Re: [Paddlewise] Primex cart

> When dealing with rolling resistance, diameter matters more than
> width, especially in rough terrain and sand.

I can't figure out all the forces involved, though it looks like surface
area (3.14D*W) determines whether it would eventually roll or sink in sand.
You're right, diameter reduces rolling resistance (with given surface). Have
to think about either of those from Northern Tool - 12.5*2.25 (Keith is
using them)  or 10*3. Rolling resistance should be good enough with bearings
on any of these wheels (I can roll 8" wheels without bearings under
partially loaded kauak, when they don't sink in sand or gravel).  Hell knows
how well their bearings are sealed from sand. Wheels with large D, 12" or
more, are difficult to store in a kayak, even when they have less W - they
are not the heaviest thing in my gear, and I like storing them farther in
the bow or stern, and hull is narrow there.