i've started another thread on this on ecomodder, but i didn't want to keep the gassavers out of this
this is a sort of prototype... if this shows some improvements i might build an aluminum version that's twise as long and that spans the full width of the car. i didn't want to get the coroplast to close to the exhaust and in front view the added area would be minimal
the bolts are secured to the tray with a standard nuts and than to the brackets with a wingnuts, if you undo all the wingnuts the whole things falls off without the risk of loosing a nut or any problems reattaching. the brackets are made from card slot covers from the back of a PC (source: garbage at work) wich are bend to shape and have a couple of holes drilled in
btw wingnuts are fairly expensive (5 nuts cost as much as 22 standard nuts and bolts from the same manufacturer)...still if i save 2L of gas with them i've got my money back!
the second picure also shows my custom wheel dam
BTW; i wanted to have dome shaped bolts but they had this square bit below the bead that was taller than the envisioned thickness of the whole tray so tha'd be a problem, so i got standard head screws (wich where also cheaper) i did however align the scew slots with the flow direction
might as well do things rightwhen you can
lunarhighway 
Threaded Mode
