hey, Mr. High Horse.

I would like to know the name of your employer.  In particular,
I would like to know the name of your immediate supervisor.

Why?  Because I want to show him/her a copy of your Usenet posting.
It reveals a certain unproductiveness and uninquisitiveness that
are not at all desirable in any modern employee.  Hopefully, he/she
will terminate you on the spot.

Yes, hopefully.  But I doubt it would happen.  The American managerial
class is populated only by idiots of low integrity.

But anyway, Mr. High Horse seems to think that simple tools are
indeed simple and not worthy of ones serious consideration.

Well, Mr. High Horse, let's consider the (seemingly) ultra-simple
screw head.

There are different types of screw head.  A common type is the
"Phillips" head.  Another common type is the "Torx" head.

Do you know the difference between a Phillips and a Torx head,
beside the appearance?

Well, a Phillips head is designed "cam out," that is, too much
applied torque will literally push the driving bit out of the head.
A Torx head is designed never to "cam out."

Would you care to explain, Mr. High Horse, in terms of force vectors,
just how these respective designs lead to the respective behaviors?

But Mr. High Horse feels that such trivialities are not worth
serious attention.  Too bad.

How about the difference between a recessed hex head (i.e. for
fitting an Allen wrench) and a star-lobed head?  Would you car
to explain, in terms of forces, why one is preferable over the
other?

But again, Mr. High Horse can't be bothered with such trivial
nonsense.

Simple tools are far from simple.  You intellectual shallowness
creates a severe prejudice.

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