Shock mount failure

[timvasqz]

if there are four gussets and two are inline with the shock the side
two do nothing. In that case the top gusset that sees compression
transfer more force on the bottom gussett that feels tension.

if they place two gussets one each on 22 degrees of the center line
from the shock across the bottom and two at 22degrees off center line
at the top, the force of the shock(action) will be shared equally by
each gusset reducing the stress at the end of either weld.


I have loader arm gussets that have a crease in them that allow the
gussett to flex some. that takes advantage of metals ability to
absord some and not crack.
the mods that have been done strengthen the post which isnt failing.
the plate fails. the point where plate first fails is the part that
allows the metal to peelup. welding the plate to the frame at the top
has no advantage either.
Greg ofTim&Greg
94ptca

--- In WanderlodgeForum@yahoogroups.com, david brady
wrote:
>
> One thing to keep in mind is that these shocks don't
> act vertically. My shocks are canted over to almost
> 45 degrees, give or take (probably take a bit, I haven't
> measured the angle). That's part of the problem. The
> mount has an almost 2:1 mechanical lever disadvantage.
>
> On the LXi, along the axis of the shock, which is how the
> forces are acting, there's a gusset in line with the shock.
> call it 10:00, then there's the 2:00 and 6:00 gussets with
> the bottom of the shock pointing at 4:00. I'll see if I can
> dig out a pic.
>
> If you look at the WB version, you'll see that there
> isn't a gusset in line with the shock opposing the rebound
> forces. The WB gussets are at 12:00, 4:00 and 8:00.
> With the shock acting on 10:00. Pete's pic in particular
> shows how that weld bead flowing between the 12 and
> 8:00 gusset broke, right where the forces are the strongest.
> I believe it broke first at this weld bead and then ripped
> the rest of the metal off to the direction of the brake line.
>
> Check for cracks at that weld bead. Wire brush the paint
> off, then repaint.
>
> Now that it's 12:00 I think I'll go to bed...
>
> David
> '02 LXi, NC
>
>
> timvasqz wrote:
> >
> > when I weld in a triangle gussett, I first cut out the right
angle or
> > just dont weld to the point. On the redesign David has I would
think
> > the gussets are not top and bottom in line with the shock????
> > Gussetts off to the side of the line of the force would allow for
> > some distortion in place of total metal failure.
> >
> > When you beef one thing up the next weak link becomes evident.
first
> > thing I do when I crack an arm on a bobcat is realize the proven
> > limit then weld it back to spec. I just think the problem is not
in
> > the ride dynamic.
> >
> > "You can jack a bus up.... by jacking a bus up"
> > Greg of Tim&Greg
> > 94ptca
> >
> >
>