Sorry I'm late to this discussion.
The Files section of this site has a doc I wrote on changing motors (Replacing 4x6 bandsaw motors v3.pdf).? At the back of the doc is a section addressing stability issues from putting on heavier motors with?photos of the setup.? Basically using steel strap bolted to the sheet metal legs.? The wheels are spaced wider and are further back, with the weight taken by the wheels. Though not sold as resistant to flat-spotting like Guy Lautard's one, they've never developed any flats.?
Although its cheap, the saw is heavier to move (due to wheels further back) and awkward (by comparison with cart mounted ones like Dave Sieter's). I wouldn't do it that way again.
I've got a 2-drawer filing cabinet, that I'm going to castor-mount on an angle iron frame.? That will give me a flat surface to mount a tray under the whole saw to catch coolant and swarf. Will be a bit wider and higher than std, but much more stable and have storage for blades and fixtures underneath and be easy to move - jv
