What constitutes a "securely mounted" seat pan in a FED?

[Paul New]

Oh yes understand that

[MikenMpls]

When I bought my car it basically had a piece of sheet metal that wrapped around the back and sides (one piece) and a piece of metal pop riveted to the lower tubes for a bottom. It put your butt so low in the car that I had to have a new seat made. We moved the rear end housing forward and down a bit to give me a better fit in the car. This made for a lot more work (motor plates etc) but being comfortable in the car is key to good lights , good driving and safety (or so they tell me). Do what you have to do to make it the best fit for you. Secure mounting is really a cross bar along the bottom leading edge of the seat and a tube or plate curved from that tube to the rear structure to follow the lower seat area. Great places to mount zeus buttons too.

[MikenMpls]

Pics of the original seat


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[MikenMpls]

New seat


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[tcoupekyle]

Right on

[tcoupekyle]

What kind of aluminum do ya'll use to build seats?  And bodies?

[dreracecar]

If any forming needs to done then 3003H14   for flat stuff with minimal forming the its 5052H32

 3003 forms well and you can aneal it back soft after it work hardens whereas 5052 does not aneal so simple forming with a brake or roll is all you can do, its really stiff and 30% harder to work then 3003, but you can get away with using .040

 Depending on welding skills .050 is 50% harder to weld than .063

[fuel749]

 Depending on welding skills .050 is 50% harder to weld than .063

Just so nobody takes this as gospel, it does say it depends on welding skills. The 50%  number is meaningless, depending on your skill level it could be 0 to 100% harder to weld than .063.