well the last two years we have used wood, and last year the wood flexed giving us chain tension and sprocket alignment problems (in collisions the wood would flex and we would loose the chain
)
one of our members was thinking to use aluminum angle to strenghten the frame, and i though an entire metal frame would be cool (partly inspired by swampthing, that thing is cool, if you haven't seen it,
http://www.chiefdelphi.com/forums/sh...ght=swampthing)