Originally Posted by MarkB (Post 72758)

You only need a few rivnuts to hold things on, but the floor wants to be riveted and bonded as this adds to the stiffness of the chassis. Panel all away across the bottom as you don't need to get to the prop underneath. There are better alternatives to rivnuts but they cost a lot more, check Merlin Motorsport for range of natty fixings. I have some somewhere that came from Jordan GP when my brother worked there and they are made from titanium, superb wee things and it's what they used to hold the nosecone on. The daft blue thing I built used them along with as many NAS bolts and K Nuts as I could(came courtesy of Jordan GP...:)..)

Originally Posted by HandyAndy (Post 72745)

What you can do is not "panel in" the underside where the tranny tunnel is, that makes the prop easy to get at from below,

or

fully panel in the whole bottom/underside & make the top of the tranny tunnel interior panel removeable ( this is how mine is ) as I thought getting into the prop would be easier from above rather than from below.

Also worth noting.....The IVA tester "may" want to see inside the tranny tunnel come test time.

cheers
andy