| Pickup
or SUV? Each offers its own unique pros and
cons.
Hi Andy:
We have been towing a 27-foot Citation for the
last five years with a 1992 Ford F150. I would
like another F150 with the crew cab and five-foot
box, as I know how it operates. My better half
prefers the Expedition’s interior room
and trimmer size. Both have similar 5.4-liter
engines and I am sure power is not an issue,
but I am concerned about the shorter wheel base
on the Expedition affecting how it handles the
trailer and I wonder if the ride will be choppy.
The Citation has a slide-out room so it is pretty
tall and it does get affected somewhat by strong
winds.
Harold White
Both the Expedition and the new F150 are very
nice vehicles so this could be a difficult choice
to make. I have set up plenty of each with a
variety of trailers, so I have a pretty good
feel for both vehicles. As similar as they are,
there are some significant differences as well.
The Expedition has a much shorter wheel base
– 119 inches compared to 138.5 inches
on the F150 Super Crew, while the rear overhang
is the same on both at 49 inches to the bumper.
Both have a 67 inch track, and both are close
to the same height and center of gravity.
Ford
has been advertising lately how they placed
the shocks outside of the frame on the F150
which gives the shocks a 54 inch stance; the
springs are on a 44 inch stance. Not long ago,
moving the shocks out wider would have been
wasted on a pickup because any increase in suspension
control would have just resulted in more frame
flex, but the frame on these new trucks is noticeably
stiffer. It is still not like having a body
structure over it, but the improvement is substantial.
Having a box that is only 66 inches long also
helps reduce chassis flex.
The advantage the Expedition has is a very nicely
done, double wishbone independent rear suspension,
which projects the stance of both the shocks
and springs out to 67 inches. Of course the
Expedition has a very rigid body structure on
top of that so chassis flex is negligible, which
allows the suspension to do its job very well.
The other advantage of independent suspension
is far less unsprung weight. Unsprung weight
is the weight below the springs that has to
follow every bump in the road. On the pickup,
the entire axle has to move up and down where
as on the Expedition, only the brake rotors
and wheels do, and they move individually.
...
(Read Andy's full article in the magazine.)
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