On 16-Mar-2005, "Tinkerntom" wrote:

You would want to locate the 2x6 directly on one of these,
otherwise it would just be the skin of the van supporting the load. The
skin on these newer vehicles is so thin, it will easily bend, and you
will end up with a van with a concave roof. Not good where it rains a
lot!


Since the 2x is about 60 inches long and about 1.5 inches wide, the
bearing area is about 90 sq. in. Two of these means the weight is
carried on 180 sq in. With two 90 lb WW canoes - that's only
1 psi average pressure. Not as big a deal as you might think.

Contrary to Michaels suggestion, I would still recommend that the
logitudinal runners of the existing stock rack, support the crossmember
whether 2x4 or 2x6. These longitudinal runners span from one body

Sorry for the confusion, but I didn't mean to not use the longitudinals.
Rather, don't use the crossbars. They are not strong or stiff.

I know folks who have attaches a 2x4 to the longitudinals running
the length of the vehicle and then 2x4s as crossbars - the whole
thing held in place by bolting to the existing roof rack. Much
stronger than a factory rack.

Mike