Guys:
I think the chief benefit of using the jack stands vs.
a hydraulic jack is not the "slippage" (on car) factor
but rather the "internal" security of the stands.
A hydraulic jack is obviously based on a hydraulic
system. It is the hydraulics which may fail (piston,
etc) -- never fully trust a hydraulic system with your
life. The stands "latch & hook-arm" is much more
secure.
--Rick
--- Joe Curry <spitlist@gte.net> wrote:
>
> Dean,
> I see your point. And I agree that on solid axle
> cars, the Axle is a
> good place to put the stands.
>
> On the Spit, with the stands I use (and most I have
> seen) the tops are
> wide enough that they actually curve around the
> edges of the frame
> members. So slippage is not really a problem.
>
> Regards,
> Joe
>
> Dean Dashwood wrote:
> >
> > Fair point, Joe - I was talking from experience of
> other cars, I've
> > never (yet!) had to use the stands on the Spit.
> But now I think about
> > it, I can see that this probably wouldn't be such
> a good idea on the
> > Spit's rear axles.
> >
> > If they have curved top surfaces, designed for
> resting axles in, though,
> > I would think that resting the frame on top of
> them, with a very small
> > contact area, wouldn't be quite as stable?
> >
> > An attempt at a diagram (view in Arial font for
> least-bad results) :
> >
> > Resting an axle in an axle stand:
> >
> > axle
> > |
> > v
> > \ O / <- axle stand
> > -----
> > |
> > |
> > |
> >
> > Resting the frame on an axle stand:
> >
> > frame
> > |
> > v
> > ________
> > \ / <- axle stand
> > -----
> > |
> > |
> > |
> >
> > Ok, so those pictures are *really* bad, but I
> think you can just about
> > see that an axle is fairly stable inside an axle
> stand, whereas the
> > frame can slide about on it, not really giving you
> much better
> > protection than using a jack.
> >
> > Have I just completely invented a problem that
> doesn't exist, or is
> > there a standard way round this (although I'm
> hoping that I won't need
> > to worry about it for a little while longer
> anyway.....) ???
> >
> > >----------
> > >From: Joe Curry[SMTP:spitlist@gte.net]
> > >Sent: 12 July 1999 14:15
> > >To: Dean Dashwood
> > >Cc: 'spitfires@autox.team.net'; 'todd j. derr'
> > >Subject: Re: new spitter...
> > >
> > >Dean,
> > >I don't think it wise to be putting stands under
> Spitfire swing-axles.
> > >The axles are strong enough, but why risk damage
> to them, the U-Joints
> > >or the bearings by putting the weight of the Spit
> on them at a single
> > >point. I'd recommend using the frame.
> > >
> > >Joe
> > >
> > >Dean Dashwood wrote:
> > >>
> > >> Hi Todd, welcome to the list!
> > >>
> > >> You need to remove the cover to get to the
> switch - the Haynes manual
> > >> section on removing the gearbox describes how
> to do it, but it's not
> > >> difficult.
> > >>
> > >> As for the jackstands (are these the things
> that I'd call "axle
> > >> stands"?) I'd suggest under the axle for
> everything except removing
> > >> axles. Insert all the standard disclaimers
> here about never working
> > >> under a car that's only supported by a jack,
> add extra support by
> > >> putting any wheels you've removed underneath
> the car whilst working,
> > >> etc, etc. But you won't need to do this for
> the reverse light problems
> > >> - that's completely an "inside the car" job.
> > >>
> > >> Good luck!
> > >>
> > >> Dean Dashwood
> > >> '77 Spit 1500 (back from the garage with an MOT
> in 5 days - and
> > >> counting!)
> > >>
> > >> >----------
> > >> >From: todd j. derr[SMTP:tjd@wordsmith.org]
> > >> >Sent: 12 July 1999 04:15
> > >> >To: spitfires@autox.team.net
> > >> >Subject: new spitter...
> > >> >
> > >> >
> > >> >Hello,
> > >> >
> > >> > I've been reading this list since
> shortly after I bought my new
> > >>friend,
> > >> >a 1978 (or is that 79? commision #FM91578U)
> Spitfire, about a month ago,
> > >>but
> > >> >this is my first post... so, hello to everyone
> out there.
> > >> >
> > >> > So far it's been fairly smooth sailing,
> but now I need to pass
> > >>state
> > >> >inspection, which isn't going to happen unless
> I can fix the reverse
> > >>lights.
> > >> >Currently they're stuck on - or at least
> _were_ stuck on before I removed
> > >>the
> > >> >bulbs; my thinking being I'm a lot more likely
> to get pulled over with the
> > >> >stuck on than off...
> > >> >
> > >> > Anyways, I have obtained the Haynes
> manual, which shows the
> > >>location
> > >> >of the reverse switch on the tranny, but I
> can't find anything about how
> > >>to
> > >> >access it. So, does anyone know, can I reach
> it from under the car or do
> > >>I
> > >> >need to remove the cover inside the passenger
> compartment to get it from
> > >> >above?
> > >> >
> > >> > Also, this may be a silly question but
> I'd rather be silly than
> > >>dead -
> > >> >I bought a pair of jackstands and have no idea
> how to use them. Should I
> > >>put
> > >> >them under the frame? Under the lower
> wishbones in front? Under the axle
> > >>in
> > >> >the rear? Or should I jack up the car using
> the frame and put the
> > >>jackstands
> > >> >under the normal jacking points?
> > >> >
> > >> >thanks in advance for any help,
> > >> >
> > >> >todd.
> > >> >
> > >> >PS: I _love_ driving this car!
> > >> >
> > >
> > >--
> > >"If you can't excel with talent, triumph with
> effort."
> > > -- Dave Weinbaum in National Enquirer
> > >
> > >
> > >
>
> --
> "If you can't excel with talent, triumph with
> effort."
> -- Dave Weinbaum in National Enquirer
>
===
Spitfire page at http://www.apiinc.com/rick/spitrec.html
|