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Dema
05-08-2006, 10:41 AM
Hi,
I'm planning for a new body frame for my actual project,
before beginning the make, I like ask if somebody have experienced on, and can suggest a metod or procedure to do it.
posted below is 1 picture of the (very) rusted original body frame :sad: and 1 full drawing of the frame 8)
The metal thickness is about 10 gauges.
Thanks for your help
Dema

ralph
05-08-2006, 11:04 AM
Dema,
Heres a link toProgressive Automotive (http://www.progressiveautomotive.com/default.htm)
Check out their chassis build area on the site, There is a pretty good explanation on how they build their chassis.

From their site:
our frame rails start as 1/8" flat steel. Side rails, boxing plates, top and bottom lips are plasma cut to shape and fully jig welded. Unlike a mandrel bent tube style rail, ours are assembled with the steel in a relaxed position, not forced into shape with the possibility of spring back. This takes longer to do than sticking a piece of box tube in a bender, but it's well worth it.

The top and bottom lips are then full length welded on the inside as well as the outside. The main reason why we take the additional time to do this is simple. Stronger rails that never crack at the weld seams.

Dema
05-08-2006, 12:31 PM
Dema,
Heres a link toProgressive Automotive (http://www.progressiveautomotive.com/default.htm)
Check out their chassis build area on the site, There is a pretty good explanation on how they build their chassis.

From their site:

Thanks Ralph,
great information on this site, I was unsure if making my chassis this way or build a form for the ends and forging its on the positive form (1 1/2" thick) and use it one time for the left and mirrored for the right, but I think I will do it the way explaned by Progressive Automotive link :roll:

Dema
02-05-2011, 11:48 AM
Hi,
here some pictures of the work in progress on the 1921 Fiat 5O1

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here is a device in order to be able to make the rivets as original

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7425

jlrussell4
02-05-2011, 02:49 PM
Dema,

You are coming along very nicely with your Fiat. Thanks for posting.

anders nørgaard
02-05-2011, 11:07 PM
Nice work Dema http://www.metalmeet.com/forum/images/icons/icon14.gif
Are you building a new frame from scratch?

Looks like the pics are misssing in post #1 of this thread. Any chance you can repost them? ;)

Carbuilder
02-06-2011, 10:25 AM
Dema do you have any other pictures of the frame rails being built I need to build a new frame for my 36 Roadster.

Dema
02-06-2011, 10:47 AM
Nice work Dema http://www.metalmeet.com/forum/images/icons/icon14.gif
Are you building a new frame from scratch?

Looks like the pics are misssing in post #1 of this thread. Any chance you can repost them? ;)

Hi Anders,
yes, I'm rebuilding the entire car from scratch.
here are some other pictures

7450

7451

7453

7454

7455

7456

anders nørgaard
02-06-2011, 10:51 AM
Holy cow... not much to go from Dema! :eek: Hats off for the job you're doing http://www.metalmeet.com/forum/images/icons/icon14.gif

anders nørgaard
02-06-2011, 10:53 AM
Dema do you have any other pictures of the frame rails being built I need to build a new frame for my 36 Roadster.

Danny,

Found a couple of links for you :cool: :)

http://www.progressiveautomotive.com/Chassis.htm (http://www.progressiveautomotive.com/Chassis.htm)
http://www.progressiveautomotive.com/online001.htm (http://www.progressiveautomotive.com/online001.htm)
http://www.rodandcustommagazine.com/projectbuild/4815_1936_ford_cabriolet_project_part_ii/index.html (http://www.rodandcustommagazine.com/projectbuild/4815_1936_ford_cabriolet_project_part_ii/index.html)
http://www.fatmanfab.com/35_40ford.php (http://www.fatmanfab.com/35_40ford.php)

Dema
02-06-2011, 11:02 AM
Dema do you have any other pictures of the frame rails being built I need to build a new frame for my 36 Roadster.

Hi, Danny
here some pictures of the frame rails being build.
the material thikness is 3mm
7457

7458

wehre possible I bent the rails profile

7459

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And all the other parts i build it with my homemade "ring roller"

7461

7462

Then TIG welded

7463

Dema
02-06-2011, 11:26 AM
This is my own restaured 1921 FIAT 5O1 torpedo,

7464

In the twenties a lot of coachbuilders design its own "race body" on an original FIAT factory frame and components,
(so I decided to design my own also)

7465

with the luck to have my original 5O1 Torpedo, I take the accurate measurements and reproduce the frame CAD drawings

7466

Dema
02-07-2011, 04:28 AM
I will look to post soon more pictures

Carbuilder
02-07-2011, 09:32 AM
Dema how did you bend the flange over on the center of the rail section & thank you for the pictures.

oldgoaly
02-07-2011, 09:56 AM
Dema,
Thanks for sharing your project! it's going to be a fun car to drive! tt

Dema
02-07-2011, 10:45 AM
Dema how did you bend the flange over on the center of the rail section & thank you for the pictures.

With a press brake,
I have no photos because...... I had to use both my hands :lol::evil:

Carbuilder
02-07-2011, 02:14 PM
Dema thanks again keep the pictures coming.

one armed hammer head
02-10-2011, 05:44 PM
I am sure that the cast iron looking pieces (front spring hanger attachment :confused:) at the front of the frame horns are original pieces, but do you know anyone who makes that type of piece outright either cast or machined out of steel?

I've noticed that same type of piece on frames in close up photos for early Indy type cars and guess that was an original usage in early frames. They also have a cross rod tying the two rails together as well - yet is able to be taken apart so that repairs could be made easier during or after a wreck in a race.

You're showing some stimulating ideas regarding fabrication of needed frames to replace non-existant or rust bucket originals. Keep the pictures and explanations coming!!
Jay Self

Dema
02-12-2011, 12:49 PM
I am sure that the cast iron looking pieces (front spring hanger attachment :confused:) at the front of the frame horns are original pieces, but do you know anyone who makes that type of piece outright either cast or machined out of steel?

I've noticed that same type of piece on frames in close up photos for early Indy type cars and guess that was an original usage in early frames. They also have a cross rod tying the two rails together as well - yet is able to be taken apart so that repairs could be made easier during or after a wreck in a race.

You're showing some stimulating ideas regarding fabrication of needed frames to replace non-existant or rust bucket originals. Keep the pictures and explanations coming!!
Jay Self

Hi Jay,

front spring hanger attachment at the front of the frame horns are the
original pieces, fortunately were not so bad corroded, so I could easily recover it

7558

7559

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However I think they are not cast but forged,
the same for the other attacks
7562

to save it I MIG reloaded where corroded
then I hammered them
7563

mercmad
05-15-2011, 12:30 AM
Would it have been better to do the rivet by hot setting?
http://www.bigflatsrivet.com/install.html