[BGiraud]

What size wheels do you plan to use? At first look it seems like your wheels may hit your outer rails. If so, you will need to slide the dead axle mounts toward the center a bit. You can get an inventor wheel assy and add it to see how it fits. Also, I recommend dropping the center wheel 1/8-1/16. You can use chain tensioners like those on AndyMark's site. If you add sprockets to your wheels then you can also check your chain clearances. Make sure your sprocket size is such that you do not hit cross members. You should be able to cantilever your center wheel off of your direct drive axle, so no bearing in outer plate.