woke nup this morning sun beaming through the window and thought "what a lovely day to get my chassis outside and do a bit of grinding on the welds. Last couple of hours ive been out grinding don all my welds on my chassis and still plenty more to do!

But whilst grinding i was doing some thinking about the floor. I think im going to do a steel floor. First off what thickness does everyone recomend?

Secondly reading a couple of previous posts i see people sometimes get the floor popping in and out (if you get me) because its flat and it got me thinking, how easy is it to but some bumps in the floor much like tin tops have for extra rigidty? Anyone tried this before?

Cheers

Personally I wouldn't- I'd fit an alloy floor.... I know the floor is low down so weight makes less difference to handling but the power:weight will still be dragged down...

im also thinking cost though. What about an ally floor, what sort of thickness would i need? Then would it be bonded and rivetted down?

steel 1mm ~ 1.6mm

I would still bond and rivett and not weld

Aluminium. 2mm. Bonded and Rivetted.

Steve

1.2mm steel.

weight of something like 2.5mm ali and lots more penetration resistance.

(probably incorrect figures, i did a spreadsheet about 4 years ago on it).

also, the weight is below the centre of gravity so whilst reduced straight line performance a fraction i'd argue it's not that bad on bends (but the car still isn't finished)

If I was doing it again, I would turn the chassis over, board up the underside of the floor and laminate GRP into the voids, very light and would strenghthen and protect.