what mm ali to use?

layotn20 · #1 5th March 2010, 01:56 PM

what mm ali is acceptable for, floor/transmission tunnel/ and back seat part. 1.2mm or 2mm?
using the fiberglass pannels for the rest

Tilly819 · #2 5th March 2010, 02:41 PM

i think i used 1.6 for the floor and 0.9 every were elce

tilly

layotn20 · #3 5th March 2010, 02:45 PM

cheers mate

Tilly819 · #4 5th March 2010, 02:53 PM

also i think iv used 1/8th pop rivets on a 2 inch pitch

tilly

deezee · #5 5th March 2010, 03:49 PM

Remember that aluminium comes in many strengths and grades and you can get a 1.2mm sheet that is harder than a 2mm sheet

For rivet spacing, 10 times the rivet width is a reasonable rule of thumb.

layotn20 · #6 5th March 2010, 04:37 PM

Quote:

Originally Posted by deezee

Remember that aluminium comes in many strengths and grades and you can get a 1.2mm sheet that is harder than a 2mm sheet

For rivet spacing, 10 times the rivet width is a reasonable rule of thumb.

what grade and mm, would you recomend for floor and rear seat section? im just gona do it with the same alli saves buying different sheets?

deezee · #7 5th March 2010, 04:48 PM

I've used a 2mm 5251 H22 for the floor (210MPa Tensile Strength). I then used 1mm 1050 H14 (Half Hard) for the tunnel, behind seats, sides (100MPa Tensile Strength).

If your bolting your seats into the floor (as per the book) You want a beefy grade of metal, plus your going to stand on it. I think the book actually recommends using 2mm aluminium for the floor. 1mm to 1.2mm for other panels. If you want to enter you car into the 750mc race series, it needs a steel floor.

layotn20 · #8 5th March 2010, 08:09 PM

when sheeting your floor etc do you have to cover the transmission tunnel from the underside or can you leave it open. also i take it you use ali rivets?

Bonzo · #9 5th March 2010, 08:25 PM

Some folk cover the floor & tunnel, others have just done the floor.

I used 2mm alloy for the floor ( Left tunnel open ) & have bought 1.2mm for all of the rest ..... Rear panel done, went round the corners a treat

Side panels & interior next

I bought a full sheet of 2mm .... Had enough left from that to make my fuel tank

Yes alloy rivets, the sealed type if possible .

Went beserk with my rivets ..... Every 25mm

.... One thing for sure, the floor don't bend when I stand my 14 stone on it !!

layotn20 · #10 5th March 2010, 08:40 PM