[Vwdiesel] Minor tragedies--A4 suspension work

[Patrick Dolan]

Not quite:  F = m * a   In this equation, Force and mass are directly proportional at 1:1 ratio.  a (acceleration in M/sec/sec) from that one further calculates that for change in the velocity (m/sec), there you get a second order for acceleration when you resolve for acceleration (since distance will be approximately the same....i.e. how much the arm and hammer compress).

The 1/2 part comes from solving for that distance:  s = 1./2 * a * t^2

In other words:  three times the hammer size = three times the force delivered in blow.  Three times the velocity = NINE times the force delivered in blow.

----- Original Message -----
From: mark shepherd <mark at shepher.fsnet.co.uk>
Date: Monday, February 28, 2011 7:14 am
Subject: Re: [Vwdiesel] Minor tragedies--A4 suspension work

> Power  is 1/2 mass times velocity squared or something
> { minus 'diminishing accuracy' squared as you hit something 
> completely 
> unintended, and delicate due to the extra ooomph}
> 
> Mark
> 
> 
> 
> ----- Original Message ----- 
> From: "Patrick Dolan" <pmdolan at sasktel.net>
> To: "Erik Lane" <eriklane at gmail.com>
> Cc: <Vwdiesel at vwfans.com>
> Sent: Monday, February 28, 2011 12:59 PM
> Subject: Re: [Vwdiesel] Minor tragedies--A4 suspension work
> 
> 
> >
> > Usually bigger, but the physics of it indicate that velocity is 
> more 
> > important (force delivered increases linearly for mass, but the 
> second 
> > order of value for velocity).  In other words, swing twice as 
> fast, get 
> > four times as much force delivered.  Skill and manual dexterity 
> again 
> > becomes the key ingredient.
> >
> > ----- Original Message -----
> > From: Erik Lane <eriklane at gmail.com>
> > Date: Sunday, February 27, 2011 6:48 pm
> > Subject: Re: [Vwdiesel] Minor tragedies--A4 suspension work
> >
> >> Actually, in my experience it's usually when you don't have a big
> >> enoughhammer that problems happen. If you have a big enough hammer
> >> then you don't
> >> have to force things as much, so you can be more in control while
> >> actuallygetting the job done. Right tool for the job and all
> >> that... :)
> >>
> >> Although sometimes when I'm reaching for the monster *BIGGER*
> >> hammer then it
> >> truly is out of frustration and I'm just planning to beat the snot
> >> out of
> >> something. But in general if you have a big enough hammer to start
> >> with then
> >> you can actually go easier on it while still getting it done, is
> >> all I'm
> >> trying to say.
> >>
> >> Erik
> >>
> >> On Sun, Feb 27, 2011 at 3:17 PM, Shalyn Shourds
> >> <sshourds at flash.net> wrote:
> >>
> >> > Wow, sorry.  I'll have to go back and look at what I wrote.  I
> >> must have
> >> > sounded like I was about to jump off a bridge.
> >> >
> >> > I meant just to ask if the axle just pushes out of the
> >> bearing/hub like on
> >> > A2 cars or if it has to be pressed out.  Usually I do memorize
> >> appropriate> Bentley section, but for this job it's a bad as the
> >> Chitlins [sic] manual.
> >> >
> >> > Honest.  I don't mind working on VWs.  I think it's suspensions
> >> I hate. I
> >> > don't have a lot of upper body strength and it's always a
> >> beatdown fighting
> >> > the various parts under tension.  Speaking of:  I've tried the
> >> two hammer
> >> > trick, but never succeeded.  Guess my hammers were too small.
> >> Usually,> though, when I find myself reaching for a bigger hammer,
> >> I know I'm about to
> >> > witness a truly spectacular mistake :)
> >> >
> >> > -Shalyn
> >> >
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> 
> 
> 
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