Seats

[misty]

Hi all
Has anyone made the seats that are in the book in steel.
thinking of doing so but just dont know what thickness of steel sheet to use
any help would be great

[flyerncle]

Thats what it looks like cut from the pattern in the book.
Welcome to the cheap seats......

http://www.flickr.com/photos/30468413@N03/5111147179/.

Only thing to be aware of is position of the seat belt mountings and the holes through the seat for the belts and sharp edges.

If I go down the route of making a seat it will be ally but possibly thinish steel say 16g.

[misty]

many thanks for that i'm still looking for a pair in the meantime but if i cant get any that is suitable then i will make them
thanks agian

[alga]

I would suggest looking at the Rorty Design seats, they seem to be a bit more refined that the book ones. The drawing is available for free at the Rorty web site: http://www.rorty-design.com/files/Ro...%20Pattern.pdf

Rorty specifies 2.5 mm 5052 or 5251 ally, which should be equivalent to about 1.2 mm mild steel. Could any engineers confirm or correct?

Update: I found on the internets that substituting ally for steel sheet reduced the weight by a factor of 2, which means that the seats have to use 1.6 mm sheet and will weigh about 9 kg each. flyerncle, you were spot on!

[flyerncle]

I try my best Albert, Spikehaus has them in his and I think its in his blog.

[Ifix]

Hi,
I've been very quiet recently (and making very slow progress with the car) and although I'm still a long way off putting seats in I've being toying with the idea of making my own ones. I was just wondering how you guys got on with making yours if you did decide to go down that route, and if you had any tips.

Many thanks

Pete

[DavideM]

hi Alga,

with a "little delay"... just 10 years from your post... today i tested my 1.5mm mild steel rorty seat.
here is the picture:

https://drive.google.com/file/d/1JPz...ew?usp=sharing

i have to open shoulder's wings a bit, for me is too strict.
at the moment the general feeling is good about the position, not so good about the rigidity. but i still have to weld the doublers all around the perimeter. i will start adding 1 doubler outside, if still be too flexible i will add another inside. i think also the mounting plates need to be reinforced a bit, thinking about weld large inox washers around the holes..

at the end i will also "bomber-ize" the 50mm holes with a dimple die. this should give a little more rigidity.

anybody can post some pictures about upholstery"for idiots"? i found something in youtube but.. very complicated in one side/very different kind of seats in the other.

David

Originally Posted by alga

I would suggest looking at the Rorty Design seats, they seem to be a bit more refined that the book ones. The drawing is available for free at the Rorty web site: http://www.rorty-design.com/files/Ro...%20Pattern.pdf

Rorty specifies 2.5 mm 5052 or 5251 ally, which should be equivalent to about 1.2 mm mild steel. Could any engineers confirm or correct?

Update: I found on the internets that substituting ally for steel sheet reduced the weight by a factor of 2, which means that the seats have to use 1.6 mm sheet and will weigh about 9 kg each. flyerncle, you were spot on!